Megestrol acetate, commonly known as Megace®, is a man-made substance called a progestogen which is similar to the female hormone progesterone. It is a type of drug known as hormonal therapy.
Femara® (letrozole tablets) is approved for the adjuvant (following surgery) treatment of postmenopausal women with hormone receptorñpositive early stage breast cancer (or ESS). It is a reversible aromatase inhibitor.
AROMASIN® (exemestane tablets) is a prescription medicine for the adjuvant treatment of postmenopausal women with estrogen-receptor positive early breast cancer (or ESS in our case). It is an irreversible steroidal aromatase inhibitor.