Dog Benadryl Dose Calculator
Standard vet-recommended Benadryl (diphenhydramine) dosage for dogs — always confirm with your vet first.
Per dose
30 mg
up to 3× daily — confirm with your vet
Standard 25 mg tablets: 1 tab
Not medical advice. This tool provides general guidance based on common veterinary formulas. Always consult your veterinarian for medical decisions about your pet.
Examples
- 20 lb dog20 mg (1 tab of 25 mg = close)
- 60 lb dog50–60 mg per dose