D-aspartic acid

It has recently been discovered that this amino acid is involved in the regulation of the endocrine system, they regulate the release of certain hormones. An important discovery in bodybuilding was the property of D-aspartic acid to interact with certain parts of the hypothalamus, which leads to increased secretion of gonadotropin-releasing hormone, which in turn enhances the production of gonadotropin. The latter also increases the production of testosterone - the main anabolic hormone. In addition, this amino acid enhances the secretion of prolactin and growth hormone. The scientists also found that D-aspartic acid is involved in the release of testosterone and progesterone by the testicles.

A group of 23 people received 3 g of D-aspartate daily for 12 days, while the other 20 people took a placebo (dummy). As a result of the experiment, tests were carried out that determined that testosterone levels increased by an average of 42%, gonadotropin levels increased by 33%.