Tamoxifen

Pronounced tah-MOX-i-fen

Brand names: Nolvadex

Type: Selective estrogen receptor modulator (breast cancer medicine) · All Women's Health Medicines

What Tamoxifen is used for

  • Treating breast cancer
  • Reducing breast cancer risk in high-risk women
  • Reducing recurrence after early breast cancer surgery

Common side effects

  • Hot flashes
  • Vaginal discharge or bleeding
  • Leg cramps
  • Nausea
  • Mood changes

Important cautions

  • Raises the risk of blood clots and of womb lining cancer — unusual vaginal bleeding must be reported promptly
  • Can harm an unborn baby — effective non-hormonal contraception is used during treatment

How it comes

Tablets, liquid. This guide lists forms only — it never lists strengths or doses.

Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.