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Is softer, lighter stool normal for dogs on Panacur for Giardia?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | 3 months and 17 days old | 12 lbs

Pepper on second treatment (panacur 5 days) for giardia. We are on Day 3 of Panacur and it seems that her stool is now less firm (still formed) and a tad lighter brown than before beginning the Panacur. Could it be because it is helping to expel the parasite? I am at a total loss with this giardia nightmare that won't seem to end. I have also been adding pumpkin to her food to help with firming, it doesn't seem to help.

1 Answer

Most Helpful Answer

Published on April 8th, 2017

Be patient and try not to panic. It is normal for stool to change during treatment for any parasitic infection. You may have better success using a very digestible prescription diet like Hills I/D for a few weeks while you're dealing with the Panacur treatment, and I would recommend adding canine probiotics to the food as well to help repopulate good gut bacteria. Finish the Panacur as prescribed. Pepper's stool will normalize with time.
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