Tab Trichomoniasis, amoebiasis, giardiasis, acute ulcerative gingivitis. Treatment & prevention of post-op anaerobic infections. Amoebic dysentery & other intestinal amoebic disease 200 mg tid for 7 consecutive days or 2 g as a single dose or 800 mg morning & 1.2 g evening for 2 days. Amoebic dysentery & other intestinal amoebic disease Adult 500-750 mg tid for 5-10 days. Childn 11.6-16.7 mg/kg body wt tid for 10 days. Inj Treatment & prevention of infections caused by susceptible anaerobic bacteria Adult & childn >12 yr Loading dose of 15 mg/kg infused over 1 hr, maintenance: 7.5 mg/kg infused over 1 hr 6-8 hrly.