About tamoxifen citrate
Selective estrogen receptor modulator
Used for
- Treats and helps prevent some breast cancers
- Reduces breast cancer risk in people at high risk
Usual adult dose
Usually 20 mg once daily for breast cancer; prevention dosing is typically 20 mg daily.
Common side effects
- Hot flashes
- Nausea
- Vaginal discharge or bleeding
- Fatigue
Important warnings
- May increase risk of blood clots, stroke, and uterine cancer
- Seek prompt assessment for unusual vaginal bleeding or symptoms of a blood clot
- Can harm a fetus; pregnancy should be avoided during treatment and for two months afterward
Pregnancy
Avoid during pregnancy; it may harm the fetus. Effective contraception is needed during treatment and for two months after stopping.
Breastfeeding
Breastfeeding is not recommended during treatment and for three months after stopping.
Interactions
- Warfarin and other coumarin anticoagulants
- Strong CYP2D6 inhibitors, such as paroxetine or fluoxetine
- Rifampin and other medicines that alter tamoxifen metabolism
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.