Vitamins are essential for the metabolism of other nutrients and for the regulation of many physiological and metabolic processes. Our specially selected ingredients supply a variety of natural vitamins. However, due to the importance of the metabolic and physiological processes that require vitamins, we supplement our diets with other sources known for their high biologically available content— forms of the vitamins that are more accessible to your pet's body and easier for them to use. All Fromm products meet the recommendations set forth by AAFCO's canine and feline nutrition expert subcommittees.