So Coles has a grade 2 heart murmur and I'm wondering should I change his food to something that will help his heart? He is currently raw feed but I'm not sure if a raw diet will help his heart? He's been on water tablets for the last two weeks but he keeps vomiting. I have spoken with the vet and they have said not to give him anymore water tablets but to keep a close eye on any coughing. If the coughing comes back they can put him on a short course of water tablets. They are not sure if it is the water tablets coursing the vomiting as he has a few different meds I.e heart and arthritis meds. Coles had a blood test two weeks ago as he keeps having fainting fits but the blood test was normal. Vets thinks these fits are due to blood pressure dropping. Coles had a fainting fit yesterday. Any advice on diet and heart murmurs would be appreicated.