so this is the problem I can't figure out. I think the answer is: No, it is unsafe dose because 60 mg q.8h would be a total of 180 mg, and using the 15 mg/kg/day formula the max for this kid would be 109 mg.... but what is this 1.5g/day max? is that the max dose for the drug? Order: Kantrex 60 mg IV q. 8h for a child who weighs 16 lbs. The recommended dose for adults and children is 15 mg/kg/day in 2-3 divided doses, not to exceed 1.5 g/day. Supply: Kantrex 75 mg/2 mL. Is this dose safe? If so how much do you administer?