9 products
Sort by:
9 products
9 products
What is IO Genix Glutamine Kyowa?
IO Genix Glutamine Kyowa is an L-glutamine powder dosed at 5 g per scoop, to which 1.4 mg of vitamin B6 is added. It comes in 300 g and 500 g, in an unflavoured or raspberry version.
Glutamine is the most abundant amino acid in muscle and in plasma. The body makes it itself, which makes it a non-essential amino acid in the strict sense, but the rate at which it is used up rises during periods of sustained training, calorie restriction or physiological stress. That is where the question of an additional intake arises.
The Kyowa Quality mention refers to the raw material, produced by Japan's Kyowa Hakko from a plant-based fermentation. It is an indication of origin and process, not a particular biological property: the molecule obtained is the same as that of any other glutamine. What the label guarantees is traceability and process control, which is no small thing on an amino acid produced in very large volumes. The rest of the range appears in our IO Genix aisle.
What is in a 5 g serving?
| Values | Per 5 g serving | Per 100 g | % NRV |
|---|---|---|---|
| Energy | 20 kcal | 400 kcal | — |
| Protein (L-glutamine) | 5 g | 100 g | — |
| Carbohydrate | 0 g | 0 g | — |
| Fat | 0 g | 0 g | — |
| Sodium | less than 1 mg | less than 20 mg | — |
| L-glutamine Kyowa Quality | 5,000 mg | 100 g | Not established |
| Vitamin B6 (pyridoxine hydrochloride) | 1.4 mg | 28 mg | 100% |
The per-100 g values are calculated from the manufacturer's declaration for a 5 g serving. One inconsistency deserves to be flagged rather than glossed over: the data sheet states 0 g of carbohydrate while the ingredients list mentions maltodextrin, which is one. The amount is in all likelihood small, but we do not know it and will not reconstruct it. The label on the tub you receive is the authority.
5 g per serving is the reference amount, and it is the one used in most of the published work on glutamine. Few products go below it, but many sell 3 g scoops that then have to be doubled, which completely changes the real cost per serving. Always check the weight of the scoop before comparing two tubs.
The number of servings depends on the size, and there is a clarification to make here too. The manufacturer states 100 servings per container, which corresponds to the 500 g size. The 300 g size contains 60, at 5 g per serving. The larger size therefore works out cheaper per serving, but is only worth it if you keep it up.
Vitamin B6 at 1.4 mg covers the European reference value exactly. It is not there by chance: it contributes to normal protein and glycogen metabolism, to normal energy-yielding metabolism and to the reduction of tiredness and fatigue. It is the only ingredient in this tub to carry authorised claims. If it is this vitamin that interests you in its own right, our vitamin B aisle offers it dosed separately.
A regulatory clarification belongs here: L-glutamine has no authorised health claim in Europe. Not on recovery, not on immunity, not on the gut lining. The former description on this page claimed that supplementation sped up recovery and maintained immune function: that wording was not compliant and has been removed.
Ingredients list
L-glutamine (Kyowa Quality), maltodextrin, acidity regulator (citric acid), flavouring, sweeteners (sucralose and acesulfame K) and vitamin B6 (pyridoxine hydrochloride). The unflavoured version contains neither flavouring nor sweetener. May contain traces of GLUTEN, EGGS, FISH, SOYA and MILK.
How do you take Glutamine Kyowa?
Serving: one level scoop, or 5 g. Liquid: 300 ml of water or fruit juice. Timing: straight after training, or before bed on rest days. Frequency: one serving per training day; the manufacturer describes a more intensive protocol of three servings spread across non-training days. Duration: no set course length, use is ongoing.
One serving a day covers what the vast majority of trainees need. The three-serving protocol is aimed at high training volumes, and you should be clear about what it represents: 15 g of free amino acid a day, every day. If you are starting out, begin with one serving and see.
The powder dissolves well but stays slightly tart on the palate in the raspberry version. Fruit juice masks that tartness better than water does, with no downside. The unflavoured version, for its part, mixes into anything — into a protein shake, into porridge, into a fruit purée — and it is often the more practical choice for everyday use.
Avoid mixing it into a hot drink: glutamine is not very stable in solution when heated. A shake made up in the morning for the afternoon is no problem; a cup of boiling tea is.
Who is Glutamine Kyowa for, and who is it not for?
It suits someone on a high training volume, someone in a prolonged calorie deficit, or someone stringing sessions together without a genuine rest day. Those are the situations in which the body's use of glutamine rises the most.
The manufacturer does not recommend it for pregnant and breastfeeding women and restricts it to adults over 18. It also asks that you seek the advice of a healthcare professional in cases of liver or kidney disorders, or if you are on medication: that is a sensible precaution, since amino acid metabolism runs through the liver and the kidneys.
It is not for you if your daily protein intake is already high. This is the least commercial truth on this page: a 30 g whey isolate shake already supplies roughly 1.5 to 2 g of glutamine, and a diet providing 150 g of protein a day supplies several grams. In that context, the additional intake is marginal, and the literature on the benefits of supplementation in a well-fed athlete is far from convincing.
What you should not expect from it: this is not a product that drives progress. It does not build muscle, it does not replace a protein, and you will feel nothing when you take it. It is a comfort supplement, to consider once the rest is already in place, not before. If you have any medical doubt, ask your doctor or your pharmacist.
Glutamine or EAAs after training?
Both are taken at the same moment and compete for the same budget, so we may as well put the question plainly.
An EAA supplies all nine essential amino acids, including the leucine that triggers protein synthesis. In terms of building muscle, there is no comparison: it is the better choice if you train fasted, if your protein intake is low, or if you want a single product after the session. It costs more per serving, and it has a stronger taste.
Glutamine does not play in that category. Its value lies elsewhere: it is a non-essential amino acid, heavily used during periods of heavy load, and its use has more to do with recovery comfort than with performance. It is the better choice if your diet already comfortably covers your protein needs and you are looking to top up on one specific point, or if you cope badly with complex formulas.
If your budget allows only one product, buy the protein or the essential amino acids before the glutamine. That is the logical order, and we say so over the counter just as we do here.
Frequently asked questions
How many servings are in a tub?
Sixty for the 300 g size, one hundred for the 500 g size, at 5 g per serving. The manufacturer quotes the figure of 100 servings without specifying which size it refers to: it corresponds to the 500 g. The larger size works out cheaper per serving if you keep it up.
What is the difference between the unflavoured and raspberry versions?
The active ingredient make-up is identical. The raspberry version additionally contains a flavouring, an acidity regulator and sweeteners; the unflavoured version contains none. The unflavoured one mixes into anything without disturbing the taste, the raspberry one is more pleasant drunk on its own. That is the only deciding factor.
When should you take it?
Straight after training on session days, before bed on rest days. Timing matters less than consistency: glutamine acts on a body pool that rebuilds slowly, not on a one-off peak. One serving a day at a set time is worth more than three irregular ones.
Should you take it if you already use whey?
The benefit becomes slight. A 30 g whey serving already supplies a far from negligible share of glutamine, and a protein-rich diet supplies several grams a day. Supplementation still makes sense during a period of unusual load or a marked calorie deficit, less so in an ordinary situation.
Can it be mixed into a hot drink?
Better to avoid it. Glutamine is not very stable in solution at high temperature and partly degrades. Mixing it into cold or lukewarm water, or into a juice, poses no problem at all, including when made up a few hours in advance.
Is glutamine suitable for vegans?
The Kyowa Quality raw material is obtained by fermentation of plant origin, with no animal input, as the manufacturer states. The point to watch is the declared manufacturing traces — gluten, eggs, fish, soya and milk — which come from the production environment and not from the formula.
Why is there vitamin B6 in a glutamine?
Because B6 is involved in amino acid metabolism, and because it is the only ingredient in this tub for which a claim is authorised in Europe. At 1.4 mg, it covers the daily reference value exactly. If you already take a multivitamin, be aware that stacking the two carries no risk at this level.
