10 MG/KG BODY WT. IN SINGLE DOSE. SEVERE NECATOR AMERICANUS INFECTION :10MG/KG BODY WT. ONCE DAILY FOR 3 DAYS. CHILDREN BELOW 2 YEARS (UNDER 10 KG) : 100 MG A DAY, 2-7 YEARS. (10-20 KG): 200 MG A DAY, 8-14 YEARS.(21-40 KG): 400 MG A DAY, CHILDREN ABOVE 14 YEARS (41-60 KG): 600 MG A DAY, ABVOE 60 KG: 800 MG.