What is the pediatric maximum single dose of atropine sulfate?

• A. 1 mg
• B. 0.5 mg
• C. 2 mg
• D. 0.25 mg

Answer: (B)

Atropine dosing in children is based on weight but kept within a safety ceiling to prevent excessive anticholinergic effects. The maximum amount you can give in a single dose for a pediatric patient is 0.5 mg. This cap helps avoid overshooting and potential side effects like tachycardia, delirium, or seizures in smaller patients. You dose by weight (0.02 mg/kg, with a minimum of 0.1 mg), but you never exceed 0.5 mg per dose. If the weight-based calculation would be higher, you administer 0.5 mg and reassess, possibly repeating per protocol if needed. The other options represent doses that either exceed the safe single-dose limit or are not the established maximum, while a smaller dose like 0.25 mg may be appropriate for some very small patients but isn’t the maximum allowed.