Where can you buy IO Genix Glutamine Kyowa?
The sizes and versions can be ordered from this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, this is a product we deliberately place at the end of our advice: when someone comes in looking for glutamine and is not yet hitting their protein quota, we show them the other aisle first. The rest of the range can be browsed in our sports nutrition aisle.
What is Sinob Core L-Glutamine?
Sinob Core L-Glutamine is a pure L-glutamine powder produced by plant-based fermentation. A 10 g serving delivers 10 g of L-glutamine in free amino acid form, for 30 kcal. There is nothing else in the tub: no flavouring, no sweetener, no colouring, no bulking agent.
Glutamine is the most abundant amino acid in blood plasma and in muscle tissue. The body can manufacture it, which places it among the non-essential amino acids, and an ordinary diet already supplies appreciable amounts: dairy products, meat, fish, eggs and pulses all contain it.
The term “free” form means that the amino acid is not bound to any other: it is ready to be absorbed as it is, which explains why it dissolves instantly in water. The rest of the German range can be browsed in our Sinob section, and the other products in the category in our glutamine section.
What does a serving of Core L-Glutamine contain?
| Composition | Per 100 g | Per 10 g serving |
|---|---|---|
| Energy | 300 kcal / 1,255 kJ | 30 kcal |
| Protein | 100 g | 10 g |
| L-glutamine | 100 g | 10 g |
| Salt | 0 g | 0 g |
| Form | Free amino acid, from plant-based fermentation | |
Inconsistent figure in the manufacturer's file: the carbohydrate, fat and fibre lines are all declared at 1 g per 100 g on a powder stated to be 100 % pure. These values cannot all be correct at once; we would rather not reproduce them than publish figures that do not add up. The official table appears on the packaging as supplied.
Let us come to what really matters, and to what is written nowhere else in this category: no health claim is authorised in Europe for glutamine. Not for recovery, not for immunity, not for muscle mass, not for digestion. The dossiers submitted did not succeed. So we describe an amino acid, its dosage and how to use it, without promising any result.
We need to go further, because that is our job as a retailer. In a healthy athlete who eats enough protein, the available research shows no notable effect of glutamine supplementation on muscle mass or performance. An adequate protein intake already supplies glutamine in quantity — a whey provides several grams per serving without it having to be stated on the label. The uses where glutamine has a documented benefit belong to the clinical field, under medical supervision, and not to sports nutrition.
What does remain true: this is a pure powder, dosable to the gram, additive-free, reasonably priced and perfectly well tolerated by most people. If you want to try it knowing exactly what it is, it is a clean product. If you are looking for the supplement that will make the difference to your results, look elsewhere in the range — and we will tell you where.
Data missing from the manufacturer's file: the net weight of the tub, and therefore the number of servings, are not disclosed. The net content appears on the packaging.
Ingredient list
L-glutamine (100 %), free amino acid from plant-based fermentation. No colourings, no preservatives, no sweeteners, no bulking agents.
No allergen declared in the composition by the manufacturer. Product declared gluten-free, lactose-free and soya-free, suitable for vegan and halal diets.
How should you take Core L-Glutamine?
Serving: 10 g, i.e. one scoop; 15 g for intensive use, split into 5 g before and 10 g after the session. Liquid: 200 to 300 ml of cold or lukewarm water. Timing: within the fifteen minutes following training, between two meals, or before bed. Frequency: one to two servings per day. Duration: cycles of 4 to 6 weeks, with a one- to two-week break.
Solubility is this powder's practical strong point. Free L-glutamine dissolves instantly in cold water, with no lumps and no sediment, which is not the case with every amino acid. Shake for five seconds and drink: it has no pronounced taste, barely a slight bitterness. It therefore mixes without difficulty into a protein shake, a juice or a training drink.
The manufacturer recommends taking it away from meals to aid absorption, as glutamine shares its intestinal transporters with other amino acids. In practice, taking it straight after the session or between two meals meets that condition effortlessly.
If you have a sensitive stomach, start at 5 g per serving before moving up to 10 g. That is the manufacturer's advice, and it is justified: free amino acids at high doses sometimes cause temporary digestive discomfort in the first few days. Do not exceed the stated amounts in the belief that more is better, as it would achieve nothing.
It combines without redundancy with a protein, with EAAs or with creatine monohydrate. Simply note that a whey already supplies you with glutamine, which makes the addition less decisive than is often claimed.
Who is Core L-Glutamine for, and who is it not for?
It suits an adult who wants a pure, additive-free powder and who knows the limits of the product. The format is perfectly clean: a single ingredient, precisely dosable, suitable for vegan diets.
The manufacturer recommends medical advice in the event of liver or kidney disease. This is not a token precaution: both organs are directly involved in amino acid metabolism, and the question cannot be settled over the counter. The manufacturer also flags possible drug interactions: if you are on any medication, discuss it with your doctor or pharmacist.
It is not recommended for pregnant or breastfeeding women without the advice of a healthcare professional.
What you should not expect from it, and we say so bluntly because it is the most useful information on this page. It does not build muscle. It does not speed up recovery in any demonstrated way in a healthy athlete. It does not boost immunity — no claim of that kind is authorised. If your daily protein intake is adequate, you are already consuming glutamine in quantity without knowing it. This product makes up for neither poorly designed training, nor insufficient sleep, nor a diet that is too sparse.
Glutamine or protein powder?
This is the honest comparison to make before buying, and it comes down fairly clearly in favour of the latter.
A serving of whey supplies 20 to 25 g of complete protein, including several grams of naturally occurring glutamine, plus the full set of essential amino acids the body cannot manufacture. And protein does have authorised claims: protein contributes to a growth in and the maintenance of muscle mass. On cost per serving, there is no comparison. Our whey isolate section is the first place to look if your goal is muscle mass.
Isolated glutamine does something else: it supplies a single amino acid, in large amounts, without the others. That is useful when you are specifically after this molecule, for a use documented elsewhere or on the advice of a healthcare professional.
When is glutamine the better choice? When you know why you are taking it and are not counting on it to progress in training. If your aim is to cover your amino acid needs around the session, BCAAs and above all EAAs make more sense, and a complete protein makes more sense still.
Frequently asked questions
How much glutamine per serving?
10 g of pure L-glutamine per scoop, for 30 kcal. The powder analyses at 100 g of protein per 100 g: there is nothing else in it. For intensive use, the manufacturer provides for 15 g split into 5 g before and 10 g after the session.
Does glutamine really help you recover?
No recovery claim is authorised in Europe for glutamine, and in a healthy athlete who eats enough protein, the available research shows no notable effect. It is a clean product, but we will not promise you what has not been demonstrated.
When should you take it?
The manufacturer settles on the fifteen minutes following training, or a serving between two meals, or else before bed. The common thinking is to take it away from a meal, as glutamine shares its intestinal transporters with other amino acids.
What does this powder taste like?
Almost nothing, barely a slight bitterness. It is neither flavoured nor sweetened. It dissolves instantly in cold water, with no lumps or sediment, which makes it easy to add to a protein shake or a juice.
Does a whey already contain some?
Yes, several grams per serving, without this always appearing on the label. It is a point few retailers mention: if you already take a protein powder every day, your glutamine intake is far from nil.
What should you do about digestive discomfort?
Drop to 5 g per serving, as the manufacturer provides for, and build back up gradually. The discomfort mainly concerns the first few days and high doses of free amino acids. Taking the powder with a little more water also helps.
Is this powder suitable for vegans?
Yes. The L-glutamine is obtained by plant-based fermentation, with no raw material of animal origin, and the manufacturer declares the product vegan, halal, gluten-free, lactose-free and soya-free.
Where can you buy Sinob Core L-Glutamine?
