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Our range of BCAAs to boost your sporting performance

There are 9 essential amino acids that our body cannot produce, Histidine, Lysine, Leucine, Methionine, Isoleucine, Phenylalanine, Threonine, Valine and Tryptophan among which there are 3 branched chain amino acids (BCAA). ) present in all animal proteins (leucine, isoleucine and valine). These BCAAs must be provided through food (egg, chicken, beef, tuna, etc.) or through supplementation, that is to say by taking food supplements. Particularly crucial for muscle building, BCAAs support anabolism by improving protein synthesis, reducing muscle fatigue and effectively fighting catabolism. Muscles need BCAAs before, during and after training, both for muscle development and for muscle recovery, to maintain muscle mass in the context of cutting, to improve training performance, to delay the onset of fatigue, in endurance sports or in strength sports such as bodybuilding. Whatever the sport practiced, BCAAs are a central element in stimulating protein synthesis in the muscles, these amino acids will therefore accelerate the use of calories, thus increasing the basal metabolism. By consuming BCAAs, generally in powder form, with a high metabolism, the body will burn more calories even outside of training periods. Stimium BCAA Instant, a product from Stimium Laboratories, combines BCAA and L-Glutamine with optimized and ultra-rapid assimilation, to synthesize proteins even more efficiently, making it one of the best-selling BCAA-based food supplements. In France. With appropriate nutrition (low in lipids and carbohydrates), and the intake of proteins and creatine, muscle building will only be more effective.

Discover our new products in the BCAA range


Widely used since the 60s/70s in bodybuilding and bodybuilding due in particular to anabolic, anti-catabolic effects or even muscle mass gain, the effects of taking BCAAs are in reality much broader and beneficial on other physiological segments such as energy saving, nervous fatigue, concentration, construction of muscle tissues... which explains their now much wider use, in team sports, as in individual sports, including in the ultra-endurance (100km, raid, ultratrail, Ironman, Marathon des Sables, etc.). The term BCAA stands for Branched Chain Amino Acids, it is a combination of 3 amino acids: leucine, isoleucine and valine, and constitute approximately between a quarter and a third of the proteins in the muscles of the central nervous system. These amino acids improve recovery, promote muscle building while optimizing recovery. BCAAs can be taken before and after workouts with no difference in their effectiveness. They act on energy, protein synthesis and recovery, and save muscle glycogen, resulting in a boosting effect and reduction of fatigue. BCAAs are relevant both for fans of endurance sports and for athletes practicing fitness and bodybuilding, it being understood that we recommend taking them daily for a minimum of 2 to 3 months. Unlike other amino acids which are metabolized and transformed in the liver, BCAAs are metabolized directly in the muscle. When the muscle has exhausted its glycogen stock, it begins to use lipids (Keto diet) and proteins (hence the interest in supplementing with WPC, Isolate, Vegan, etc.) to produce energy. BCAAs will therefore help protect the muscle during exercise. Taking BCAAs can be done before, during and after training. In the sports nutrition arsenal, the benefits of BCAAs are numerous:

- Helps build muscle
- Better recovery after sessions
- Increased protein synthesis
- Muscle gain
- Anti-catabolic effect to maintain muscle mass.

Note that the BCAA values ​​2:1:1, 4:1:1 or 8:1:1 correspond to the ratio of the presence of L-Leucine, the most interesting amino acid for muscle anabolism.


The first reason that Stimium Laboratories developed the new BCAA Instant product is very simple: BCAAs are essential amino acids that the body does not know how to synthesize, so they cannot be provided solely by external consumption, which is what the body does not know how to synthesize. we will call an exogenous intake, classically via food or even food supplements. If in endurance sports, it is indeed imperative to consume isotonic drinks and exercise drinks, including in particular the classic carbohydrates (glucose, fructose, dextrose, maltodextrins, etc.), minerals (magnesium, potassium, calcium, etc.) and vitamins (B, C, D, E, etc.), previously forgotten BCAAs are now becoming an absolutely necessary product in sports nutrition for these long efforts.

Indeed, in addition to their recognized role in muscle building, BCAAs are also involved in several other physiological reactions during significant effort, which will explain their interest in a sports nutrition pack. During long efforts, the body will use BCAAs from the muscles to produce energy, so it is actually very useful to consume BCAAs during exercise for the degradation of the architecture of our muscles, and thus delay muscle fatigue thresholds. Taking BCAAs in your bottle will save muscle glycogen, the fuel for our muscles. Without BCAA, fatigue will appear much more quickly because glycogen stocks are greatly reduced during long efforts, whereas with BCAA, nervous or central fatigue is reduced, making performance easier to achieve and providing a certain fullness during the race. BCAAs are the most relevant amino acids for muscle recovery thanks to a very significant anti-catabolic power, delaying the onset of fatigue during exercise and reducing the accumulation of lactic acid in muscle fibers. Time, BCAAs help improve protein synthesis, thanks to L-Leucine, which is the most anabolic amino acid of all. Isoleucine and valine will in particular reduce the destruction of muscle fibers, which will make it possible to optimize energy metabolism. Ultimately, depending on the desired objective, BCAAs are amino acids that can be consumed either before, during or after training, even if taking BCAAs should be preferred around training, before during training. or afterwards to provide more energy to the muscles.

BCAA Instant has been formulated in powder, this format being practical enough to be used during training in a bottle or shaker (unlike BCAAs in tablets which are more intended for Pre or Post WorkOut use. Combining BCAAs with L-glutamine, which actively participates in the protein metabolism necessary for muscle building while helping to reduce fatigue linked to exercise because it increases glycogen reserves, BCAA Instant proves to be a unique product in potentiating the two components BCAA and Glutamine, optimizing the speed of recovery, developing faster muscle building and even boosting the immune defenses of athletes. BCAA Instant helps prevent overtraining syndrome, thanks to its formidable effectiveness, without side effects. note that several studies also seem to demonstrate that BCAAs, mainly via Leucine, can influence satiety, and therefore the feeling of hunger. On dry days or during weight loss phases, by combining with Stimium Thermoshape to burn fat and/or Stimium Hydro Off as a drainer, BCAAs seem to be extremely effective, allowing you to feel less hungry. As with many raw materials currently, it is very complicated to be able to guarantee high stocks due to tension on this type of ingredient. We try at Stimium to cover our supplies, by trying to keep reasonable prices, but nothing is really easy in the current context, especially for a French Laboratory.