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Diphenhydramine (Benadryl) Dosage Table
| Diphenhydramine Dosage Table (Benadryl) |
| Child's weight more than (pounds) |
20 |
25 |
38 |
50 |
100 |
lbs. |
| Total amount (mg) |
10 |
12.5 |
19 |
25 |
50 |
mg |
| Liquid 12.5mg/5ml (tsp) |
¾ |
1 |
1½ |
2 |
-- |
tsp |
| Chewable 12.5 mg |
-- |
1 |
1½ |
2 |
4 |
tablets |
| Capsules 25 mg |
-- |
-- |
-- |
1 |
2 |
caps |
Indications: For itching, allergic reactions, and hives. Also can be used as a cough suppressant.
Table Notes:
- AGE LIMITS: For allergies, don't use under 1 year of age (Reason: it's a sedative). For colds, routine use not indicated (no efficacy) at any age and should be avoided if under 2 years old. Avoid multi-ingredient products in children under 6 years of age. (Reason: AAP recommendations 10/2007).
- 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
Disclaimer: This information is not intended be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.
Author and Senior Reviewer: Barton D. Schmitt, M.D.
Last Reviewed: 8/1/2007
Last Revised: 8/24/2007
Content Set: Pediatric HouseCalls Online
Copyright 1994-2007 Barton D. Schmitt, M.D.
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