The tub can be ordered from this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, it is a product we are happy to sell but rarely recommend first: when a customer comes in looking for glutamine to make progress, we start by looking at what they eat and what protein they already take. Nine times out of ten, the answer is there. The rest of the range can be browsed in our sports nutrition selection.
Qu'est-ce que la Glutamine pomme verte d'OstroVit ?
C'est de la L-glutamine en poudre aromatisée, dosée à 4 500 mg dans la mesurette de 5 g. Le sachet de 500 g donne 100 portions.
C'est la version de celui qui boit sa glutamine à l'eau plate et veut que ça passe tout seul. Le reste de la gamme se parcourt dans le rayon OstroVit.
Ce qu'il y a dans la Glutamine pomme verte
Un chiffre porte la fiche : 4 500 mg de L-glutamine par portion de 5 g, soit quatre grammes et demi d'acide aminé dans un verre d'eau. Et un second qui compte autant : zéro sucre ajouté, le goût venant d'un arôme et de deux édulcorants, le sucralose et l'acésulfame K.
Le reste de l'étiquette tient en deux lignes : un régulateur d'acidité, l'acide citrique, et c'est tout. Pas d'agent de charge, pas de colorant.
La glutamine est l'acide aminé le plus abondant du plasma et du muscle. Elle transporte l'azote d'un tissu à l'autre, nourrit les cellules à renouvellement rapide et entre dans la fabrication du glutathion. L'organisme la synthétise lui-même, ce qui la classe parmi les acides aminés non essentiels, mais le réservoir musculaire baisse quand la charge monte.
Produit végétalien. La poudre se dilue dans 100 à 150 ml d'eau ou de jus.
À qui s'adresse la Glutamine pomme verte ?
À celui qui s'entraîne régulièrement et préfère une boisson qui a du goût à une poudre neutre à faire passer. Sur un acide aminé que l'on prend plusieurs fois par semaine, le goût décide souvent de la régularité.
C'est aussi le choix de qui surveille les sucres : l'arôme est porté par des édulcorants, et le sachet n'apporte pas de sucre ajouté.
Enfin, le format 500 g est le bon compromis pour une première cure : assez pour tenir la distance, pas assez pour encombrer le placard.
Quel parfum choisir ?
Cette référence est la pomme verte : acide, franche, du côté des boissons désaltérantes plutôt que des sirops sucrés. C'est le parfum qui passe le mieux à l'eau froide, après la séance.
La gamme propose aussi le citron, l'orange et la version non aromatisée, utile si vous mélangez la glutamine à un shaker de protéine déjà aromatisé.
Questions fréquentes
La glutamine, qu'est-ce que c'est ?
C'est l'acide aminé le plus abondant du plasma sanguin et du muscle. L'organisme sait le fabriquer, ce qui le place parmi les acides aminés non essentiels.
Pourquoi prendre de la glutamine ?
Parce que le muscle en est le premier réservoir et que ce réservoir se vide quand les séances s'enchaînent. La poudre est la façon la plus simple d'ajouter plusieurs grammes de glutamine à la journée.
Quels sont les bienfaits de la L-glutamine ?
Son rôle physiologique est bien établi : transport de l'azote entre les tissus, carburant des cellules à renouvellement rapide, précurseur du glutathion. Rien là-dedans ne remplace l'entraînement ni l'apport protéique de base.
Glutamine et intestin : quel rapport ?
C'est une question qui revient souvent, et elle a une explication simple : les cellules de l'intestin grêle utilisent la glutamine comme substrat énergétique de premier choix. C'est un fait de physiologie, pas une promesse écrite sur le sachet.
Où trouver la glutamine dans les aliments ?
Dans tout ce qui est riche en protéines : viande, poisson, œufs, produits laitiers, légumineuses, et à moindre dose dans le chou, les épinards et les céréales complètes.
Quelle différence entre glutamine et L-glutamine ?
Aucune en pratique. La glutamine de l'alimentation et des compléments est la forme L, la seule que l'organisme utilise. Les deux noms désignent le même ingrédient.
Où trouver de la glutamine en pharmacie ?
La glutamine se trouve en pharmacie comme en magasin de nutrition sportive. Ce sachet de 500 g est en rayon à Vendargues et s'expédie partout en France.
Où acheter la Glutamine pomme verte d'OstroVit ?
Le sachet de 500 g se commande depuis cette page et nous expédions partout en France et en Europe. Notre magasin se trouve à Vendargues, à une dizaine de minutes de Montpellier, et la Glutamine y est en rayon.
Le reste de la marque se parcourt dans la collection OstroVit.
Qu'est-ce que la Glutamine micronisée d'OstroVit ?
C'est de la L-glutamine en poudre, et rien d'autre : la liste des ingrédients tient en un mot. Le sachet de 1 kg donne 200 portions de 5 g.
C'est le format de celui qui consomme régulièrement cet acide aminé et ne veut pas racheter un pot tous les mois. Le reste de la gamme se parcourt dans le rayon OstroVit.
Ce qu'il y a dans la Glutamine micronisée
Deux chiffres suffisent. 5 000 mg de L-glutamine dans la mesurette de 5 g, et un seul ingrédient sur l'étiquette. Pas d'arôme, pas d'édulcorant, pas d'antiagglomérant, pas d'acidifiant.
Le fabricant pousse même le tableau jusqu'à une colonne double : 10 000 mg de L-glutamine pour deux mesurettes, soit dix grammes nets d'acide aminé.
La glutamine est l'acide aminé le plus abondant du plasma et du muscle. Elle transporte l'azote d'un tissu à l'autre, sert de substrat énergétique aux cellules à renouvellement rapide et entre dans la fabrication du glutathion. L'organisme la synthétise lui-même, ce qui la classe parmi les acides aminés non essentiels, mais le réservoir musculaire baisse quand la charge d'entraînement monte.
La poudre est non aromatisée et se dilue dans 100 à 150 ml d'eau ou de jus. Produit végétalien.
À qui s'adresse la Glutamine micronisée ?
À celui qui s'entraîne souvent et veut un acide aminé isolé, sans goût à subir ni sucre à compter. Une poudre neutre se mélange dans ce qu'on veut : eau, jus, shaker de protéine, bol de flocons.
C'est aussi le choix de qui surveille la composition. Un ingrédient, un dosage, un prix au gramme : il reste peu de place pour l'approximation.
Et c'est le format économique de la gamme. À 200 portions le sachet, le coût par portion tombe nettement sous celui des conditionnements plus petits.
Questions fréquentes
Qu'est-ce que la glutamine ?
C'est l'acide aminé le plus abondant du plasma sanguin et du muscle. L'organisme sait la fabriquer lui-même : on la classe donc parmi les acides aminés non essentiels.
Quels sont les bienfaits de la L-glutamine ?
Son rôle physiologique est bien décrit : elle sert de transporteur d'azote entre les tissus, de carburant aux cellules à renouvellement rapide et de précurseur du glutathion. Rien de tout cela ne remplace l'entraînement ni l'apport protéique de base.
Pourquoi prendre de la glutamine en musculation ?
Parce que c'est l'acide aminé dont le muscle est le plus gros réservoir, et que ce réservoir se vide quand les séances s'enchaînent. L'apport en poudre est la manière la plus simple d'ajouter dix grammes de glutamine à la journée.
Quelle différence entre glutamine et L-glutamine ?
Aucune en pratique. La glutamine utilisée dans l'alimentation et dans les compléments est la forme L, la seule que l'organisme emploie. Les deux appellations désignent le même ingrédient.
Où trouver la glutamine dans les aliments ?
Dans tout ce qui est riche en protéines : viande, poisson, œufs, produits laitiers, légumineuses, et à moindre dose dans le chou, les épinards et les céréales complètes.
Est-ce que la glutamine est bonne pour la santé ?
