Skip header
Free Shipping Over $49
My ProfileMy OrdersMy AutoShipMy RxMy PetsMy VetsMy RewardsSign In

Diltiazem ER Capsule Rx

4.86 out of 5 stars
This Item Ships FREE!
Save 9% on your 1st AutoShip order and 6% on all future AutoShip orders

Please confirm

This item is already on your autoship schedule! Are you sure you want to add it again?

Product Overview

How To Use

What’s in it?


Questions & Answers

Product Description

"Diltiazem ER (Cardizem) is typically used to treat cats suffering from hypertrophic cardiomyopathy, hypertension, and supraventricular tachyarrhythmia. In dogs, it is used to treat SVTs or hypertension.

Capsules are sold individually."

What is Diltiazem ER Capsule?

Diltiazem is used in the treatment of hypertrophic cardiomyopathy.

Who is Diltiazem ER Capsule for?

For use in cats and dogs.

Why use Diltiazem ER Capsule?

Diltiazem is useful in treating hypertrophic cardiomyopathy, atrial fibrillation, supraventricular tachycardia (SVT), and hypertension.

How does Diltiazem ER Capsule work?

Diltiazem is a calcium channel blocking medication used by veterinarians to treat patients with cardiac arrhythmia or hypertension. It decreases cardiac afterload, blood pressure, and peripheral resistance, and it also causes vasodilatation. It slows the firing rate of the sinus. When used as directed, it is less likely than other calcium channel blockers to affect cardiac contractility. It is rapidly absorbed when orally consumed, then metabolized by the pet's liver. The bioavailability of this medication is greater in cats than in dogs, and the levels of both cats and dogs are less than those in humans.


Apotex Corp.

Active ingredient(s):


How is Diltiazem ER Capsule sold?

Available in individual capsules of 120 mg or 240 mg strengths.

What are the side effects of Diltiazem ER Capsule?

The most frequently reported adverse reaction is vomiting. Other potential reactions include:
  • Heart arrythmias
  • Slow heart rate
  • Low blood pressure and associated listlessness

What special precautions are there?

Keep out of reach of children.

What to do if overdose?

Contact your closest emergency pet hospital.

How can I store Diltiazem ER Capsule?

Store in a dry and cool environment.

Helpful Tips:

Your veterinarian may prescribe Diltiazem for emergency stabilization or for long-term use to treat chronic conditions.

Pharmacists are standing by to offer Pet Parent counseling regarding prescription medication purchased from Allivet before and after dispensing. Pharmacists on duty are available Monday-Friday, 9:30AM - 5:30PM EST and will be on call Saturday 12:00PM - 4:00PM EST for consultation.


Use as directed by your veterinarian

Main Ingredients


Write a Review

Diltiazem ER Capsule

Customer Submitted Questions

is this pill enclosed in a capsule with a total of 4 pills?

1 Answer
Ask a New Question

Don’t know something or can’t find the information you are looking for? Ask us a question!

*Required Fields
We will ONLY use your email to notify you in regards to your submission.Privacy StatementQuestions & answers are typically posted within 24 hours, pending approval.