Viral infection; somnolence, dizziness, ataxia; fatigue, fever. Pneumonia, resp infection, UTI, otitis media; leucopenia; anorexia, increased appetite; hostility, confusion & emotional lability, depression, anxiety, nervousness, abnormal thinking; convulsions, hyperkinesias, dysarthria, amnesia, tremor, insomnia, headache, sensations (eg, paresthesia, hypesthesia), abnormal coordination, nystagmus, reflexes (increased, decreased or absent); visual disturbances (eg, amblyopia, diplopia); vertigo; dyspnea, bronchitis, pharyngitis, cough, rhinitis; vomiting, nausea, dental abnormalities, gingivitis, diarrhea, abdominal pain, dyspepsia, constipation, dry mouth or throat, flatulence; facial edema, purpura, rash, pruritus, acne; arthralgia, myalgia, back pain, twitching; incontinence; impotence; peripheral or generalized edema, abnormal gait, asthenia pain, malaise, flu syndrome, w/drawal reactions, chest pain; decreased WBC, wt gain; accidental injury, fracture, abrasion.