Dog Benadryl Dosage Calculator
Calculate the safe Benadryl (diphenhydramine) dosage for your dog based on weight. Always consult your veterinarian before first use.
Always consult your veterinarian before giving Benadryl to your dog for the first time. This calculator provides general dosing guidelines only. Your vet needs to confirm it's safe for your specific dog based on their health conditions and medications.
How This Calculator Works
Understanding Benadryl for Dogs
Benadryl (diphenhydramine) is an antihistamine that can be safely used in dogs when prescribed by a veterinarian. It works by blocking histamine receptors, reducing allergic reactions, itching, and inflammation. The standard veterinary dosing guideline is 1 mg per pound of body weight, given every 8-12 hours.
Why Veterinary Consultation is Critical
While Benadryl is generally safe, it's not appropriate for all dogs. Dogs with certain medical conditions (glaucoma, heart disease, seizures) can have serious adverse reactions. Additionally, Benadryl can interact with many common medications. Your veterinarian needs to review your dog's full medical history before approving Benadryl use.
Important Product Information
- Use ONLY plain Benadryl: Check the label - it should contain ONLY diphenhydramine
- Avoid combination products: Never use Benadryl-D, Benadryl Plus, or any product with additional active ingredients
- No liquid formulations with alcohol: Some liquid forms contain alcohol which is toxic to dogs
- Standard tablet is 25mg: This is the most common and easiest to dose
When to Call Your Vet
If symptoms don't improve after 2-3 doses, if they worsen, or if your dog shows any abnormal behavior after taking Benadryl, contact your veterinarian immediately. Some conditions that look like allergies may actually be more serious and require different treatment.
For more pet medication calculators and health tools, visit PaceCalc Pro.