PROFERT is a food supplement being a source of L-arginine, L-carnitine, coenzyme Q10, zinc, selenium, folic acid and vitamins E, C, B6, B12 and D3. Selenium contained in PROFERT contributes to normal spermatogenesis and to the normal thyroid function. Zinc, vitamin D, folate and vitamin B12 have a role in the process of cell division. Moreover, zinc with vitamins C and E contribute to the protection of cells from oxidative stress. Folate and vitamins, B6, B12 and C contribute to the reduction of tiredness and fatigue. Vitamins B6 and B12 contribute to normal red blood cell formation, while folate contributes to normal blood formation. What is more, zinc contributes to normal DNA synthesis, to normal fertility and reproduction, to normal protein synthesis and to the maintenance of normal testosterone levels in the blood. Vitamin D contributes to the maintenance of normal muscle function, folate contributes to normal amino acid synthesis and vitamin B6 contributes to the regulation of hormonal activity.