Exemestane
Aromasin (exemestane) is a prescription medication classified as an aromatase inhibitor used primarily to treat hormone receptor-positive breast cancer in postmenopausal women. It works by reducing estrogen production in the body, which can slow or stop the growth of certain breast cancers that need estrogen to grow. This medication is typically used after surgery or when initial treatments have not fully controlled the disease.
Aromasin is an aromatase inhibitor used to treat hormone receptor-positive breast cancer in postmenopausal women by reducing estrogen levels.
Key facts at a glance
- RxNorm
- 262105
- Generic
- Aromasin
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Aromasin is primarily indicated for the treatment of hormone receptor-positive breast cancer in postmenopausal women. It may be used as initial treatment after surgery (adjuvant therapy) or when other treatments have not been effective. It is specifically designed for cancers that grow in response to estrogen.
Aromasin belongs to a class of drugs called aromatase inhibitors. It works by blocking the aromatase enzyme, which is responsible for converting androgens into estrogens in postmenopausal women. By reducing estrogen production, the medication deprives estrogen-dependent cancer cells of the hormone they need to grow and multiply.
Aromasin should only be used by postmenopausal women as it works differently in premenopausal women. Common side effects may include hot flashes, joint pain, and bone thinning. Patients should inform their healthcare provider about all medications they are taking, as drug interactions can occur. Treatment should only be initiated and monitored by a qualified oncologist.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed September 2, 2026. · Read our editorial policy