I give Cisco Fish Oil that comes in capsules. It has omega-3 Fatty Acids that are good for the coat and the heart. I put a whole in the capsule with a knife and squeeze the oil on his kibble. It smells!! It sure does a number on his coat. He didn't like it at first, but now he loves it. I only give it to him a couple times a week, because this seems like it works well for him. I started this with the advice of my vet and you can buy these capsule at the wal-mart or any vitamin store. Talk to your vet about the dosage to use.