Clomifene (INN) or clomiphene (USAN) (trademarked as Androxal, Clomid and Omifin) is a selective estrogen receptor modulator (SERM) that has become the most widely prescribed drug for ovulation induction to reverse anovulation or oligoovulation. ==Use in anovulation== Clomifene is useful in those who are infertile due to anovulation or oligoovulat...