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What is the dosage amount of children's Benadryl to give a 4 year old child who weighs 30 lbs?

Medically reviewed by Last updated on April 10, 2023.

Official answer


Children’s Benadryl Allergy Liquid (diphenhydramine HCl 12.5 mg/5 mL) should not be used in children between the ages of 2 and 5 years unless directed by a doctor.

For additional information see Diphenhydramine Dosage or Benadryl Dosage Charts for Infants and Children.

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