Health Extension Grain-Free Buffalo, Whitefish & Chickpea offers all the health benefits of the Vets Choice Health System but in a grain-free formula. And you wont find any added hormones, only high quality, buffalo as the FIRST ingredient. Because we believe sensible protein levels are the first step to a healthy life. With such a pure formula, grain free is especially beneficial for dogs with allergies or sensitive digestive tracts. Unlike other brands, Health Extension’s grain-free variety contains a unique blend of nutrients and supplements, like apple cider vinegar and colostrum to boost immune systems for improved health.