Dizziness, headache, somnolence; constipation, nausea, vomiting; pruritus; application site reaction (erythema, edema, pruritus, rash). Anorexia; confusion, depression, insomnia, nervousness, anxiety; tremor; dyspnea; abdominal pain, diarrhea, dyspepsia, dry mouth; rash, sweating; asthenic conditions (including muscle weakness), peripheral edema.