DAA – clinically tested D-aspartic acid which naturally occurs in our endocrine cells, adrenal glands, pancreas, thyroid, parathyroid and largely in the pituitary gland and testes. The participation of DAA in the mechanisms regulating testosterone production supporting the development of muscle mass. Zinc – zinc is necessary for the proper synthesis of protein and proper division of cells. Additionally, it helps to maintain the proper testosterone level in the bloodstream, and helps maintain the proper fertility and reproductive functions. Content Per Capsule Per 1 and 6 Capsules L-Aspartic acid 500 mg / 3000 mg Tribulus terrestris fruit extract 166.7 mg / 1000 mg N-Acetyl L-Carnitine 166.7 mg / 1000 mg Magnesium 50 mg / 300 mg Zinc 3.3 mg / 20 mg Vitamin B6 1.17 mg / 7 mg Ingredients: L-Aspartic acid, N-Acetyl L-Carnitine, Tribulus Terrestris fruit extract (standardized to 40% saponins), capsule shell [gelatin, colour (titanium dioxide)],Magnesium oxide, Maltodextrin, Anti-caking agent (Silicon dioxide), Zinc oxide,Anti-caking agent (Calcium salts of orthophosphoric acid), Pyridoxinehydrochloride. Instructions for use: As a dietary supplement, take 1-6 capsules daily.