Pet Medication 101: Vetmedin

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 Vetmedin (pimobendan) 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:
Pimobendan
2. Brand Name:
Vetmedin
3. How Dispensed:
Prescription-only
4. Forms:
Tablets 1.25mg, Tablets 2.5mg
5. Drug Type/Class:
Classified as an inodilator or an inotropic vasodilator
6. Uses in Dogs:
Pimobendan is used to treat or manage heart failure in dogs. More specifically, it is used to treat mitral valve disease and dilated cardiomyopathy.
7. How it Works:
Vetmedin works by improving systolic function without increasing intracellular calcium. It increases cardiac output and vasodilates, which reduces both the preload and afterload on the heart.
8. Side Effects and/or Signs of Overdose:
Vetmedin can cause decreased appetite, vomiting, diarrhea, lethargy, and difficulty breathing.
9. Drug Interactions:
Pimobendan should be used with caution with verapamil, diltiazem, propranolol, and atenolol.
10. Cautionary Statements:
Pimobendan seems to be safe and well-tolerated by most pets. It should be given on an empty stomach to ensure proper absorption/breakdown in the digestive tract. It may cause drowsiness or weakness. Pimobendan should be used with caution in dogs with liver failure, kidney failure, or in pregnant/lactating dogs.
Read more:
Your Pet’s Heart: A Guide to Understanding Heart Health in Dogs and Cats
Is diet important for my dog’s heart health?
Need to speak with a veterinarian regarding your dog’s heart 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.