Diphenhydramine (Benadry, etc.) Dosage Table  
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Diphenhydramine (Benadryl, etc.) Dosage Table
Child's weight more than (pounds)20253850100lbs.
Total amount (mg)1012.5192550mg
Liquid 12.5mg/5ml (tsp)¾11½2--tsp
Chewable 12.5 mg--11½24tablets
Capsules 25 mg------12caps

Indications: Treatment of allergic reactions, nasal allergies, hives and itching.

Table Notes:

  • AGE LIMITS: For allergies, don't use under 1 year of age (Reason: it's a sedative). For colds, not recommended at any age (Reason: no proven benefits) and should be avoided if under 4 years old. Avoid multi-ingredient products in children under 6 years of age (Reason: FDA recommendations 10/2008).
  • DOSAGE: Determine by finding child's weight in the top row of the dosage table
  • FREQUENCY: Repeat every 6-8 hours as needed
  • ADULT DOSAGE: 50 mg
  • CHILDREN’S BENADRYL FASTMELTS: Each fastmelt tablet contains the equivalent of 12.5 mg of Diphenhydramine HCL and dosed the same as chewable tablets

Author and Senior Reviewer: Barton D. Schmitt, M.D.

Content Set: Pediatric HouseCalls Online

Pediatric HouseCalls Online