Somnolence, dizziness, ataxia, fatigue. Peripheral edema, vasodilation; headache, abnormal thinking, amnesia, depression, dysarthia, nervousness, abnormal coordination, twitching, hyperesthesia; pruritus, rash; hyperglycemia; diarrhea, nausea/vomiting, abdominal pain, xerostomia, constipation, wt gain, dyspepsia, flatulence, dry throat, dental abnormalities, appetite stimulation; impotence; leukopenia, decreased WBC; tremor, weakness, abnormal gait, back pain, myalgia, fracture; nystagmus, diplopia, blurred vision, conjunctivitis; otitis media; rhinitis, pharyngitis, cough.