Sinob Core L-Glutamine - Pure Muscle Recovery

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?

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.