Natural precursor of anabolic hormones, in addition to improving vasodilation and acting as a liver detoxifier. L-Arginine is a semi-essential or conditionally essential amino acid, that is, it can be naturally synthesized in the body. But in cases of mental or physical wear, such as training, our body is not capable of manufacturing everything it needs and therefore it becomes essential, requiring supplementation of this amino acid. It is very important since it develops many functions in the body, the most important at the level of physical performance are to promote the natural synthesis of anabolic hormones such as Testosterone. It is the amino acid precursor of nitric oxide, a gas that has a fundamental vasodilator action for muscle congestion and also to combat disorders such as erectile dysfunction. Other lesser-known actions are to act as a liver detoxifier and as a muscle energy, these actions being very important in all those athletes who make very strict low-carbohydrate diets. It is recommended as a pre-workout, take 4 capsules about 30 minutes before training. As a recuperator, take 4 capsules before going to bed. Keep tightly closed in a cool, dry place.