The most common side effects may include the following: Abdominal pain, Abnormal gait, Agranulocytosis, Anaphylaxis, Angioedema, Ataxia, Blurred vision, Cognitive dysfunction, Constipation, Cough, Decreased hematocrit, Decreased hemoglobin, Decreased T3 level, Decreased T4, Decreased visual acuity, Depression, Diarrhea, Diplopia, Dizziness, DRESS syndrome, Drowsiness, Dysarthria, Equilibrium disturbance, Falling, Fatigue, Gastritis, Headache, Hypercholesterolemia, Hypertension, Hypochloremia, Hyponatremia, Increased creatine phosphokinase, Increased LDL cholesterol, Increased serum bilirubin, Increased serum transaminases, Increased serum triglycerides, Insomnia, Leukopenia, Megaloblastic anemia, Memory impairment, Nausea, Nystagmus, Pancytopenia, Peripheral edema, Prolongation P-R interval on ECG, Severe dermatological reaction, SIADH, Skin rash, Stevens-Johnson syndrome, Thrombocytopenia, Toxic epidermal necrolysis, Tremor, Urinary tract infection, Vertigo, Vomiting, Weakness