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It depends on the dosage of Benadryl (Diphenhydramine Hydrochloride (HCL)). The recommended dosage is 1-2mg per lb of the dog. So your 20lb pug would need approximately 20-40mg. The standard Benadryl tablet is 25mg. So give your dog roughly 1-1.5 Benadryl tablets every 8-12 hours as needed for symptoms.

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14y ago

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