Biology

Benadryl Dosage Calculator for Cats

General Benadryl (diphenhydramine) reference. Always confirm with your vet first.

Calculated Output

Dose per administration (mg) 10

Up to (2–3× daily) (mg/day) 30

Formula: dose ≈ 1 mg per pound of body weight

Step-by-Step Breakdown

1. Values used:

2. Cat weight = 10

4. Dose per administration = 10mg

5. Up to (2–3× daily) = 30mg/day

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The math behind it

A widely cited reference dose is about 1 mg of diphenhydramine per pound of body weight, given up to 2–3 times a day. Your vet may adjust this.

A 30 lb dog → about 30 mg per dose.

Is this medical advice?

No — it's a general reference. Dosing, suitability and frequency must be confirmed by your vet.