1. Effective for breast cancer treatment: Exemestane is an aromatase inhibitor, which works by reducing the production of estrogen in postmenopausal women. It is used as adjuvant therapy for the treatment of early-stage hormone receptor-positive breast cancer in postmenopausal women, and it may help reduce the risk of cancer recurrence.
2. Well-tolerated: Exemestane is generally well-tolerated by most patients, with common side effects including hot flashes, fatigue, joint pain, and mild nausea. These side effects are usually mild and temporary.

Cons:

1. Potential side effects: Like any medication, Exemestane can have side effects, which may include hot flashes, fatigue, joint pain, mood changes, bone loss, and increased cholesterol levels. In rare cases, more serious side effects such as liver toxicity or allergic reactions may occur.
2. Hormonal changes: Exemestane reduces the production of estrogen in the body, which can result in hormonal changes and potential adverse effects on bone health, cholesterol levels, and mood.