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My dog threw up Heartgard. When can I give him another dose?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 7 years and 3 months old | 55 lbs

Hi, I fed my 25kg dog his Heartgard last night at 9pm,and today he vomited up three quarters of the Heartgard at 7am together with bile. Should I give him another dose, or just give him another three-quarter dose? Thanks.

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on October 27th, 2019

You can give him another full dose but I would wait a couple of days. That is very abnormal that the Heartgard would not have been digested fully and out of the stomach after 10 hours....... When you give it again I think you should give it with a piece of bread to help with digestion.

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