One herb that protects them from damage is pygeum , which is discussed above. It is also a good idea for men who want to reverse their infertility to take plenty of red raspberry leaves. Usually considered a woman's reproductive tonic, raspberry seems to be equally helpful for men. As oats are best when harvested during their fresh, milky stage, your best bet is to use a tincture. You may also derive some benefit by eating oatmeal.
Some plants encourage estrogen production and thus discourage male fertility.
According to Robert C. Kolodny, M.D., reporting in the New England Journal of Medicine in 1974, regular use of marijuana lowers testosterone levels and also decreases sperm production. Finally, tobacco and coffee consumption also seem to cause fertility problems, probably because they impair circulation. Take 1 dropperful twice a day. Aromatherapy Fertility Oil 5 drops rose essential oil 1 ounce vegetable oil Combine ingredients. Massage into the lower abdomen and inner thigh once a day.