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My dog ate horse chestnuts. Could this cause her sudden diarrhea?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Female | unspayed | 1 year and 2 months old | 72 lbs

is it possible my dog eats horse chestnuts and now has runny stools. a horse chest nut tree thanks. did already send this question but they thought i ment horse poo

1 Answer

Most Helpful Answer

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Answered By Dr. Leigh, DVM

Veterinarian

Published on October 25th, 2017

Ingestion of small quantities of Horse Chestnut tree may cause gastrointestinal signs (vomiting, diarrhea, decreased appetite, etc), ingestion of larger amounts may be toxic and also result in neurological signs. There is no specific antidote for this and treatment is supportive with fluids, anti-vomiting/diarrhea medications, gastrointestinal protectants, etc. If she is otherwise acting normal then you could withhold food for 12 hours and then try a bland diet of chicken and rice and see if the diarrhea resolves. If the diarrhea continues and/or she has any additional signs then she should be examined by a vet for treatment. It would also be a good idea to find a way to keep her from eating Horse Chestnuts in the future.

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