Sinob Core L-Arginine AAKG - Superior Absorption

What is Sinob Core L-Arginine AAKG?

Sinob Core AAKG is a powdered amino acid for mixing with liquid, sold in a 300 g tub, which works out at 30 servings of 10 g. Its only ingredient is L-arginine alpha-ketoglutarate, a salt in which arginine is bound to alpha-ketoglutarate, an intermediate of the Krebs cycle. No sweeteners, no flavourings, no colourings, no preservatives: the powder is unadulterated and so is its taste.

The product belongs to our L-arginine range. Sinob is a German brand whose line-up we stock in the Sinob range. The formulation contains no ingredients of animal origin and the manufacturer declares no allergens.

What does a serving of Core AAKG contain?

A 10 g serving provides 10 g of L-arginine alpha-ketoglutarate, of which 6.567 g is L-arginine and 3.433 g is alpha-ketoglutarate. Expressed per 100 g, that comes to 65.67 g of arginine.

This is the only figure that matters when comparing two products, and it is rarely put front and centre. “10 g of AAKG” is not “10 g of arginine”: a third of the powder's weight is alpha-ketoglutarate. Set against an arginine HCl, whose arginine share is higher, the comparison has to be made gram of arginine against gram of arginine, price included.

One clarification is called for here: other contents are quoted for this product, notably a figure of 53.5%. We stand by the 65.67% given in our labelling data, and we are flagging the discrepancy rather than quietly passing over it. If in doubt, the value printed on the tub you receive is the one that counts.

A final point of context: arginine carries no authorised health claim in Europe. What we are describing, then, is a formulation, a dose and a format, not an expected effect. The full nutritional breakdown is set out in the tabs on this page.

How do you take Sinob Core AAKG?

The recommended dose is 10 g per day, that is one level scoop, mixed into 200 ml of water or juice and shaken for around thirty seconds in a shaker. Drink immediately after preparing.

The manufacturer settles on one serving a day, in the morning on an empty stomach, or 30 minutes before training on session days. Do not exceed 10 g per day: that is the limit stated on the label. As for duration, it advises cycling 8 weeks of use followed by 2 weeks off. The 30-serving tub therefore covers a month of daily use, or roughly two and a half months if you take it only on training days.

Two practical remarks. The taste is frankly sour and bitter — that is the trade-off of an unflavoured powder; citrus juice makes it far more drinkable than a plain glass of water. And 10 g of an amino acid on an empty stomach does not suit every stomach: nausea, bloating or loose stools should prompt you to cut back or stop. A decent shaker is not a luxury, since the powder dissolves poorly when stirred with a spoon.

Who is Core AAKG for, and who is it not for?

The product is intended for adults. It is suitable for vegetarian and vegan diets, as its formulation contains no ingredients of animal origin, and the manufacturer declares no gluten, no lactose and no soya.

It is not suitable for women who are pregnant or breastfeeding. The manufacturer contraindicates it in people who have had a myocardial infarction: this statement appears explicitly on the label and should be taken seriously. It also advises against using it in cases of recurrent herpes, as arginine may encourage outbreaks — this is the most frequently asked question about this amino acid, and the answer here is no. Keep out of reach of children under 3. If you are undergoing medical treatment, seek advice from a healthcare professional before use.

What you should not expect from it: since no health claim is authorised for arginine, this product promises nothing regarding circulation, performance or recovery, and we are not going to write otherwise. Nor is it a strength product: on that front, creatine monohydrate is better established and costs less per day.

Core AAKG or citrulline?

This is the decisive comparison, and it starts with this product's own billing, which highlights superior absorption. The implicit comparison is with L-arginine hydrochloride, the most widespread form. It is not documented by any health authority, and we will not be repeating the multipliers — “three times more”, “ten times more” — commonly read about this type of formula: those figures have no verifiable source.

More importantly, the fundamental issue lies elsewhere. The limiting factor for orally taken arginine is not the salt chosen but a substantial first-pass effect: a significant share is broken down by arginase in the gut and the liver before it reaches the circulation. Switching salts does not remove that mechanism. L-citrulline, by contrast, largely escapes it and is then converted into arginine in the kidney: taken orally, citrulline raises plasma arginine more effectively than arginine itself, whatever its form. That is established, and it does not work in AAKG's favour.

Citrulline is therefore the better choice in the most common use case: a serving before the session. It is generally better tolerated digestively at an equivalent dose, and its taste, though sour, remains more palatable. It is also what you will find in most of the complete pre-workouts in the range, which have largely swapped it in for arginine.

Core AAKG keeps two situations for itself. The first: you want a single-ingredient product, with no sweetener or flavouring, so you can build your own pre-workout and set each dose yourself. The second: you are specifically after the alpha-ketoglutarate intake, which citrulline does not provide. Outside those two cases, citrulline is the more rational choice, and we would rather say so than sell at all costs the very product page you are reading.

Frequently asked questions

How much arginine is there really in a 10 g serving?

6.567 g of arginine and 3.433 g of alpha-ketoglutarate, which is 65.67% arginine. That is the figure to remember when comparing with another product: a label stating “10 g of AAKG” is not stating 10 g of arginine, and the real price difference is worked out per gram of arginine, not per gram of powder.

Can you take it if you have herpes?

The manufacturer advises against it in cases of recurrent herpes, as arginine may encourage outbreaks. This is the precaution most often looked up about this amino acid, and it appears explicitly on the label. If it applies to you, this product is not for you; speak to your doctor or your pharmacist about it.

What does the powder taste like, and how do you make it drinkable?

Sour and bitter, with nothing to mask it since the formula contains neither flavouring nor sweetener. A 200 ml citrus juice goes down far better than still water, and the acidity of the juice works with that of the powder. Shake for thirty seconds in a shaker: stirred with a spoon, it dissolves badly.

How long does the 300 g tub last?

Thirty days with daily use, or roughly two and a half months if you keep it for training days at three sessions a week. With the 8-week cycling the manufacturer advises, one tub does not cover a full cycle under daily use.

Should it be taken on an empty stomach or with a meal?

The manufacturer settles on the morning on an empty stomach or 30 minutes before the session. A protein-rich meal eaten just before puts other amino acids in competition for intestinal transport. If 10 g on an empty stomach makes you feel nauseous, taking it becomes uncomfortable: better then to reduce the dose than to press on.

Can it be combined with citrulline or with a pre-workout?

There is nothing against it, but the benefit is limited: both target the same pathway, and citrulline does it better orally. If you are already taking a complete pre-workout, check its formulation before adding this product, as most already contain several grams of citrulline. Stacking is no substitute for dosing.

Does the product contain additives or allergens?

No. The only ingredient is L-arginine alpha-ketoglutarate, with no sweetener, flavouring, colouring or preservative, and the manufacturer declares no allergens. That is this line's main selling point: a single-component powder whose dosing is entirely under your control.

Where can you buy Sinob Core L-Arginine AAKG?

You can order it on this page, and we ship throughout France and Europe. At the Vendargues shop, about ten minutes from Montpellier, this is typically the product on which we take the time to ask the question before selling: for most pre-session uses, citrulline remains the best value for money, and it is better to hear that over the counter than after buying. All our amino acids can be found in our sports nutrition range.