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Is there a flea shot for pets? What's the best flea prevention?

Updated on September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | neutered | 8 years and 8 months old | 20 lbs

What's the best prevention got fleas? I was told there is a shot they can get that's supposed to be the most effective?

1 Answer

Most Helpful Answer

Debi Matlack

Answered By Debi Matlack

Veterinary Technician

Published on May 7th, 2019

There's no injection for fleas that I am aware of at this time (I have a cat that could sure use it is there were), but there are a number of very effective topical and oral flea preventatives that are available through your vet. The most effective one I have seen so far for dogs is Comfortis. It is an oral pill that will start killing fleas within 30 minutes of dosage and lasts for a month. Ask your vet what they recommend and see what seems like the best fit for you and your pet.
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