This supplement is designed to support horses of all ages with gastric ulcers. It combines natural calcium and magnesium with Colostrashield, which contains over 37 immune factors and more than 8 growth factors to aid in illness prevention and protect against infections. Horses of all classes can be fed 1 to 2 tablespoons per 1000 lbs daily, or 2 to 4 tablespoons 30 minutes to 1 hour before stressful events. *Contains l-tryptophan, which may be restricted in some competitions—check withdrawal times with event officials.