Diphenhydramine (Benadryl, etc. Dosage Table
| Diphenhydramine (Benadryl, etc.) Dosage Table |
| Child's weight (pounds) |
20-24 |
25-37 |
38-49 |
50-99 |
100+ |
lbs. |
| Liquid 12.5mg/5ml (tsp) |
¾ |
1 |
1½ |
2 |
-- |
tsp |
| Chewable 12.5 mg |
-- |
1 |
1½ |
2 |
4 |
tablets |
| Tablets 25 mg |
-- |
½ |
½ |
1 |
2 |
tablets |
| Capsules 25 mg |
-- |
-- |
-- |
1 |
2 |
caps |
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 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
- MEASURING the DOSAGE: Syringes and droppers are more accurate than teaspoons. If possible, use the syringe or dropper that comes with the medication. If you use a teaspoon, it should be a measuring spoon. Regular spoons are not reliable. Also, remember that 1 level teaspoon equals 5 ml and that ½ teaspoon equals 2.5 ml.
Author and Senior Reviewer: Barton D. Schmitt, M.D.
Content Set: Pediatric HouseCalls Symptom Checker
Pediatric HouseCalls Symptom Checker |