About 3 years ago my then 9 year old dog was diagnosed with a mitral valve heart murmur. I started getting his blood tested for the BNP test, which is an indicator of overall heart health. A score of under 900 is considered to be normal for dogs. The first year, his score was 450. Just before his second year test, I started my dog on daily doses of ubiquinol. His score on the second year test was 848. A year later, after a full year on ubiquinol, his score had dropped to 600. Of course I can't be certain, but I am inclined to attribute this dramatic improvement to the daily doses of ubiquinol as that was the only significant change I made to my dog's health, nutrition and exercise routine during the past year. My dog is now 12 years old and has had no increase in the severity of his heart murmur and is on no prescribed medications. I think this has been a huge success for my dog.