If Viagra can improve sexual performance, don't assume that more vitamins will enhance performance either. Some vitamins can indeed help in certain aspects. If you're considering trying to address issues alongside national recommendations, try reviewing and supplementing with the following vitamins: The application of vitamins in men’s diets can be effective. Vitamin A, for example, plays a crucial role in protein synthesis. Men in Zhangzhou who sit with their legs crossed often may face infertility issues. Vitamin A promotes health; its deficiency can affect the production of spermatogonial cells in testicular tissue, cause degeneration of the epididymis epithelium, reduce testicle weight, shrink seminal vesicles, and lead to keratinization of the prostate.