ADULTS :- 500 MG EVERY 6 HOURLY OR 1 GM EVERY 12 HOURS BY I.V. INFUSION OVER 60 MIN FOR 7-17 DAY.
CHILDREN 10 MG/KG EVERY 6 HOURLY OR 40 MG/KG/DAY IN 3-4 DIVIDED DOSES BY SLOW I.V. INFUSION OVER 60 MIN FOR 7-10 DAYS.
BY MOUTH: ANTIBIOTIC-ASSOCIATED COLITIS, 125 MG EVERY 6 HOURS FOR 7 - 10 DAYS, SEE NOTES ABOVE; CHILD 5 MG/KG EVERY 6 HOURS, OVER 5 YEARS, HALF ADULT DOSE