Last updated: April 13, 2026

Cat Benadryl Dosage Calculator

Based on 3 sources
100 people find this calculator helpful

Table of contents

Benadryl for cats

Benadryl (diphenhydramine) can be given to cats for allergies, motion sickness, and mild sedation. The recommended dose for cats is 0.5–1 mg per pound, every 8–12 hours.

⚠️ Always consult your vet first. Use plain diphenhydramine only — no added decongestants.

Did we solve your problem today?