Benadryl & Zyrtec
Dosages for Benadryl (Diphenhydramine) for different weights
Benadryl can be given every 6 hours. Consult your physician for children under 12 months of age.
| Weight (lbs) | Age (years) | Suspension (12.5mg/5 ml) | Chewable (12.5 mg tab) | Fastmelts (12.5 mg tab) | Tab/Cap (25 mg) |
|---|---|---|---|---|---|
| 12-19 lbs | 1 - 1 1/2 yrs | 2.5 ml - 1/2 tsp | - | - | - |
| 20-26 lbs | 1 1/2 - 2 yrs | 3.75 ml = 3/4 tsp | - | - | - |
| 27-39 lbs | 2 - 4 yrs | 5 ml = 1 tsp | 1 tab | 1 tab | - |
| 40-52 lbs | 5 - 6 yrs | 7.5 ml = 1 1/2 tsp | 1 1/2 tab | 1 1/2 tab | - |
| 53-67 lbs | 7 - 8 yrs | 10 ml = 2 tsp | 2 tabs | 2 tabs | 1 tab/cap |
| 68-79 lbs | 9 - 10 yrs | 10-12.5 ml = 2-2 1/2 tsp | 2 - 2 1/2 tabs | 2 tabs | 1 tab/cap |
| 80-95 lbs | 11 -12 yrs | 10-15 ml = 2-3 tsp | 2 - 3 tabs | 2 -3 tabs | 1 tab/cap |
| 96+ lbs | 12+ yrs | 10-20 ml = 2-4 tsp | 2 - 4 tabs | 2 - 4 tabs | 1-2 tab/cap |
When to Use: Treatment of allergic reactions, nasal allergies, hives and itching.
CAUTION! Benadryl can cause significant sleepiness or an unexpected hyperactivity reaction in some children. Dosing by weight is most accurate. Consult your physician for any questions.
Customized from Itching Allergies v0.1 7/8/2025
Dosages for Zyrtec (Cetirizine) for different weights
| 6 mons - 2 yrs | 2-5 yrs | 6+ yrs | |
|---|---|---|---|
| Chilren's Liquid (1 mg/1 ml) | 2.5 ml once daily | 2.5-5 ml once daily | 5-10 ml once daily |
| Children's Chewable (5 mg tabs) | - | 1 tab once daily | 2 tabs once daily |
| Children's Chewable (10 mg tabs) | - | - | 1 tab once daily |
| Adult (10 mg tabs) | - | - | 1 tab once daily |
When to Use: Treatment of allergic reactions, nasal allergies, hives and itching.
Customized from Itching Allergies v0.1 7/8/2025