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.
lbs
1 lb200 lbs
Antihistamine
Benadryl
Diphenhydramine HCL
Generally safe for dogs at this dose
Recommended Dose for 40 lb dog
40mg
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Tablet Form
1.5 × 25 mg tablets
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Liquid Form
16.0 ml (3.2 tsp)
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Frequency
Every 8 hours as needed
Common Uses
Allergic reactionsItchinessMild sedationInsect stingsHives
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.