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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

Answered By Destini R. Holloway, DVM
Veterinarian
Published on August 20th, 2019
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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