Suffix Drug -nidazole Metronidazole, Tinidazole , Ornidazole , Action /category M/A Anti- diarrhoeal Antiprotozoal Converted to reduction products that interact w/DNA to cause destruction of helical DNA structure & strand leading to protein synthesis inhibition & cell death in susceptible organism. Disease Pneumonia, Giardiasis, Peptic ulcer disease-PUD, Peritonitis, H pylori infection, Septicemia, Rosacea, Endometritis , Lung abscess, Empyema, Bone & joint infection, Surgical prophylaxis, Amoebiasis , Bacterial vaginosis , Balantidiasis , Blastocystis hominis infection, Trichomoniasis , Dental infection, Gingivitis, Colitis, Fungating tumours , Leg ulcer & pressure sore, Diverticulitis, Diabetic foot ulcer, Endocarditis, Meningitis & brain abscesses,