Approximately, 30-80% of male infertility cases are caused by oxidative stress and decreased level of seminal total antioxidant capacity.  Supplements such as CoQ10 and alpha-tocopherol significantly improve sperm count. Other supplements such carnitine has positive effects on sperm motility and morphology. Simultaneous administration of vitamin E and vitamin C reduces the sperm DNA damage, in general, antioxidant supplementation improved the number, motility, morphology and sometimes DNA integrity of sperm. Many herbs used in TCM are high in micro-nutrient and contain high level of anti-oxidant to improve sperm morphology and motility.