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Pet Medication 101: Amlodipine

Pet med amlodipine

It’s important to understand a medication’s uses and side effects before giving it to your pet. This medication info sheet is meant to give you a good understanding of what amlodipine is used for, how it works, and potential side effects in cats and dogs. Always consult a veterinarian before giving your pet any medication.

1. Drug Name:


2. Common Name or Brand Name:


3. How Dispensed:

Prescription only

4. Forms:

Tablets 2.5mg, Tablets 5mg, Tablets 10mg

5. Drug Type/Class:

Calcium channel blocker

6. Uses in Dogs and Cats:

Amlodipine is used to treat hypertension (high blood pressure).

7. How it works:

Amlodipine inhibits calcium from flowing across vascular smooth muscles and cardiac muscles. It is most effective in the vasodilation of peripheral arteries, making it an afterload reducer.

8. Side Effects and/or Signs of Overdosage:

Since amlodipine has a slow onset of action, side effects are infrequent. However, azotemia (increases in certain nitrogenous compounds in the blood), hypokalemia (low potassium), weight loss, and fast heart rates have all been seen with this drug.

If used at high doses, bradycardia (slow heart rate) and profound hypotension (low blood pressure) have been reported.

9. Drug Interactions:

There are no significant drug interactions; however, using it with other drugs that decrease blood pressure could result in profound hypotension. Use with caution in combination with beta-blockers, other calcium channel blockers, and diuretics.

10. Cautionary Statements:

Amlodipine should be used cautiously in patients with congestive heart failure. It should be avoided in patients with liver disease, bradycardia, aortic stenosis, or hypotension. Due to fetotoxicity seen in laboratory animals, it is contraindicated during pregnancy.

Read more:

Causes and Treatment of High Blood Pressure in Cats

Can dogs develop heart arrhythmias?

Your Pet’s Heart: A Guide to Understanding Heart Health in Dogs and Cats

Need to speak with a veterinarian regarding your pet’s medication or another condition?

Click here to schedule a video consult to speak to one of our vets. You can also download the FirstVet app from the Apple App Store and Google Play Stores.

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