Herbal supplement. Alcohol free. Supports immune defenses. Great taste for kids! Formulas by Michael Tierra L.Ac., O.M.D. Planetary Formulas Astragalus Jade Screen is a classic Chinese herbal formula (Yu Ping Feng Wan) for support of a healthy immune system. It is especially good to use when going into the winter season or for children going back to school. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)