Clomid is the brand name of clomiphene, a drug that doctors prescribe to treat infertility in women and in men. Clomid stimulates hormones in your brain to get your ovaries to release one or several eggs each month. For men, Clomid prompts the pituitary gland to produce a hormone that tells the testicles to produce testosterone, which could produce more sperm. Clomid is generally well-tolerated, according to Drugs.com. Any side effects are usually mild and stop once you discontinue the drug.