Local inj site reactions, systemic allergic reactions, rash, pruritus, urticaria, erythema multiform, SJS, TEN, abdominal pain, nausea, vomiting, diarrhea, pseudomembranous colitis, reversible thrombocytopenia, eosinophilia, thrombocytopenia, leucopenia, neutropenia, +ve results of Coomb's test, increased serum bilirubin, transaminase, alkaline phosphatase & LDH, headache, paresthesia, convulsion, oral & vag candidiasis.