The invention encompasses a nutrition system for a companion animal that includes a plurality of pet food packets, wherein an amount of pet food corresponding to a single meal for a companion animal may be selected and wherein the amount of pet food is formulated to alleviate or manage a disorder in a companion animal. In various embodiments, the pet food packets include the nutritional requirements for a companion animal (e.g., protein, fiber, fat) as well as one or more ingredients that alleviate or manage a disorder in a companion animal.