C'est un acide aminé présent naturellement dans le corps et dans l'alimentation courante, pas une molécule exotique. L'étiquette de ce sachet n'annonce rien d'autre que ce qu'elle contient : de la L-glutamine, et elle seule.
Où trouver de la glutamine en pharmacie ?
La glutamine se trouve en pharmacie comme en magasin de nutrition sportive. Ce sachet de 1 kg est en rayon à Vendargues et s'expédie partout en France.
Où acheter la Glutamine micronisée d'OstroVit ?
Le sachet de 1 kg se commande depuis cette page et nous expédions partout en France et en Europe. Notre magasin se trouve à Vendargues, à une dizaine de minutes de Montpellier, et la Glutamine y est en rayon.
Le reste de la marque se parcourt dans la collection OstroVit.
La Now Foods L-Glutamine 1000 mg apporte 1 g de L-glutamine sous forme libre par gélule végétale. Grand flacon de 240 gélules : c'est le format le moins cher au gramme de glutamine du catalogue.
Composition
Forme libre, et non sel : le gramme déclaré est un gramme de glutamine. Autres ingrédients : gélule végétale (hypromellose), acide stéarique d'origine végétale, dioxyde de silicium. Sans gélatine, sans soja : convient aux végétariens et aux végétaliens.
240 grammes de glutamine dans un flacon
240 gélules à 1 g, c'est 240 g de glutamine. À une gélule par jour, le flacon couvre huit mois ; à trois gélules, quatre-vingts jours. Comparé à la version 500 mg en flacon de 120, qui contient 60 g de glutamine, vous avez ici quatre fois la quantité pour un peu plus de trois fois le prix.
Contrepartie : la gélule est plus grosse, et un flacon de 240 gélules ouvert huit mois demande d'être refermé soigneusement et gardé à l'abri de l'humidité.
Questions fréquentes
Est-ce plus intéressant que le 500 mg ?
Au gramme de glutamine, oui : le flacon contient 240 g contre 60 g, pour un peu plus de trois fois le prix. La gélule est en revanche plus grosse.
« Forme libre », qu'est-ce que cela change ?
Le gramme déclaré est un gramme de glutamine, et non d'un sel dont la glutamine ne serait qu'une fraction.
Est-ce vegan ?
Oui. Gélule en hypromellose, excipients d'origine végétale ou minérale.
La Now Foods L-Glutamine 500 mg apporte 500 mg de L-glutamine sous forme libre par gélule végétale. Trois ingrédients en tout. Flacon de 120 gélules.
Composition
Forme libre, et non sel : les 500 mg déclarés sont 500 mg de glutamine. Autres ingrédients : gélule végétale (hypromellose), farine de riz, palmitate d'ascorbyle. Sans gélatine, sans soja, sans gluten ajouté : convient aux végétariens et aux végétaliens.
500 ou 1000 mg : ce qui change vraiment
Le rayon propose la même glutamine à 1 000 mg par gélule en flacon de 240. À quantité égale de glutamine, le grand format est nettement moins cher ; cette référence à 500 mg a deux avantages réels : un flacon plus petit si vous essayez, et une gélule plus facile à avaler. Les excipients diffèrent légèrement — farine de riz et palmitate d'ascorbyle ici, acide stéarique et dioxyde de silicium là-bas.
Questions fréquentes
« Forme libre », qu'est-ce que cela change ?
Les 500 mg déclarés sont 500 mg de glutamine, et non d'un sel dont la glutamine ne serait qu'une fraction.
Faut-il préférer le 1000 mg ?
À quantité égale de glutamine, oui, c'est moins cher. Cette référence est plus adaptée si vous voulez un petit flacon ou une gélule plus petite.
Est-ce vegan ?
Oui. Gélule en hypromellose, trois ingrédients d'origine végétale.
Qu'est-ce que la L-Glutamine en Poudre de NOW Foods ?
C'est de la L-glutamine sous forme libre, en poudre pure. La rubrique « autres ingrédients » de l'étiquette porte la mention « aucun » : rien d'autre dans le pot.
Une dose d'une cuillère à café bombée, soit environ 5 g, apporte 5 000 mg de glutamine. Deux conditionnements : 454 g, soit environ 91 doses, et 1 kg, soit 200.
La glutamine est l'acide aminé libre le plus abondant du plasma et du muscle. L'organisme sait la fabriquer, mais elle est aussi apportée par l'alimentation.
Ce qui distingue ce produit
Aucun excipient. C'est de la glutamine et rien d'autre.
Le prix au gramme. 5 g de poudre par dose représenteraient une dizaine de gélules ; la poudre est le seul format réaliste à cette dose.
Un goût neutre. La glutamine est l'un des rares acides aminés libres qui ne soit pas franchement amer. Elle passe sans difficulté dans l'eau.
Questions fréquentes
Y a-t-il des additifs ?
Non. L'étiquette indique « aucun » à la rubrique des autres ingrédients.
Quel goût ?
Neutre, contrairement à la plupart des acides aminés libres. Elle se mélange sans difficulté.
Poudre ou gélules ?
Pour 5 g par jour, la poudre est le seul format praticable. Les gélules conviennent à de petites doses.
Qu'est-ce que la L-Glutamine de Skill Nutrition ?
C'est de la L-glutamine pure en poudre, sans arôme, sans édulcorant et sans anti-agglomérant. Une dose de 5 g apporte 5 000 mg de L-glutamine, et c'est tout ce que contient le pot.
La glutamine est l'acide aminé le plus abondant du plasma et du muscle. L'organisme sait la fabriquer à partir d'autres acides aminés : elle fait partie des acides aminés dits non essentiels. Celle de Skill Nutrition est obtenue par fermentation végétale, ce qui la rend compatible avec un régime végétalien. Le reste de la gamme se parcourt dans le rayon Skill Nutrition.
Ce qu'il y a dans la L-Glutamine de Skill Nutrition
Un seul chiffre résume l'étiquette : 5 000 mg de L-glutamine dans une dose de 5 g, soit une mesurette rase. Aucune autre ligne ne figure sur la liste d'ingrédients.
Le panneau nutritionnel est d'une sobriété rare : zéro calorie, zéro glucide, zéro lipide. Seul le sel apparaît, à 0,36 g pour une dose, ce qui explique le léger goût salin de la poudre.
Deux formats couvrent la gamme : le pot de 300 g donne soixante doses, celui de 500 g en donne cent. La mesurette est fournie dans les deux.
La poudre est quasiment neutre en bouche. Elle se dissout dans un verre d'eau, dans un jus de fruit ou directement dans un shaker de protéines, sans en changer le goût ni la texture.
À qui s'adresse la L-Glutamine ?
À celui qui veut un acide aminé isolé, et rien autour. C'est toute la proposition de ce pot : une matière première, une ligne sur l'étiquette, un chiffre à vérifier. Les mélanges tout prêts dosent souvent la glutamine à l'aveugle, noyée dans une formule ; ici elle est seule et comptée.
C'est aussi le format de celui qui ajoute la glutamine à une routine déjà construite. La poudre neutre se glisse dans la boisson de l'entraînement, dans le shaker du soir ou dans un simple verre d'eau, sans en modifier le goût.
Elle convient enfin aux végétaliens : la matière première vient d'une fermentation végétale et aucun ingrédient d'origine animale n'entre dans la composition.
Questions fréquentes
Qu'est-ce que la L-glutamine ?
Un acide aminé non essentiel, le plus abondant du plasma et du muscle. L'organisme sait le fabriquer lui-même à partir d'autres acides aminés.
Quels sont les bienfaits de la L-glutamine ?
L'étiquette s'en tient à la composition : 5 000 mg de L-glutamine dans une dose de 5 g, et aucun autre ingrédient. C'est un acide aminé isolé, livré tel quel.
Où trouver la glutamine dans les aliments ?
