Lenalidomide is an anti-cancer medication. It functions by boosting the immune system, which then indirectly helps fight cancer cells. It stops the development of new blood vessels inside the tumor. Additionally, it limits the production of chemical messengers that promote the development of cancer cells. Lenalidomide is also used to treat anemia (a lack of red blood cells) in patients with myelodysplastic syndrome caused by an abnormal chromosome.

Lenalidomide is also used to treat anemia (a lack of red blood cells) in patients with myelodysplastic syndrome caused by an abnormal chromosome. Some of the negative effects of Lenalidomide tablets are Diarrhea, stomach pain, nausea, loss of appetite, constipation, dizziness, dry skin, dry mouth, or trouble sleeping.