We started because our dog is having a lot of skin/fur issues: she's chewing it off on her tail, it's very thin on her whole body and her skin is very dry and flaky. Not to mention her breath! It has been about a month and we have noticed a change in her energy, her eyes aren't cloudy anymore and our other dog has been better behaved. But no change whatsoever with the skin/fur. I am beginning to wonder if it's a deeper problem than a food allergy/intolerance.