Medically reviewed by Ruffly’s Veterinarian Friends — licensed veterinarians, and pet parents themselves. Last reviewed June 9, 2026.
TL;DR: Vetmedin (pimobendan) is a prescription heart medication for dogs with congestive heart failure (CHF), most often caused by mitral valve disease (MVD) or dilated cardiomyopathy (DCM). It’s an “inodilator” — it both strengthens the heart’s contractions and relaxes (dilates) blood vessels, which improves how well a failing heart pumps. In the landmark EPIC study, pimobendan delayed the onset of heart failure in at-risk dogs by roughly a year, and it’s been shown to improve quality of life and extend survival. It’s usually given twice daily by mouth; your veterinarian sets the plan. A prescription is required.
A heart-failure diagnosis is frightening, but Vetmedin is one of the most important tools vets have for helping dogs feel better and live longer. Here’s how it works, what the evidence shows, and how to manage the ongoing cost.
This article is educational and isn’t a substitute for veterinary care. Heart disease needs veterinary diagnosis and monitoring — your vet (or a veterinary cardiologist) determines whether Vetmedin is appropriate and the right dose. Seek urgent care if your dog has severe breathing difficulty.
Vetmedin is used in dogs with congestive heart failure, the stage where a diseased heart can no longer pump efficiently and fluid backs up (often into the lungs). The two most common underlying causes are:
It’s also used in some preclinical (not-yet-symptomatic) dogs with MVD and an enlarged heart, based on the evidence below. See the Vetmedin product page or browse dog medications.
Pimobendan does two helpful things at once, which is why it’s classed as an inodilator:
Together, that means better cardiac output and lower pressure inside the heart — the heart does more useful work with less strain.
Pimobendan is unusually well-studied for a veterinary drug:
That combination — feeling better and living longer — is why it’s a cornerstone of canine heart-failure therapy.
Pimobendan is generally well tolerated. Dogs on heart medication need regular veterinary monitoring (exams, and often chest X-rays or echocardiograms) to track the disease and adjust therapy. It’s frequently prescribed alongside other heart medications (such as diuretics) — never add, stop, or change doses without your veterinarian. Report any worsening cough, fast or labored breathing, weakness, or fainting promptly.
Heart medication is typically lifelong, so the monthly cost adds up. At Ruffly:
Medications are internationally sourced from licensed pharmacies and pharmacist-verified, and shipping is free over $49. A prescription is required — upload it, have us contact your vet, or transfer it.
It treats congestive heart failure in dogs, usually from mitral valve disease or dilated cardiomyopathy, and is used in some preclinical MVD dogs with an enlarged heart. It requires a prescription.
It’s an inodilator: it strengthens the heart’s contractions and relaxes blood vessels at the same time, improving cardiac output and reducing strain on a failing heart.
Evidence says it helps. The EPIC study showed pimobendan delayed heart-failure onset by about 12 months in at-risk dogs, and it’s been shown to improve quality of life and survival in dogs already in heart failure. Your vet can explain what to expect for your dog.
By mouth, usually twice daily, as directed by your veterinarian. Don’t change the schedule on your own — it’s often used with other heart medications.
Yes. Generic pimobendan is available; you can compare brand and generic pricing on the product page.
Yes. You can upload your prescription, have Ruffly contact your veterinarian, or transfer it from another pharmacy.
See the Vetmedin product page for brand and generic pricing, browse dog medications, or upload a prescription. Always work with your veterinarian (or a veterinary cardiologist) on your dog’s heart care.
