I have a 7yr. old Golden Retriever who was diagnosed three years ago with a "suspected heart murmur." This has now been confirmed, and the blood test result is in the "middle range" and the vet thinks it is a leaking heart valve. The dog is showing no symptoms whatsoever, and the vet suggests that it would be a good idea to start him on Vetmedin before he begins to show symptoms. I have read that supplements such as Ubiqunol would be worthwhile so am wondering if you could advise if this and any others would be helpful? He weighs 70lbs. so perhaps you could also give me the dosage. Would you agree that I should also put him on Vetmedin? As I live in a rural area of Scotland I guess anything you suggest will have to be purchased online either from the UK or from the USA. Many thanks!