Selenium contributes to normal spermatogenesis. zinc contributes to normal fertility and reproduction and to the maintenance of normal testosterone levels in the blood.recommended use: take once a day 3 tablets with suf cient water. do not take more than 3 tablets within 24 hours. do not exceed the recommended serving.this is a herbal, vitamin, mineral and amino acid preparation. a food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. keep out of reach of children. store in a cool, dry place. consult your physician before conco ant use of anticoagulants.contributes to fertilitycontributes to reproductionmaintenance of normal testosterone levels.