Formestane, formerly sold under the brand name Lentaron among others, is a steroidal, selective aromatase inhibitor which is used in the treatment of estrogen receptor-positive breast cancer in postmenopausal women. The drug is not active orally, and was available only as an intramuscular depot injection.
Formestane, previously sold under the brand name Lentaron, is a type of aromatase inhibitor that targets estrogen receptors in breast cancer cells. It's used to treat estrogen receptor-positive breast cancer in postmenopausal women. Formestane isn't taken orally and was only available as an injection into muscle tissue.