Petco Text Logo
Petco Pet Logo

Where can I buy the best and most effective flea medicine for my dog?

Updated On September 23rd, 2025

I need to purchase a flea medication/pill of my dog. Where can I find some?

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 19th, 2016

You can pick up flea medication from your vet's office. You don't need an appointment to get them. Flea treatment from your vet's office will be a better product than those you can buy from the supermarket. If your dog already has fleas, you can get Capstar. It's a single dose pill that works in 30 minutes to kill fleas. The next day, you can put a spot on treatment like Advantage. It has to be used once a month every month for effective protection against fleas.

Vote icon

6Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored