About fulvestra nt
Estrogen receptor antagonist
Used for
- Hormone receptor-positive advanced or metastatic breast cancer
- Used alone or with other targeted cancer medicines
Usual adult dose
500 mg by intramuscular injection into the buttocks on days 1, 15, and 29, then once monthly.
Common side effects
- Injection-site pain
- Hot flushes
- Nausea and tiredness
- Joint, muscle, or bone pain
Important warnings
- Liver impairment may require a lower dose
- Bleeding disorders or low platelets increase injection-related bleeding risk
- Injection can occasionally cause nerve injury
- Serious allergic reactions can occur
Pregnancy
Can harm an unborn baby. Effective contraception is required during treatment and for one year after the last dose.
Breastfeeding
Do not breastfeed during treatment or for one year after the last dose.
Interactions
- Blood thinners increase bleeding risk from intramuscular injections
- May interfere with some laboratory estrogen measurements
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 It may be incomplete or out of date.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.