Lenalidomide 10mg Capsule treats an individual with a certain type of blood cancer and lepra reaction. It affects the working of the immune system so known as immunomodulatory medicine. One may get the common side effects of this medicine include nausea, rash, weakness, dizziness, and headache. Take the medicine with or without food but at the same time every day for benefits. It is mandatory for people to use effective birth control method to avoid pregnancy.