Dans les aliments riches en protéines : viande, poisson, oeufs, produits laitiers, mais aussi soja, légumineuses et chou. Un régime végétal en apporte moins.
Pourquoi prendre de la glutamine en musculation ?
C'est l'acide aminé le plus représenté dans le muscle, ce qui explique sa place historique au rayon des acides aminés isolés. Cette poudre en apporte 5 g par dose, sans rien ajouter.
Cette poudre a-t-elle un goût ?
Quasiment aucun. Elle est légèrement saline, à cause des 0,36 g de sel de la dose, et disparaît dans n'importe quelle boisson.
Combien de doses contient un pot ?
Soixante doses dans le pot de 300 g, cent dans celui de 500 g. La mesurette est fournie dans les deux formats.
Y a-t-il des additifs dans ce pot ?
Non. La liste d'ingrédients tient en un mot : L-glutamine. Pas d'arôme, pas d'édulcorant, pas d'anti-agglomérant.
Où acheter la L-Glutamine de Skill Nutrition ?
Les pots de 300 g et de 500 g se commandent depuis cette page, avec expédition partout en France et en Europe. Notre magasin se trouve à Vendargues, à une dizaine de minutes de Montpellier, et la poudre y est en rayon.
Le reste de la marque se parcourt dans la collection Skill Nutrition.
What is glutamine and what is its role in the body?
Glutamine is a non-essential amino acid, meaning the body can produce it itself from glutamate and branched-chain amino acids. It is also, by far, the most abundant amino acid in the human body. It makes up the majority of the free amino acid pool in muscles and is the amino acid with the highest blood concentration.
Physiologically, it acts as a nitrogen shuttle between organs, a preferred fuel for rapidly renewing cells—intestinal wall enterocytes, immune cells—and a precursor in several metabolic pathways. These are biochemical facts, not effects of a supplement. The fact that a molecule plays a role in the body says nothing about what taking it in powder or capsule form will produce.
One point needs to be stated clearly, because it changes how this product category should be viewed: diet already provides plenty of it. Glutamine and its close relative, glutamate, are abundant in dietary proteins, both animal and plant-based: meat, fish, eggs, dairy products, wheat, legumes. An individual who consistently meets their protein intake, through food or with protein powders, already consumes several grams per day without even thinking about it. This is the context in which everything else on this page should be read.
Is glutamine really useful for muscle building?
It’s best to state it clearly rather than letting you discover it after three tubs: for healthy individuals who eat enough protein, the data on performance, strength, and muscle mass are weak. Glutamine became popular in sports nutrition aisles in the 1990s, driven by research conducted in very specific contexts—malnourished patients, severe burn victims, post-surgery—and then extrapolated to healthy individuals, where the reasoning doesn't hold in the same way: raw materials are not lacking in their bodies.
If your goal is muscle gain or recovery, your money is better spent elsewhere: total protein intake throughout the day first, then creatine monohydrate, the most well-documented supplement in sports nutrition. After that, depending on the context, EAAs or BCAAs around workouts, and a whey isolate if dairy digestion is an issue. Glutamine is not a bad product; it's a product whose promise has been exaggerated.
It still has defensible uses, but these fall under medically supervised situations, not self-supplementation: malnutrition, severe metabolic aggressions, and after heavy treatments. These situations should be discussed with a doctor, who will decide on the indication and dosage. We cannot and do not want to make any health claims on this matter.
Glutamine and the gut: what do we really know?
This is the fastest-rising query on this topic, and also where the most approximations are read. The starting point is accurate: enterocytes, the cells lining the small intestine, use glutamine as a major energy substrate. From there, a shortcut spread—"so taking it repairs the intestinal wall"—which has not been demonstrated in healthy individuals.
The concept of "leaky gut" itself remains debated and lacks a stable clinical definition outside of specific pathological contexts. In Europe, no health claim is authorized for glutamine: neither for the gut, nor for immunity, nor for recovery. A seller who promises any of these effects is operating outside the regulatory framework.
If you have persistent digestive problems—pain, severely disturbed transit, blood, involuntary weight loss—the correct approach is medical advice, not a tub of powder. For common digestive discomfort related to sports nutrition, it is often more useful to review fiber quantities, shaker ingestion speed, lactose tolerance, or to look into probiotics and digestive enzymes, again keeping a clear head about what to expect from them.
Does L-glutamine help with weight loss?
No. This search is frequent, the answer is simple: there is no solid data showing that L-glutamine causes weight loss in healthy individuals, and no such claim is authorized. Weight loss depends on maintaining a consistent energy deficit over time, sufficient protein intake to limit muscle wasting, and physical activity.
If this is your goal, look instead at what structures a weight loss approach: quality proteins, satisfying meals, and products that replace calories rather than adding them. No isolated amino acid will do this work for you.
How much glutamine per day and when to take it?
Common dosages used in commercial products are around 5 g per serving, sometimes 10 g split into two doses for heavier individuals. Glutamine powder dissolves in water, has a very neutral taste, and requires no special preparation. It can be taken on an empty stomach, after training, or in the evening: none of these times has demonstrated superiority, and the debate about the "best timing" is largely theoretical.
Regarding the duration of a cycle, a common question: there is no reference protocol. In practice, users proceed in periods of a few weeks, then assess. Our position is the same as for the rest of the range: if after a month you notice nothing, there is no reason to continue out of principle.
Finally, two useful clarifications. Glutamine does not mix well with very hot liquids, where it degrades; prefer cold or lukewarm water. And there is no need to mix it with whey: whey concentrate as well as isolate already contain it naturally.
Is glutamine dangerous?
At commonly used doses, glutamine is well-tolerated by healthy adults; reported side effects are primarily digestive and mild—bloating, discomfort—and dose-dependent. This does not mean it is suitable for everyone.
Three situations require medical advice before any intake: renal or hepatic insufficiency, because amino acid metabolism is altered in these cases; pregnancy and breastfeeding, due to insufficient data; and any oncological context or ongoing treatment, where the question of glutamine is exclusively discussed with the healthcare team. Dietary supplements never replace a varied diet or treatment, and should not be used as a substitute for medical advice.
For everything else, use only one source of glutamine at a time, and carefully read the labels of amino acid complexes, where it is often added in anecdotal amounts.
Frequently Asked Questions
What is glutamine?
A non-essential amino acid, meaning the body can produce it itself—unlike the nine essential amino acids, which must come from the diet. It is the most abundant in the human body: it represents the majority of free amino acids in muscle and has the highest blood concentration. It acts as a nitrogen transporter between organs and as fuel for rapidly renewing cells, especially those of the intestine. As a supplement, it is found under the name L-glutamine, the form naturally present in proteins.
What are the benefits of glutamine?
No effects are recognized by European regulations for glutamine as a supplement. What can be said without error is that it is the most abundant amino acid in the body and plays a role in many functions. What has been demonstrated in healthy individuals with proper nutrition, however, remains very limited.
Why take glutamine?
We prefer to answer frankly: for a healthy adult with adequate protein intake, there is no strong reason to do so, because the diet already provides several grams per day. The commonly advanced reasons—recovery, immunity, intestinal comfort—are not supported by any authorized claims in Europe and by weak data in this population. Situations where it has an established role are medical and decided with a doctor. If you still wish to try it, do so knowingly, for a short period, and judge by results.
When to take glutamine?
Whenever suits you: on an empty stomach in the morning, after training, or in the evening before bed. None of these time slots has demonstrated superiority over the others, and the "evening" argument, often put forward, has no solid basis. Two practical details are more important than timing: dilute in cold or lukewarm water, never in scalding liquid where it degrades, and take it separately from a large protein shake, which already contains it naturally.
How long should a glutamine cycle last?
There is no reference duration, nor a validated protocol. Common practice is to proceed in periods of three to six weeks, then honestly assess. In the absence of perceived benefit after one month, continuing "to allow time for it to work" has no justification: that would be true for a treatment, not for an amino acid that your diet already provides.
