Lenalidomide is a medicine that helps with immune system stuff and treats things like multiple myeloma and myelodysplastic syndromes. It’s meant to mess with both the immune cells and the cancer cells. You can get it in capsules that go from 2.5 mg up to 25 mg.
The doc usually suggests taking 25 mg every day from the first to the 21st day of a 28-day thing. Each box has 21 capsules in it.