Antihistamine · For Cats · 8 lb
How much Benadryl for a 8 lb cat?
A 8 lb cat (3.6 kg) should receive approximately 7.3 mg of Benadryl per dose, given every 8-12 hours.
This dosage information is for educational purposes only. Always consult your veterinarian before giving any medication to your pet. Dosages may vary based on your pet's health conditions, other medications, and individual factors.
Content reviewed by licensed veterinarians. Sourced from Plumb's Veterinary Drug Handbook and the Merck Veterinary Manual.
Dosage · 8 lb cat
Benadryl dose for a 8 lb cat
Low Dose
3.6
mg
Standard
7.3
mg
Max Safe
14.5
mg
Frequency
every 8-12 hours
Weight in kg
3.6 kg
Always confirm with your veterinarian before administering medication. These calculations are estimates based on published veterinary pharmacology references.
Other Weights
Benadryl for a different size cat
FAQ · 8 lb cat
Questions about Benadryl for a 8 lb cat
How much Benadryl for a 8 lb cat?
What is the safe dose range of Benadryl for a 8 lb cat?
How often can I give Benadryl to a 8 lb cat?
Need a different weight?
Use the calculator on the main Benadryl page for any exact weight, or read the full dosage chart and safety information.
Full Benadryl dosage guide →Sources · 09
Sources & references
The dosage information on this page is compiled from the following veterinary and pharmaceutical references:
- Plumb's Veterinary Drug Handbook — the standard veterinary pharmacology reference used by veterinarians worldwide.
- Merck Veterinary Manual — a trusted, peer-reviewed resource for veterinary professionals and pet owners.
- DailyMed (FDA Drug Labels) — official FDA-approved drug labeling and prescribing information for Diphenhydramine.
Read more about our methodology and how we calculate dosages.