Heart & blood pressure Dogs & Cats

Amlodipine for dogs and cats

Treats high blood pressure, especially in cats, to protect the kidneys, eyes and brain. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerAmlodipine is a prescription medicine for dogs and cats. A calcium-channel blocker that relaxes blood vessels. The most common side effects: cats: vomiting, diarrhea, low appetite, sleepiness.

Key facts

Generic nameAmlodipine
Common brand namesNorvasc
Used inDogs & Cats
TypeHeart & blood pressure
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

Treats high blood pressure, especially in cats, to protect the kidneys, eyes and brain. [1]

How it works

A calcium-channel blocker that relaxes blood vessels. [1]

Side effects and cautions

Common side effects: Cats: vomiting, diarrhea, low appetite, sleepiness. Dogs: gum overgrowth. [1]

Use with care: Not for pets in shock or with liver failure or aortic stenosis. Your vet will recheck blood pressure. [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.

Amlodipine FAQ

What is Amlodipine used for in dogs and cats?

Treats high blood pressure, especially in cats, to protect the kidneys, eyes and brain.

What are the side effects of Amlodipine?

Cats: vomiting, diarrhea, low appetite, sleepiness. Dogs: gum overgrowth.

Does Amlodipine need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Amlodipine 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 – Amlodipine (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs