Antihistamine
Benadryl Dosage for Cats
Calculate the safe Benadryl (Diphenhydramine HCL) dose for your cat based on weight. Adjust the slider below for instant results.
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About Benadryl for Cats
Benadryl (generic name: Diphenhydramine HCL) is an over-the-counter medication in the Antihistamine category. It is commonly used for cats to treat:
- Allergic reactions
- Itchiness
- Mild sedation
- Insect stings
- Hives
Dosing Notes
Use cautiously. Consult vet before administering to cats.
Warnings & Contraindications
Warnings
- Use only plain diphenhydramine — avoid combination products with decongestants or pain relievers
- May cause drowsiness, dry mouth, or urinary retention
Do NOT Use If
- Do not use in pets with glaucoma, high blood pressure, or cardiovascular disease without vet approval
Important Notes
- Always verify the product contains ONLY diphenhydramine as the active ingredient
Benadryl Dosage Chart for Cats
| Weight | Dose (mg) | Frequency |
|---|---|---|
| 4 lbs | 4 mg | Every 8-12 hours as needed |
| 6 lbs | 6 mg | Every 8-12 hours as needed |
| 8 lbs | 8 mg | Every 8-12 hours as needed |
| 10 lbs | 10 mg | Every 8-12 hours as needed |
| 12 lbs | 12 mg | Every 8-12 hours as needed |
| 15 lbs | 15 mg | Every 8-12 hours as needed |
| 20 lbs | 20 mg | Every 8-12 hours as needed |
10 lb Cat
Benadryl Dose
Generally safe for cats at this dose
10mg
💊
Tablet Form
1/2 of a 25 mg tablet
💧
Liquid Form
4.0 ml (0.8 tsp)
🕐
Frequency
Every 8-12 hours as needed
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Always consult your veterinarian before giving any medication to your pet. These dosages are general guidelines. Individual pets may require different dosing.