Ginseng (Panax ginseng) has a long history of use in traditional medicine, particularly in East Asia, for enhancing vitality and sexual function. In recent years, there has been increasing scientific interest in its potential effects on the male reproductive system. Several clinical studies and meta-analyses indicate that Panax ginseng supplementation may improve certain aspects of male reproductive health, including erectile function and, to a lesser extent, sperm quality and libido.

The main active compounds in Panax ginseng, known as ginsenosides, are thought to exert their effects by enhancing nitric oxide production, which facilitates vasodilation and improved blood flow. This mechanism may explain the observed improvement in erectile function in some studies. For example, a 2008 systematic review in the British Journal of Clinical Pharmacology found that ginseng was superior to placebo in improving erectile dysfunction, though the quality and size of the studies varied. There is also preliminary evidence suggesting a positive impact on sperm motility and count, but results are inconsistent and larger, high-quality trials are needed.

While the evidence is promising, it is not uniformly strong, with some studies showing modest or no effect. Safety profiles are generally favorable when used in recommended doses. In summary, Panax ginseng has both traditional use and moderate scientific support for its role in supporting the male reproductive system, earning a mid-range evidence rating.