Clomid is a commonly used fertility drug. It works by encouraging your ovaries to ovulate. It is taken by mouth, and is not an injection. It is commonly the first treatment for infertility, regardless of cause... Polycystic Ovary Syndrome, luteal phase defects, ovulatory problems, etc. It can even help your chances if it the man that has fertility problems, because the sperm have more "targets" when the female takes clomid.