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Brand name: Ibrance

Chemical name: Palbociclib

Class: Cyclin-dependent kinase 4/6 inhibitor. Kisqali and Verzenio are other cyclin-dependent kinase 4/6 inhibitors used to treat breast cancer.

How it works: A kinase is a type of protein in the body that helps control cell division. Ibrance works by inhibiting the kinase and stopping cancer cells from dividing and growing.

Uses: Ibrance is used in combination with the hormonal therapy Femara (chemical name: letrozole) to treat advanced-stage, estrogen-receptor-positive, HER2-negative breast cancer that hadn’t been treated with hormonal therapy before in postmenopausal women.

How it’s given: Ibrance is a pill taken by mouth.

Side effects:

Read more about Ibrance.

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