My dog's heart beats fast on Vetmedin. Should I stop the medication?

Question

My King Charles Cavalier Spaniel, aged 11, was prescribed Vetmedan 2.5MG every 12 hours, after a chest X-ray yesterday revealed an enlarged heart. I noticed after the 1st 2 tablets, that my dog’s heart is beating very rapidly, even audibly, even when asleep. My vet is not open again until Monday. Should I discontinue the meditation now? Pet's info: Dog | Cavalier King Charles Spaniel | Female | spayed | 10 years and 7 months old

Destini R. Holloway, DVM · Accepted Answer

Vetmedin (Pimobendan) is an inotrope, which means that its job is to make the heart pump more forcibly, so I would say that what you are seeing clinically is the medication doing its job. I would not recommend discontinuing this medication. But also, if you feel that your pet Ruby has any other adverse effects to this medication, then it will be necessary to have her seen and examined by a vet in person in order to get any recommendations as to what, if any, changes in her medication are needed in the future. Best of luck with Ruby and I hope that her condition can be stabilized well with her medication. Best wishes and take care.

My dog's heart beats fast on Vetmedin. Should I stop the medication?

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