Pet Medication Dose Calculator
Calculate safe OTC medication dosages for your dog or cat based on their weight. Select a medication, enter your pet's weight, and get an instant dosage recommendation.
Benadryl
Diphenhydramine HCL
Recommended Dose for 40 lb dog
40mg
Tablet Form
1.5 × 25 mg tablets
Liquid Form
16.0 ml (3.2 tsp)
Frequency
Every 8 hours as needed
Common Uses
Always consult your veterinarian before giving any medication to your pet. These dosages are general guidelines based on veterinary references. Individual pets may have conditions that require different dosing. In emergencies, call your vet or the ASPCA Poison Control at (888) 426-4435.
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Store your pet's information and get personalized health recommendations. Coming soon: save multiple pets, track health history, and receive vaccination reminders.