Herbal remedies known as “ginsengs” are some of the most popular herbal supplements in the United States. There are several types of ginsengs available, the most commonly used being Panax ginseng, also referred to as Korean or Asian ginseng. Panax ginseng has been used in traditional Chinese medicine for thousands of years to improve mental and physical vitality. Other uses include improving exercise performance, immune function, reducing fatigue, and reducing male infertility.