So, Palbociclib is this CDK4/6 inhibitor that’s all about treating HR /HER2 breast cancer. It’s mainly used to stop the cell cycle in its tracks. They got this pill thingy coming in different sizes: 75 mg, 100 mg, and a big one at 125 mg.
Now, you’re looking at a 125 mg dose taken once a day, but for just 21 days in every 28-day cycle. Each cycle, you get a bottle with 21 of those 125 mg capsules.