Headache, diarrhea, & skin rashes. Pruritus, dizziness, fatigue, constipations, nausea & vomiting, flatulence, abdominal pain, arthralgia & myalgia, urticaria & dry mouth. Isolated cases of photosensitivity, bullous eruption, erythema multiforme, angioedema, & anaphylaxis. CNS effects including occasional insomnia, somnolence, & vertigo; reversible confusional states, agitation, depression, & hallucinations in severely ill patients. Raised liver enzymes, & isolated cases of hepatitis, jaundice & hepatic encephalopathy.