Lenalidomide’s mainly used to treat cancer, like multiple myeloma and things like that. It messes with both the good and the bad cells. You can get Lenalidomide in caps, from as low as 2.5 mg up to a big 25 mg dose.
You’re supposed to take the 25 mg cap everyday, starting on Day 1 and wrapping up after 3 weeks, in those 28-day chunks. Each bottle comes with 21 of the little 25 mg pills.