Viral infection; somnolence, dizziness, ataxia. Pneumonia, resp infection, UTI, infection, otitis media; leucopenia; anorexia, increased appetite; hostility, confusion & emotional lability, depression, anxiety, nervousness, abnormal thinking; convulsions, hyperkinesia, dysarthria, amnesia, tremor, insomnia, headache, paresthesia, hypaesthesia, abnormal coordination, nystagmus, increased/decreased/absent reflexes; visual disturbances eg, amblyopia, diplopia; vertigo; HTN, vasodilatation; dyspnoea, bronchitis, pharyngitis, cough, rhinitis; vomiting, nausea, dental abnormalities, gingivitis, diarrhea, abdominal pain, dyspepsia, constipation, dry mouth or throat, flatulence; facial oedema, purpura, rash, pruritus, acne; arthralgia, myalgia, back pain, twitching; incontinence; impotence; asthenia, malaise.