Stomach & digestion Dogs & Cats

Cerenia for dogs and cats

Treats and prevents vomiting and motion sickness in dogs and cats. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerCerenia (maropitant citrate) is a prescription medicine for dogs and cats. It blocks substance P at the brain's vomiting center (an NK1 antagonist). The most common side effects: drooling and vomiting at motion-sickness doses; soreness with the injection.

Key facts

Generic nameMaropitant citrate
Common brand namesCerenia
Used inDogs & Cats
TypeStomach & digestion
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

Treats and prevents vomiting and motion sickness in dogs and cats. [1]

How it works

It blocks substance P at the brain's vomiting center (an NK1 antagonist). [1]

Side effects and cautions

Common side effects: Drooling and vomiting at motion-sickness doses; soreness with the injection. [1]

Use with care: Not for pets that ate a toxin or have a blocked gut, since stopping vomiting can hide the problem. Not for pups under 8 weeks. [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.

Cerenia FAQ

What is Cerenia used for in dogs and cats?

Treats and prevents vomiting and motion sickness in dogs and cats.

What are the side effects of Cerenia?

Drooling and vomiting at motion-sickness doses; soreness with the injection.

Does Cerenia need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Cerenia 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.

Related medications

Related cost guides

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 – Maropitant citrate (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs