Palbociclib is a CDK4/6 inhibitor used to treat HR /HER2breast cancer. It’s all about stopping the cell cycle from moving forward. You can get it in capsule form, with different strengths—75, 100, or 125 milligrams.
The usual dose they suggest is 125 milligrams, once a day, for 21 days every 28 days. Each bottle has 21 capsules, just to make it easy for you to keep track.