In hot weather horses lose electrolytes rapidly which decrease performance and can lead to health issues. Horses should have access to white salt blocks at all times. Some horses do not use salt blocks. These horses should have salt added to their grain daily. Stamina Plus’s Equine Supplement does include electrolytes but in hot weather and exercise their needs may increase. For this problem Stamina Plus has Equine Electrolyte Plus that is designed for the exact loss of electrolytes in hot weather.