Clomid is definitely an oral medication that can feel used to trigger ovulation. It works by preventing estrogen receptors at the hypothalamus, and that is an important "hormonal controls building" for the body. When this happens, the hypothalamus is stimulated to release follicle stimulating hormone (FSH), and luteinizing hormone (LH). These are really the organically occurring ovarian stimulants, which prompt ovulation in a typical pattern.