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Dog's eyes swollen and red from new food. How long to recover?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 3 years and 5 months old | 32 lbs

My dog, Lulu, is a basset hound and blue heeler mix. We switched her food last week to one that included fish, and over the past few days her eyes have been swollen and red and running yellow slime. Yesterday we switched her food back to something with chicken that we think she should be okay with, and I cleaned her bowls. I also gave her benadryl which seemed to help. How long until I should expect the swelling to go away? Am I doing everything I should be doing?

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1 Answer

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Answered By Lindsey Edwards MVB, BSc, IVCA

Veterinarian

Published on October 18th, 2017

Food sensitivities can take 4-6weeks to resolve but the sudden swelling should reduce within 3days if this is indeed the cause. If not resolving or she develops any pain or breathing difficulties you should have her assessed urgently

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