Primaforce DAA, D-Aspartic Acid 100g
One big difference between DAA and other natural testosterone boosters is there is actually scientific data in humans showing it to effectively increase testosterone levels. A study by Topo et al. showed that supplementing with 3 grams of DAA increased circulating luteinizing hormone (LH) levels by 33% and testosterone levels by 42% in men aged 27-37 years old. Further studies need to be done to examine DAA’s affects on estrogen and prolactin levels, but at this time there are no side effects reported with DAA use. DAA is a natural amino acid found in our food supply and produced by the body making it a great tool to naturally increase healthy males’ testosterone production.