I'm sorry your kitty has a heart murmur. I know nothing about heart murmurs at all. My oldest cat, Tiger, has a health issue. Basically she will stop eating for no reason and we have to give her pills and force feed her. This has happened 4 times. Right now she is doing just fine and sitting with me right now as I type this. We were never able to figure out what the cause of this is. It had been like clock work just about every 6 months, then all of a sudden she's been fine for the past 2 years and our move hasn't bothered her at all. She also has a sensitive stomach, and we've only found a couple of foods she can eat without throwing up. They are on California Natural for this reason. As soon as we moved I went and found a vet here whom I like and am very happy with. (I still haven't found a dentist or doctor for me or hubby yet). Then another of our cats, Ariel, also has health issues. She has both allergies and kidney/bladder stones. She's on Royal Canin SO for the stones, but she's allergic to the corn in it. Go figure, so she gets a bath with an oatmeal foam every so often and that seems to work.

(I've spent several thousand dollars on Tiger over the years, and I truly don't want to know what the total amount has been. She's worth it though. She moved with me from Ohio to NC 10 yrs ago.)

I wish you and your kitty the best.