Guides
Pet medication guides.
Plain-language answers on dosing common medications safely — written to pair with our calculators.
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Benadryl Dosage Chart for Dogs (by Weight)
A printable Benadryl dosage chart for dogs based on the standard 1 mg per pound rule, from 5 lb to 100 lb — plus how to dose with tablets vs liquid.
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How Much Benadryl Can I Give My Dog?
The standard dog Benadryl dose is 1 mg per pound, every 8–12 hours. Here's how to calculate it, which product is safe, and when to call your vet.
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Is Benadryl Safe for Dogs?
Benadryl (diphenhydramine) is generally safe for most dogs at the right dose — but only the plain version. Here are the risks, side effects, and warnings.