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Is 8.33mg Benadryl safe for my 9lb dog with an allergic reaction?

Updated On September 23rd, 2025

Pet's info: Dog | Dachshund miniature | Female | spayed | 11 years and 3 months old | 9 lbs

Hey. My 9 lb dachshund is having an allergic reaction. Her eyes won't stop watering and her neck is swollen. I have a 25 mg capsule of Benadryl. I opened the capsule up and have 1/3 set aside for her. I'm scared to give it to her. Is it okay to give my dog 8.33 mg of Benadryl that way? Help me quick

1 Answer

Most Helpful Answer

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Answered By Lauren Kennedy, DVM

Veterinarian

Published on August 6th, 2017

This amount of Benedryl is safe for Britta. However if she does not respond to it within 1-2 hours or her symptoms worsen I would recommend taking her in to the vet. Anaphylaxis can be an emergency situation and life threatening.

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