Diphenhydramine (Benadryl) Dosing Chart

May use every 6 hours as needed

Wt Diphenhydramine
Liquid
Suspension
(12.5 mg/5 ml)
Diphenhydramine
Chewable
Tablets
(12.5 mg)
Diphenhydramine

Tablets
(25 mg)
Diphenhydramine

Capsule
(25 mg)
20-24 lbs 4 ml N/A N/A N/A
25-37 lbs 5 ml 1 tab 0.5 tab N/A
38-49 lbs 7.5 ml 1.5 tab 0.75 tab N/A
50-99 lbs 10 ml 2 tabs 1 tab 1 tab
100+ lbs N/A 4 tabs 2 tabs 2 tabs