How much glutamine per day?
Market products most often suggest 5 g per dose, sometimes up to 10 g distributed throughout the day. Nothing indicates that going beyond this provides any additional benefit.
Is glutamine useful for the gut?
The reasoning is appealing—the cells of the intestinal wall do indeed use glutamine as their primary fuel—but the leap to "taking it repairs the gut" has not been demonstrated in healthy individuals. No European claim authorizes such an assertion, and the concept of "leaky gut" lacks a stable clinical definition outside of specific pathological contexts. Faced with persistent digestive problems—pain, severely disturbed transit, blood, involuntary weight loss—the answer is a consultation, not a tub of powder. For common discomfort related to sports nutrition, first look at fiber, the speed of shaker ingestion, and lactose tolerance.
Is it dangerous to take glutamine?
In healthy adults and at usual doses, reported side effects are mostly digestive and mild—bloating, discomfort, altered transit in one direction or another—and are dose-dependent. In cases of kidney or liver impairment, pregnancy, breastfeeding, or ongoing treatment, a doctor's advice is essential beforehand. Also check the labels of your other products: glutamine is often added to amino acid complexes, and two sources can accumulate without you knowing.
Does glutamine make you gain weight?
No. A 5g dose provides a negligible amount of energy and does not alter the daily caloric balance. If your goal is weight gain, the leverage lies with gainer and meal organization, not an isolated amino acid.
Does L-glutamine help with weight loss?
No, and no such claim is authorized in Europe. There is no solid data showing an effect on weight in healthy individuals. What causes weight loss remains a sustained energy deficit, with sufficient protein to limit muscle wasting.
Where can glutamine be found in food?
In all protein sources: meats, fish, eggs, dairy products, but also wheat, soy, legumes, and nuts. This is precisely why a deficiency is unlikely in someone who eats enough protein.
When to take glutamine and BCAAs?
Nothing requires them to be separated, and nothing requires them to be combined. If you use amino acids around your workout, EAAs cover a more complete spectrum than BCAAs alone. Glutamine, on the other hand, can be taken whenever suits you.
How to know if you are deficient in glutamine?
There is no self-test or simple clinical sign, and blood levels are only interpretable in a specific medical context. For a healthy person with adequate protein intake, the question does not arise in practice.
What glutamine products do we offer?
Our selection remains deliberately concise, because there aren't ten ways to make decent L-glutamine. We offer a pure powder from the German brand Sinob, without flavorings or unnecessary fillers, and the fermented glutamine from IO Genix, which uses Kyowa Quality raw material—a Japanese fermentation label that guarantees amino acid traceability, not an effect.
The selection criterion is simple: a short ingredient list, indicated raw material origin, and a price reported per gram, not per tub. Our sports nutrition section brings together all families, and the mass gain section covers high caloric needs.
Where to buy glutamine near Montpellier?
Our store in Vendargues, about ten minutes from Montpellier, allows us to approach the question differently: rather than comparing tubs, we first look at what you eat and what you already take. For glutamine in particular, we often advise against buying it. We also ship throughout France and Europe.
Regulatory and scientific sources: EFSA for opinions on health claims, ANSES for French recommendations on food supplements for athletes.
Qu'est-ce que le L-Glutamine 5000 ?
Le L-Glutamine 5000 est une glutamine en poudre non aromatisée, à doser à la mesurette. Une dose de 5,8 g apporte 5 000 mg de L-glutamine, 250 mg de L-alanine et 250 mg de N-acétyl-L-glutamine. Trois lignes d'étiquette, toutes chiffrées, aucune n'est noyée dans un mélange propriétaire.
Il appartient à la Core Series, la ligne des actifs simples de la marque fondée par Rich Piana. Le reste de la gamme est dans le rayon 5% Nutrition.
Ce qu'il y a dans le L-Glutamine 5000
Le chiffre principal, c'est 5 000 mg de L-glutamine. C'est l'acide aminé le plus abondant du muscle et du plasma : l'organisme en fabrique en permanence, et la demande monte quand la charge d'entraînement monte. Beaucoup de glutamines s'arrêtent là, rares sont celles qui ajoutent quelque chose par-dessus.
Ici, il y a deux ajouts. Le premier, 250 mg de N-acétyl-L-glutamine, est une forme acétylée : la glutamine libre se dégrade assez vite en solution, l'acétylation la rend nettement plus stable dans un liquide. Le second, 250 mg de L-alanine, repose sur le fait que glutamine et alanine voyagent ensemble entre le muscle et le foie dans le cycle glucose-alanine ; les associer n'a rien d'un hasard de formulateur.
Troisième chiffre : 60 doses par pot de 348 g. La poudre est totalement neutre en goût, ce qui en fait un additif utilisable partout, dans un shaker de protéines comme dans un simple verre d'eau, sans que rien ne change au palais.
À qui s'adresse le L-Glutamine 5000 ?
D'abord au pratiquant qui enchaîne les séances rapprochées. C'est le profil historique de la glutamine : charge élevée, peu de jours de repos, besoin de récupérer entre deux entraînements du même groupe musculaire.
Ensuite à celui qui est en période sèche. Quand les calories baissent, les apports en protéines deviennent plus serrés et la glutamine alimentaire suit la même pente ; une poudre dosée permet de maintenir cet apport sans ajouter de calories notables au bilan de la journée.
Enfin à celui qui construit son propre protocole de récupération. Non aromatisée, cette glutamine se combine sans heurt avec une créatine, des acides aminés ou une protéine, et laisse le goût de la boisson intact.
Questions fréquentes
Quels sont les bienfaits de la L-glutamine ?
La glutamine est l'acide aminé le plus abondant du muscle et du plasma sanguin. L'organisme la fabrique lui-même, mais il en consomme davantage pendant les périodes d'entraînement soutenu, ce qui explique sa présence dans les routines de récupération depuis plus de trente ans.
Pourquoi prendre de la glutamine en musculation ?
Parce que c'est le carburant préféré des cellules à renouvellement rapide, et que l'entraînement intensif pioche dedans. Les pratiquants l'utilisent surtout sur les phases de volume élevé et sur les périodes de déficit calorique, quand l'apport alimentaire se resserre.
Quand prendre la glutamine ?
Le plus souvent juste après la séance, dans le shaker de protéines, ou le soir à distance du repas. Non aromatisée, elle se mélange dans n'importe quelle boisson chaude ou froide sans en modifier le goût.
Pourquoi prendre la glutamine le soir ?
Parce que c'est un créneau calme, éloigné des autres apports d'acides aminés qui lui font concurrence au moment du transport intestinal. Beaucoup la placent simplement là par habitude, dans un verre d'eau, parce que c'est le moment le plus facile à tenir sur la durée.
Où trouver la glutamine dans les aliments ?
Dans toutes les sources de protéines : viande, poisson, œufs, fromages et produits laitiers, et côté végétal les légumineuses, le soja, les épinards et le chou. Une alimentation déjà riche en protéines en apporte une part importante.
Combien de temps dure une cure de glutamine ?
Il n'existe pas de durée imposée : c'est un constituant normal de l'alimentation. En pratique, les pratiquants l'utilisent sur les périodes où la charge d'entraînement est la plus lourde, puis la mettent de côté lorsque le rythme redescend.
Est-ce dangereux de prendre de la glutamine ?
La glutamine est un constituant normal des protéines alimentaires et du corps humain : vous en consommez chaque jour sans y penser, dès que vous mangez de la viande, du poisson ou du fromage. La poudre ne fait que concentrer ce que l'assiette apporte déjà de façon diffuse.
Où acheter le L-Glutamine 5000 ?
Le L-Glutamine 5000 est expédié vers toute la France et vers l'Europe, avec une préparation le jour même pour les commandes passées en semaine.
