I've heard of an herbal alternative to Viagra for impotence. Does it work and is it safe?
D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008297:Male; D011470:Prostatic Hyperplasia / Q000188:drug therapy
D004365:Drugs, Chinese Herbal