Hypersensitivity reactions; urticaria, morbiliform eruptions, pruritus, +ve Coombs' tests, serum-sickness like reactions; SJS, TEN, anaphylaxis; GI symptoms; eosinophilia, thrombocytopenia; transient hepatitis, cholestatic jaundice; CNS effects; genital pruritus, vaginitis, slight elevations of AST, ALT, alkaline phosphatase, blood urea or serum creatinine, hematuria or pyrexia or pyuria.