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My dog has Giardia but no symptoms. Should I treat or will it go away?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 2 years and 3 months old | 17 lbs

My 2 year old dog tested positive for Giardia but is not showing any symptoms. Should I treat her even though she is not having any symptoms? Would giardia go away on its own?

2 Answers

Most Helpful Answer

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Answered By Dr. Dayna, DVM, CVA

Veterinarian, Certified Veterinary Acupuncturist

Published on November 12th, 2018

There are varying opinions on whether or not to treat asymptotic patients for giardia. I tend to be on the mindset that some giardia can be zoonotic meaning transmitable to humans so I usually treat. Did she test positive on a routine fecal test or was there a reason she was tested? Sometimes the immune system can clear giardia on its own, but we don’t see that happen very often. If your veterinarian were to recommend waiting and testing again in a month or so that would be appropriate as well. Best of luck and I hope this helps answer your question. Thank you for using Pet Coach.

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    Answered By Lauren Celestin, DVM

    Veterinarian, Veterinary Dentistry Resident

    Published on June 19th, 2017

    Hello there! This is very much doctor and client preference. I personally recommend treating regardless of symptoms and re-testing the stool 2 - 4 weeks prior to completion of the treatment. Treatment is also very simple. That way you don't have to deal with diarrhea and both you and Holly (mostly you) can sleep well knowing that she no longer has an intestinal parasite. Hope this helps in your decision making!

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