How Much Palbociclib Daily Dose for Breast Cancer Cycle

Palbociclib is a kind of inhibitor that goes after CDK4/6, these are big players in how cells divide, especially in a type of breast cancer that’s HR-positive and HER2-negative. It messes with cancer cell growth by blocking these kinases. You got capsules in three sizes: 75 mg, 100 mg, and the biggest one, 125 mg.

The doc usually says to take the 125 mg pill once a day for about 21 days out of every 28 days. The med comes in bottles with 21 caps, so you do three doses per bottle, which gives you the regular 125 mg dose every day for three weeks.