Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Exemestane
Medically reviewed by Min Clinic Staff | Updated: January 2026
Exemestane: An oral antiestrogen. Exemestane inhibits the enzyme aromatase in the adrenal glands that produces the estrogens (estradiol and estrone) and thereby lowers their levels. It works by decreasing the amount of estrogen the body makes. This can slow or stop the growth of many types of breast cancer cells that need estrogen to grow. Brand name: Aromasin.
See also: Aromatase inhibitor.