Benadryl Dosage Calculator for Dogs
Calculate safe Benadryl dosages for your dog
Important: This calculator provides dosage estimates for Benadryl (diphenhydramine) in dogs.
Always consult with your veterinarian before administering any medication to your pet.
Dosage Results
Recommended Dosage
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Tablets per Dose
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Liquid Dosage
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Maximum Daily Dose
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Dosing Schedule
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General Dosage Guidelines
| Weight Range | Dosage (25mg tablets) | Frequency | Notes |
|---|---|---|---|
| Under 10 lbs | 0.5 tablet | Every 8-12 hours | Use with caution |
| 10-20 lbs | 1 tablet | Every 8-12 hours | Standard dosage |
| 21-30 lbs | 1.5 tablets | Every 8-12 hours | Standard dosage |
| 31-50 lbs | 2 tablets | Every 8-12 hours | Standard dosage |
| 51-100 lbs | 3 tablets | Every 8-12 hours | Maximum for large dogs |
| Over 100 lbs | 4 tablets | Every 8-12 hours | Maximum dosage |
Important Information
- Active Ingredient: Diphenhydramine HCl
- Common Uses: Allergies, motion sickness, anxiety, insect bites
- Onset: 15-30 minutes
- Duration: 4-8 hours
- Side Effects: Drowsiness, dry mouth, urinary retention
- Contraindications: Glaucoma, heart disease, pregnancy
- Interactions: May interact with other medications
⚠️ WARNING:
- This calculator is for informational purposes only
- Always consult your veterinarian before giving Benadryl to your dog li>Never exceed recommended dosages
- Monitor for adverse reactions
- Stop medication and contact vet if side effects occur
- Keep medication out of reach of pets and children
- Use only plain Benadryl (diphenhydramine) - avoid combination products