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My dog has giardia. Is Metronidazole safe for puppies? Best probiotic?

Updated on September 23rd, 2025

Pet's info: Dog | Rhodesian Ridgeback | Male | neutered | 4 years and 4 months old | 90 lbs

Hi, I'm a former vet tech.My Dog has contracted giardia twice this year. Is Metronidazole less than 6 months old safe to give? What probiotic would you recommend? Thank you so much for your time and effort. Respectfully, Deirdre

2 Answers

Most Helpful Answer

Destini R. Holloway, DVM

Answered By Destini R. Holloway, DVM

Veterinarian

Published on August 20th, 2019

Yes, Metronidazole is safe to give pets that are less than 6 months old. In refractory cases, it is often recommended to also treat with a dewormer (i.e. Fenbendazole). I really like Foriflora probiotic, here is a link --> https://www.chewy.com/purina-pro-plan-veterinary-diets/dp/50029

In cases where a pet is positive for Giardia but not symptomatic, we may not treat, so its best to ask your veterinarian for advice before moving forward. Also if your pet is constantly getting Giardia, then I would highly consider doing a bloodwork check to ensure there is no immune system issue that is making your pet more prone to infections.

I wish you all the best in managing your pet Jackson's Giardia. Take care!
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Related Answers from Veterinarians

  • Answered By Jessica Keay, DVM

    Veterinarian

    Published on May 21st, 2018

    Metronidazole is a very commonly used drug to treat Giardia as well as other conditions. At a normal dose, Metronidazole rarely causes any side effects at all in pets. Nausea/decreased appetite would be the most common side effect (but once again, this is rare). At very high doses or long term dosing (taking nonstop for months) we can see neurological effects, but this do not occur at a dose that would be used to treat Giardia. You can read more about this drug at https://www.vin.com/veterinarypartner/default.aspx?pid=19239&id=4951414 .

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