About anastrozole
Aromatase inhibitor
Used for
- Treatment of hormone receptor-positive breast cancer in postmenopausal women.
- Adjuvant treatment after surgery, or treatment of advanced disease.
Usual adult dose
1 mg by mouth once daily for breast cancer.
Common side effects
- Hot flushes
- Joint pain or stiffness
- Bone thinning and fractures
- Nausea or headache
Important warnings
- For postmenopausal women; it is not suitable before menopause.
- Can reduce bone density and increase fracture risk.
- Seek urgent care for signs of a serious allergic reaction.
- May cause harm during pregnancy.
Pregnancy
Avoid; it may harm an unborn baby. Pregnancy must be excluded before treatment.
Breastfeeding
Do not breastfeed during treatment; the effects on infants are unknown.
Interactions
- Tamoxifen and estrogen-containing medicines can reduce anastrozole’s effect.
- Check before using other medicines or supplements, especially hormone products.
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 It may be incomplete or out of date.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.