Aromasin’s active ingredient (exemestane) has a half-life of around 24 hours. This means it takes 24 hours for half the drug to leave your body.
Aromasin’s mechanism of action (how it works) is blocking the effects of a hormone called estrogen. This action prevents or slows breast cancer from growing or spreading.
If you have other questions about the half-life of Aromasin or how it works, talk with your doctor or pharmacist.