Ginseng is a short, slow-growing plant with fleshy roots and considered one of the most popular herbal remedies. There are many types of this herb, but the most popular are American ginseng and Asian ginseng. American and Asian ginseng vary in their concentration of active compounds and effects on the body, but both are believed to boost energy, lower blood sugar and cholesterol levels, reduce stress, promote relaxation, treat diabetes, and manage sexual dysfunction in men.