Updated On September 23rd, 2025
Pet's info: Dog | German Shepherd | Male | neutered | 110 lbs
What flea and tick medicine has been making dogs I’ll or die
1 Answer
Published on March 2nd, 2018
I occasionally see toxicity issues with some of the over-the-counter topical flea products like Hartz, Sergeant's, etc. - this is more commonly a problem in cats, but can sometimes be an issue with small dogs as well, especially if they've been dosed above their weight range. All of the prescription flea/tick medications currently on the market (Bravecto, Nexgard, Simparica, etc.) are quite safe and effective.
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