Diphenhydramine

Question 1

Benadryl (Diphenhydramine) Adult Dosage

Benadryl (Diphenhydramine) Adult Dosage

Answer 1

• 50 mg slow IV/IO/IM/or PO 2 tablets

Question 2

Benadryl (Diphenhydramine) Ped Dosage

Answer 2

• Greater than 8 yo: 25 mg by mouth (one 25mg tablet) or oral suspension (2x 12.5mg/5mL), 1-2 mg/kg slow IV/IO/IM (not to exceed 50 mg)
• 1-8 yo: 1 mg/kg (12.5 mg/5mL)