Vitamin E supplementation appears to enhance fertility, possibly by decreasing free-radical damage to sperm cells.
Preliminary research suggests that oral SAMe may also increase sperm activity in infertile men.
CoQ10 is a nutrient used by the body to produce energy. While its exact role in the formation of sperm is unknown, even small amounts appear to increase sperm count and motility.
Acetylcarnitine may be a useful for treatment of male infertility caused by low quantities of immobile sperm.
1,500 mcg daily. Vitamin B12 is needed to maintain fertility. Vitamin B12 injections have been shown to increase sperm counts. Men
100 mcg daily. In a study of infertile men with reduced sperm motility, supplementing with selenium significantly increased sperm motility.
1,500 to 3,000 mg daily. A small clinical trial found that healthy men who took dried maca powder had increased sperm counts and enhanced sperm motility.
3 grams daily. L-carnitine appears to be necessary for normal functioning of sperm cells. Supplementing with it may improve sperm motility.
4 grams daily. One preliminary study found that men who took Asian ginseng had an improvement in sperm count and sperm motility.
4 grams daily. The amino acid arginine is needed to produce sperm. Research shows that several months of L-arginine supplementation increases sperm count, quality, and fertility.
60 mg (plus 2 mg of copper, to prevent depletion) daily. Zinc deficiency leads to reduced numbers of sperm and impotence in men. Taking zinc may correct this problem and improve sperm quality.