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. Are you concerned about your pet?Book a video consultation with an experienced veterinarian within minutes.Professional vet advice onlineLow-cost video vet consultationsOpen 24 hours a day, 365 days a year Book Video Consultation 1. Drug Name:Pimobendan2. Brand Name:Vetmedin3. How Dispensed:Prescription-only4. Forms:Tablets 1.25mg, Tablets 2.5mg5. Drug Type/Class:Classified as an inodilator or an inotropic vasodilator6. 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:Heart Murmurs in DogsYour Pet’s Heart: A Guide to Understanding Heart Health in Dogs and CatsIs 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.