La boutique KISS NUTRITION est installée à Vendargues, à dix minutes de Montpellier : le pot est en rayon et l'étiquette se lit au comptoir. L'ensemble de la gamme est regroupé dans le rayon 5% Nutrition.
Retrait au magasin sous 2 h
À Vendargues, près de Montpellier. Vous êtes prévenu dès que la commande est prête.
Commandé avant 14 h, expédié le jour même
Du lundi au samedi. Le délai d'acheminement appartient ensuite au transporteur.
Livraison offerte dès 69 €
En France métropolitaine, et dès 100 € en Europe. Modes et délais.
Une question avant de commander ?
Écrivez-nous ou passez au magasin : on connaît les produits qu'on vend.
What is glutamine and what is its role in the body?
Glutamine is a non-essential amino acid, meaning the body can produce it itself from glutamate and branched-chain amino acids. It is also, by far, the most abundant amino acid in the human body. It makes up the majority of the free amino acid pool in muscles and is the amino acid with the highest blood concentration.
Physiologically, it acts as a nitrogen shuttle between organs, a preferred fuel for rapidly renewing cells—intestinal wall enterocytes, immune cells—and a precursor in several metabolic pathways. These are biochemical facts, not effects of a supplement. The fact that a molecule plays a role in the body says nothing about what taking it in powder or capsule form will produce.
One point needs to be stated clearly, because it changes how this product category should be viewed: diet already provides plenty of it. Glutamine and its close relative, glutamate, are abundant in dietary proteins, both animal and plant-based: meat, fish, eggs, dairy products, wheat, legumes. An individual who consistently meets their protein intake, through food or with protein powders, already consumes several grams per day without even thinking about it. This is the context in which everything else on this page should be read.
Is glutamine really useful for muscle building?
It’s best to state it clearly rather than letting you discover it after three tubs: for healthy individuals who eat enough protein, the data on performance, strength, and muscle mass are weak. Glutamine became popular in sports nutrition aisles in the 1990s, driven by research conducted in very specific contexts—malnourished patients, severe burn victims, post-surgery—and then extrapolated to healthy individuals, where the reasoning doesn't hold in the same way: raw materials are not lacking in their bodies.
If your goal is muscle gain or recovery, your money is better spent elsewhere: total protein intake throughout the day first, then creatine monohydrate, the most well-documented supplement in sports nutrition. After that, depending on the context, EAAs or BCAAs around workouts, and a whey isolate if dairy digestion is an issue. Glutamine is not a bad product; it's a product whose promise has been exaggerated.
It still has defensible uses, but these fall under medically supervised situations, not self-supplementation: malnutrition, severe metabolic aggressions, and after heavy treatments. These situations should be discussed with a doctor, who will decide on the indication and dosage. We cannot and do not want to make any health claims on this matter.
Glutamine and the gut: what do we really know?
This is the fastest-rising query on this topic, and also where the most approximations are read. The starting point is accurate: enterocytes, the cells lining the small intestine, use glutamine as a major energy substrate. From there, a shortcut spread—"so taking it repairs the intestinal wall"—which has not been demonstrated in healthy individuals.
The concept of "leaky gut" itself remains debated and lacks a stable clinical definition outside of specific pathological contexts. In Europe, no health claim is authorized for glutamine: neither for the gut, nor for immunity, nor for recovery. A seller who promises any of these effects is operating outside the regulatory framework.
If you have persistent digestive problems—pain, severely disturbed transit, blood, involuntary weight loss—the correct approach is medical advice, not a tub of powder. For common digestive discomfort related to sports nutrition, it is often more useful to review fiber quantities, shaker ingestion speed, lactose tolerance, or to look into probiotics and digestive enzymes, again keeping a clear head about what to expect from them.
Does L-glutamine help with weight loss?
No. This search is frequent, the answer is simple: there is no solid data showing that L-glutamine causes weight loss in healthy individuals, and no such claim is authorized. Weight loss depends on maintaining a consistent energy deficit over time, sufficient protein intake to limit muscle wasting, and physical activity.
If this is your goal, look instead at what structures a weight loss approach: quality proteins, satisfying meals, and products that replace calories rather than adding them. No isolated amino acid will do this work for you.
How much glutamine per day and when to take it?
Common dosages used in commercial products are around 5 g per serving, sometimes 10 g split into two doses for heavier individuals. Glutamine powder dissolves in water, has a very neutral taste, and requires no special preparation. It can be taken on an empty stomach, after training, or in the evening: none of these times has demonstrated superiority, and the debate about the "best timing" is largely theoretical.
Regarding the duration of a cycle, a common question: there is no reference protocol. In practice, users proceed in periods of a few weeks, then assess. Our position is the same as for the rest of the range: if after a month you notice nothing, there is no reason to continue out of principle.
Finally, two useful clarifications. Glutamine does not mix well with very hot liquids, where it degrades; prefer cold or lukewarm water. And there is no need to mix it with whey: whey concentrate as well as isolate already contain it naturally.
Is glutamine dangerous?
At commonly used doses, glutamine is well-tolerated by healthy adults; reported side effects are primarily digestive and mild—bloating, discomfort—and dose-dependent. This does not mean it is suitable for everyone.
Three situations require medical advice before any intake: renal or hepatic insufficiency, because amino acid metabolism is altered in these cases; pregnancy and breastfeeding, due to insufficient data; and any oncological context or ongoing treatment, where the question of glutamine is exclusively discussed with the healthcare team. Dietary supplements never replace a varied diet or treatment, and should not be used as a substitute for medical advice.
For everything else, use only one source of glutamine at a time, and carefully read the labels of amino acid complexes, where it is often added in anecdotal amounts.
Frequently Asked Questions
What is glutamine?
A non-essential amino acid, meaning the body can produce it itself—unlike the nine essential amino acids, which must come from the diet. It is the most abundant in the human body: it represents the majority of free amino acids in muscle and has the highest blood concentration. It acts as a nitrogen transporter between organs and as fuel for rapidly renewing cells, especially those of the intestine. As a supplement, it is found under the name L-glutamine, the form naturally present in proteins.
What are the benefits of glutamine?
No effects are recognized by European regulations for glutamine as a supplement. What can be said without error is that it is the most abundant amino acid in the body and plays a role in many functions. What has been demonstrated in healthy individuals with proper nutrition, however, remains very limited.
Why take glutamine?
We prefer to answer frankly: for a healthy adult with adequate protein intake, there is no strong reason to do so, because the diet already provides several grams per day. The commonly advanced reasons—recovery, immunity, intestinal comfort—are not supported by any authorized claims in Europe and by weak data in this population. Situations where it has an established role are medical and decided with a doctor. If you still wish to try it, do so knowingly, for a short period, and judge by results.
When to take glutamine?
Whenever suits you: on an empty stomach in the morning, after training, or in the evening before bed. None of these time slots has demonstrated superiority over the others, and the "evening" argument, often put forward, has no solid basis. Two practical details are more important than timing: dilute in cold or lukewarm water, never in scalding liquid where it degrades, and take it separately from a large protein shake, which already contains it naturally.
How long should a glutamine cycle last?
There is no reference duration, nor a validated protocol. Common practice is to proceed in periods of three to six weeks, then honestly assess. In the absence of perceived benefit after one month, continuing "to allow time for it to work" has no justification: that would be true for a treatment, not for an amino acid that your diet already provides.
How much glutamine per day?
Market products most often suggest 5 g per dose, sometimes up to 10 g distributed throughout the day. Nothing indicates that going beyond this provides any additional benefit.
Is glutamine useful for the gut?
The reasoning is appealing—the cells of the intestinal wall do indeed use glutamine as their primary fuel—but the leap to "taking it repairs the gut" has not been demonstrated in healthy individuals. No European claim authorizes such an assertion, and the concept of "leaky gut" lacks a stable clinical definition outside of specific pathological contexts. Faced with persistent digestive problems—pain, severely disturbed transit, blood, involuntary weight loss—the answer is a consultation, not a tub of powder. For common discomfort related to sports nutrition, first look at fiber, the speed of shaker ingestion, and lactose tolerance.
