About imlunestrant tosylate
Estrogen receptor antagonist
Used for
- Treats advanced or metastatic estrogen receptor-positive, HER2-negative breast cancer with an ESR1 mutation after disease progression.
Usual adult dose
400 mg by mouth once daily with food; dose may be increased to 800 mg if prescribed.
Common side effects
- Nausea
- Fatigue
- Diarrhea
- Decreased appetite
Important warnings
- May harm an unborn baby; use effective contraception during treatment and for one week afterward.
- Check for drug interactions before starting new medicines or supplements.
- Monitor for changes in blood counts and liver tests.
Pregnancy
Can cause fetal harm; avoid during pregnancy.
Breastfeeding
Do not breastfeed during treatment and for one week after the last dose.
Interactions
- Strong or moderate CYP3A inhibitors or inducers can change imlunestrant levels.
- Avoid grapefruit and grapefruit juice, which may affect medicine levels.
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 It may be incomplete or out of date.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.