--Epalrestat: Diarrhea, anorexia, nausea, abdominal pain, rash, headache, dizziness, abnormal liver function tests Methylcobalamin/Mecobalamin: Diarrhea, rash, hot sensation, anorexia Pregabalin: Dizziness, sleepiness, decreased concentration, blurred vision, dry mouth, edema, weight gain, abnormal thinking, constipation, gait disturbance, euphoria, confusion, irritability, sexual dysfunction