I honestly thought all those claims about heart issues in small dogs were overblown, especially if they exercised and weren't obese. But after my vet detected a grade 1 heart murmur in my younger baby, I started reading up on it and turns out it's very common, and CoQ10 which is a key compound for hearts to pump is something that drastically drops with age. I searched for a CoQ10 supplement and came across EverPet which had the highest purity testing. After two months of using it I definitely see a difference. My 7-year-old is chasing squirrels again, not just watching them. I feel a huge knowing I'm supporting his heart early on, before any major issues erupt.