Is it dangerous to take glutamine?
In healthy adults and at usual doses, reported side effects are mostly digestive and mild—bloating, discomfort, altered transit in one direction or another—and are dose-dependent. In cases of kidney or liver impairment, pregnancy, breastfeeding, or ongoing treatment, a doctor's advice is essential beforehand. Also check the labels of your other products: glutamine is often added to amino acid complexes, and two sources can accumulate without you knowing.
Does glutamine make you gain weight?
No. A 5g dose provides a negligible amount of energy and does not alter the daily caloric balance. If your goal is weight gain, the leverage lies with gainer and meal organization, not an isolated amino acid.
Does L-glutamine help with weight loss?
No, and no such claim is authorized in Europe. There is no solid data showing an effect on weight in healthy individuals. What causes weight loss remains a sustained energy deficit, with sufficient protein to limit muscle wasting.
Where can glutamine be found in food?
In all protein sources: meats, fish, eggs, dairy products, but also wheat, soy, legumes, and nuts. This is precisely why a deficiency is unlikely in someone who eats enough protein.
When to take glutamine and BCAAs?
Nothing requires them to be separated, and nothing requires them to be combined. If you use amino acids around your workout, EAAs cover a more complete spectrum than BCAAs alone. Glutamine, on the other hand, can be taken whenever suits you.
How to know if you are deficient in glutamine?
There is no self-test or simple clinical sign, and blood levels are only interpretable in a specific medical context. For a healthy person with adequate protein intake, the question does not arise in practice.
What glutamine products do we offer?
Our selection remains deliberately concise, because there aren't ten ways to make decent L-glutamine. We offer a pure powder from the German brand Sinob, without flavorings or unnecessary fillers, and the fermented glutamine from IO Genix, which uses Kyowa Quality raw material—a Japanese fermentation label that guarantees amino acid traceability, not an effect.
The selection criterion is simple: a short ingredient list, indicated raw material origin, and a price reported per gram, not per tub. Our sports nutrition section brings together all families, and the mass gain section covers high caloric needs.
Where to buy glutamine near Montpellier?
Our store in Vendargues, about ten minutes from Montpellier, allows us to approach the question differently: rather than comparing tubs, we first look at what you eat and what you already take. For glutamine in particular, we often advise against buying it. We also ship throughout France and Europe.
Regulatory and scientific sources: EFSA for opinions on health claims, ANSES for French recommendations on food supplements for athletes.
Sources
- ANSES — Les compléments alimentaires
- Règlement UE n° 432/2012 — allégations de santé autorisées
- Règlement CE n° 1924/2006 — allégations nutritionnelles et de santé
À intégrer dans une alimentation variée et équilibrée et un mode de vie sain.
Questions fréquentes — L-Glutamine
La glutamine, c'est quoi ?
Un acide aminé non essentiel, c'est-à-dire que l'organisme sait fabriquer lui-même — à la différence des neuf acides aminés essentiels, qui doivent venir de l'alimentation. C'est le plus abondant du corps humain : il représente la majeure partie des acides aminés libres du muscle et affiche la concentration sanguine la plus élevée. Il sert de transporteur d'azote entre les organes et de carburant aux cellules à renouvellement rapide, notamment celles de l'intestin. En complément, on le trouve sous le nom de L-glutamine, la forme naturellement présente dans les protéines.
Que peut-on dire de la glutamine ?
Le cadre européen ne reconnaît aucune allégation de santé pour la glutamine en complément, et nous nous y tenons. Ce qui se dit sans réserve, c'est qu'elle est l'acide aminé le plus abondant de l'organisme et qu'elle intervient dans de nombreuses fonctions, dont le carburant des cellules intestinales.
À qui s'adresse la glutamine en poudre ?
À ceux qui veulent une L-glutamine pure, à dose mesurée, en dehors des repas : une poudre neutre au goût, qui se dilue dans l'eau en quelques secondes et s'ajoute à une routine sans en changer l'équilibre. L'alimentation en apporte déjà plusieurs grammes par jour chez qui couvre ses protéines ; la poudre répond à la demande de ceux qui souhaitent l'isoler. Les situations où son rôle est établi sont médicales et se décident avec un médecin.
Quand prendre la glutamine ?
Au moment qui vous arrange : à jeun le matin, après l'entraînement ou le soir avant le coucher. Aucun de ces créneaux n'a démontré de supériorité sur les autres, ce qui laisse le choix à votre organisation. Deux précisions pratiques comptent plus que le timing : diluez dans de l'eau froide ou tiède, jamais dans un liquide brûlant où elle se dégrade, et prenez-la à distance d'un gros shaker de protéines, qui en contient déjà naturellement.
Une cure de glutamine, combien de temps ?
Il n'existe pas de durée de référence. La pratique courante consiste à procéder par périodes de trois à six semaines, puis à faire le point sur ses sensations avant de repartir sur une période.
Quelle quantité de glutamine par jour ?
Les produits du marché proposent le plus souvent 5 g par dose, parfois jusqu'à 10 g répartis dans la journée. C'est la fourchette dans laquelle nous référençons.
Glutamine et intestin : qu'en dit la réglementation ?
Les cellules de la paroi intestinale utilisent effectivement la glutamine comme carburant principal : c'est un fait de physiologie. En revanche, aucune allégation européenne n'autorise à en déduire un effet sur l'intestin, et c'est le cadre que nous respectons. Face à des troubles digestifs persistants — douleurs, transit très perturbé, sang, perte de poids involontaire — l'avis de votre médecin reste la référence. Pour un inconfort banal lié à l'alimentation sportive, regardez d'abord les fibres, la vitesse d'ingestion des shakers et la tolérance au lactose.
Est-ce dangereux de prendre de la glutamine ?
Chez l'adulte en bonne santé et aux doses usuelles, les effets indésirables signalés sont surtout digestifs et légers — ballonnements, inconfort, transit modifié — et dépendent de la dose. En cas d'atteinte rénale ou hépatique, de grossesse, d'allaitement ou de traitement en cours, l'avis d'un médecin est indispensable au préalable. Vérifiez aussi les étiquettes de vos autres produits : la glutamine étant souvent présente dans les complexes d'acides aminés, cela évite de doubler la source.
Est-ce que la glutamine fait grossir ?
Non. Une dose de 5 g apporte une quantité d'énergie négligeable et ne modifie pas le bilan calorique de la journée. Si votre objectif est la prise de poids, le levier se trouve du côté du gainer et de l'organisation des repas.
La L-glutamine agit-elle sur le poids ?
Aucune allégation de ce type n'est autorisée en Europe, et une dose de 5 g n'apporte pas d'énergie significative. Ce qui fait perdre du poids reste un déficit énergétique tenu dans la durée, avec des protéines en quantité suffisante pour préserver la masse musculaire.
Où trouver de la glutamine dans l'alimentation ?
Dans toutes les sources de protéines : viandes, poissons, œufs, produits laitiers, mais aussi blé, soja, légumineuses et fruits à coque. Une alimentation couvrant les apports protéiques en fournit donc déjà plusieurs grammes par jour.
Quand prendre la glutamine et les BCAA ?
Rien n'oblige à les séparer, et rien n'oblige à les associer. Si vous utilisez des acides aminés autour de la séance, les EAA couvrent un spectre plus complet que les BCAA seuls. La glutamine, elle, peut se prendre au moment qui vous arrange.
Comment savoir si on manque de glutamine ?
Il n'existe pas d'autotest ni de signe clinique simple, et le dosage sanguin s'interprète dans un contexte médical : c'est une question à poser à votre médecin.
