One of my elderly dogs developed a murmur that got worse in 6 months time. We did use CoQ10 and a few other supplements (fish oil at my vets recommendation) his murmur actually improved after another 6 months. His vet was incredibly pleased and said that (in their experiences) murmurs in older dogs don’t usually get better, they usually progress. Who knows if it was a fluke or if the CoQ10 was responsible, but for his situation, I believe it certainly didn’t hurt.
He went on much longer than expected before going into full blown heart failure, and by this time he WAS on several prescription medications that helped to extend his life. (While I do think intelligent supplementation can be extremely helpful, heart disease is something I don’t attempt to work with on my own.)
Your dog, your decision when it comes to supplementation.
