Dewormers Dogs & Cats

Praziquantel (Droncit) for dogs and cats

Treats tapeworms, often in combination dewormers. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerPraziquantel is a over the counter medicine for dogs and cats. It damages the tapeworm's outer skin so the body can digest it. The most common side effects: dogs: low appetite, vomiting, diarrhea.

Key facts

Generic namePraziquantel
Common brand namesDroncit, Drontal
Used inDogs & Cats
TypeDewormers
Prescription?Over the counter (ask your vet first)
Typical US priceNot listed (no reliable public source)

What it's used for

Treats tapeworms, often in combination dewormers. [1]

How it works

It damages the tapeworm's outer skin so the body can digest it. [1]

Side effects and cautions

Common side effects: Dogs: low appetite, vomiting, diarrhea. Cats: rare drooling or diarrhea. [1]

Use with care: Not for puppies under 3 weeks or kittens under 6 weeks. Fleas spread a common tapeworm, so flea control matters too. [1]

Call your vet right away if your pet has trouble breathing, facial swelling, hives, collapse, or any side effect that is severe or getting worse.

About dosingDosing is your vet's call. We don't list doses because the right amount depends on your pet's weight, age, health and other medicines. Don't change a dose or stop a medicine without asking your vet, and never give a pet medicine meant for people unless your vet tells you to [2].

What it costs

We don't list a price for this one because we couldn't find a reliable public source. Ask your vet or pharmacy for a quote; prices depend on your pet's size, the dose and where you fill it.

Praziquantel FAQ

What is Praziquantel used for in dogs and cats?

Treats tapeworms, often in combination dewormers.

What are the side effects of Praziquantel?

Dogs: low appetite, vomiting, diarrhea. Cats: rare drooling or diarrhea.

Does Praziquantel need a prescription?

Many forms are sold without a prescription. Still, check with your vet first. Pet doses and safe products are not the same as for people.

How much Praziquantel should I give my pet?

Only your veterinarian can tell you. The right dose depends on your pet's weight, health and other medicines, so we don't list doses. Never give a pet a medicine prescribed for a person or another animal without asking your vet.

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This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.

Sources (2) — tap to show
  1. VCA Animal Hospitals – Praziquantel (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs