Promote your body's natural defenses with Symbiotics Colostrum Plus capsules. Nature gave you a strong immune defense network, but environmental and physical stress, age and diet can deplete the immune system. The ingredients in colostrum help maintain a strong and balanced immune defense, especially in the bloodstream and digestive tract — where your need for immune defense may be greatest. Symbiotics Colostrum Plus also promotes athletic performance and recovery with growth factors that support strength and stamina while promoting muscle health.