Medicine Name: Lenalid 25 Capsule. Composition: Lenalidomide (25mg). Side Effects: Headache Nausea Rash Breathlessness Dizziness Fatigue Decreased white blood cell count neutrophils Joint pain Itching Diarrhea Low blood platelets Peripheral edema Cough Back pain Upper respiratory tract infection Decreased appetite Nasopharyngitis inflammation of the throat and nasal passages.