CDAD & colitis/pseudomembranous colitis frequently accompanied by fever & leukocytosis. Generalized mild to moderate morbilliform-like & vesiculobullous rashes, urticaria, pruritus, fever, hypotension, anaphylactoid reactions. Jaundice, hepatic damage, transient increases in serum bilirubin, alkaline phosphatase, ALT, AST, BUN. Leukopenia, eosinophilia, thrombocytopenia, agranulocytosis, leukocytoclastic angiitis.