Diarrhea & stool changes; nausea, abdominal pain, dyspepsia, vomiting & flatulence; pseudomembranous colitis. Headache & dizziness. Hypersensitivity reactions in the form of rash, pruritus, urticaria, drug fever & arthralgia. Thrombocytopenia, leukopenia & eosinophilia; changes in liver & renal function tests. Genital pruritus & vaginitis.