Can you treat worms in dogs over the counter? A Complete Guide

How Long Does Dewormer Take To Work?

As long as your dog has consumed all of the deworming medication, it should start to kill worms rapidly within two to six hours. After that time, you should see your dog begin to pass worms in his next bowel movement.

Best Dewormer For Puppies: Bayer Quad Dewormer Review

Bayer Quad Dewormer by Elanco Animal Health is a broad-spectrum chewable tablet effective against hookworms, roundworms, tapeworms, and whipworms. The active ingredients, praziquantel, pyrantel pamoate, and febantel, are the same as in Drontal Plus, a common vet-prescribed dewormer. But you don’t need a prescription for this product.

Bayer Quad is our pick for the best dewormer for puppies because it’s safe for dogs three weeks of age and older. Many other brands aren’t safe for puppies until they’re six weeks old or older. But it’s an excellent solution for dogs of all ages. It also only requires a single dose. You can give it as a chewable or break it up and sprinkle it onto your dog’s food. Many pet parents say it’s extremely effective; however, a few people report vomiting as a side effect.

Pros Cons
Same active ingredients as vet-prescribed Drontal Plus Not safe for pregnant and lactating dogs
Kills 4 types of worms (7 species) A bit on the pricey side
Only requires a single dose A few reports of vomiting
Safe for puppies 3 weeks and older
  • Small Dogs & Puppies (2-25 lbs):
  • Medium Dogs (26-60 lbs):
  • Large Dogs (45+ lbs):
  • Best Dewormers For Dogs & Puppies

    We’ve researched and picked the best over-the-counter (OTC) dewormers for dogs. These products will kill active infestations, and you can use them as a preventative medication as well, typically once per month. We’ve based our rankings on the medicine’s efficacy, ease of administration, price, customer reviews, and more. Note: You should always see your veterinarian for a proper diagnosis of worms to ensure your pup is getting the most effective treatment possible.

    Over the Counter Dog Dewormer. Dr. Dan talks dewormers.