Diltiazem HCl ER Capsule

Rx approval required

We'll contact your veterinarian to review your medication request. If you aren't sure of the correct size and dose, please contact them directly or get in touch with our team.

Select Strength: 120mg

Strength

Select count: 30 ea

Are you a prescriber?

Diltiazem HCl ER is an FDA-approved commercial extended-release product, dispensed by Mixlab for veterinary use in cats and dogs. Available by prescription.

Use as directed by your veterinarian.

The uses and pharmacology described below reflect the FDA-approved labeling for this active ingredient; your veterinarian determines whether and how they apply to your animal's treatment plan.

Diltiazem is a calcium channel blocker that relaxes blood vessels and slows certain electrical activity in the heart; the extended-release formulation is intended for once-daily dosing. On the FDA-approved human label, it is indicated for hypertension and certain heart rhythm conditions.

In veterinary medicine, extended-release diltiazem has been studied for once-daily use in cats, most often to help manage hypertrophic cardiomyopathy, and is used in dogs for certain arrhythmias or hypertension. This information is not a substitute for veterinary diagnosis, prescribing, or monitoring.

Extended-release products are not interchangeable between brands or formulations — do not switch products or crush/split this medication without your veterinarian's specific direction, since absorption can vary between different extended-release diltiazem formulations. Commonly reported effects include decreased appetite, lethargy, and low blood pressure; slow heart rate has also been reported. Your veterinarian will likely recommend periodic monitoring, which may include blood pressure checks or echocardiograms.

Do I need a prescription for diltiazem?

Yes. Diltiazem is available only by prescription from a licensed veterinarian.

Is diltiazem HCl ER an FDA-approved product?

The active ingredient has an FDA-approved human label. Mixlab dispenses the commercial extended-release product under a licensed veterinarian's prescription for use in your pet.

What is diltiazem HCl ER used for in pets?

The extended-release form is used to help manage hypertrophic cardiomyopathy in cats and certain arrhythmias or hypertension in dogs, often for once-daily dosing convenience. Your veterinarian determines the appropriate use for your pet.

Can this be compounded in a different strength or form?

Contact Mixlab to discuss your patient's specific needs — compounding options are evaluated case by case.

Mixlab is a licensed veterinary pharmacy dispensing both compounded and commercial medications, operating under the oversight of licensed pharmacists and in compliance with applicable state and federal pharmacy regulations. Compounded medications are prepared in compliance with USP standards and under PCAB-accredited practices. All medications dispensed by Mixlab require a valid prescription from a licensed veterinarian.