THE USUAL ADULT DOSE :- 0.5 TO 1 GM EVERY 4-6 HOURS UP TO A MAXIMUM OF 4 GM DAILY. CHILDREN UNDER 3 YEARS :- 10 MG/KG/BODY WT., 3 MONTHS TO 1 YEAR:- 60-120 MG, 1 TO 5 YEARS:- 120-250 MG, 6 TO 12 YEARS :- 250-500 MG EVERY 4-6 HOURS.
BY INTRAVENOUS INFUSION OVER 15 MINUTES, ADULT AND CHILD OVER 50 KG, 1 G EVERY 4 - 6 HOURS, MAX. 4 G DAILY; ADULT AND CHILD 10 - 50 KG, 15 MG/KG EVERY 4 - 6 HOURS, MAX. 60 MG/KG DAILY; NEONATE AND CHILD LESS THAN 10 KG, 7.5 MG/KG EVERY 4 - 6 HOURS, MAX. 30 MG/KG DAILY
BY RECTUM : ADULT AND CHILD OVER 12 YEARS 0.5 - 1 G UP TO 4 TIMES DAILY, CHILD 1 - 5 YEARS 125 - 250 MG, 6 - 12 YEARS 250 - 500 MG