ONE AC is a powder feed supplement for horses. It is a patented nutritional supplement developed specifically for the nonsweating horse. The ability to sweat is an essential physiological response in the horse if it is to perform in hot and humid climates. Failure to sweat (anhydrosis), can reduce the equine athletes ability by 1520, and jeopardize its life if forced to perform. One package of ONE AC will last one horse approximately 30 32 days.