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Ask Dr. Michael Salkin Your Own Question
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Cat Veterinary
Satisfied Customers: 24467
Experience:  University of California at Davis graduate veterinarian with 44 years of experience.
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My cat received a dose of Trifexis by accident. My cat's wt

Customer Question

Customer: ***** ***** my cat received a dose of Trifexis by accident. My cat's wt is approx. 15lbs and the medicine is for a 20-40 lbs dog
JA: Thanks. Can you give me any more details about your issue?
Customer: my cat received a dose of Trifexis by accident. My cat's wt is approx. 15lbs and the medicine is for a 20-40 lbs dog
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Submitted: 9 months ago.
Category: Cat Veterinary
Expert:  Dr. Michael Salkin replied 9 months ago.

There are 9.3 mg of milbemycin oxime in that Trifexis. Milbemycin oxime is dosed at at 1 mg/lb to cats and so 9.3 mg is actually an underdose and of no consequence.

There are 560 mg of spinosad in that Trifexis. Spinosad is dosed at 560 mg for a cat of your size and so your cat should remain safe.

There's no reason to induce emesis or treat in any manner. You might notice transient vomiting which is the most common adverse effect of spinosad in dogs and cats.

Please respond with further questions or concerns if you wish.

Expert:  Dr. Michael Salkin replied 9 months ago.
Hi,
I'm just following up on our conversation about your pet. How is everything going?
Dr. Michael Salkin

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