NOW® Air Defense® is a blend of ingredients that support healthy immune function and respiratory health during seasonal changes and year-round. Air Defense® contains PARACTIN®, a patented extract of Andrographis paniculata. Studies have shown that PARACTIN® helps to support a healthy and balanced immune response. ImmunEnhancer™, Elderberry, Echinacea, and Astragalus herbal extracts have also been included for their healthy immune supporting properties. Olive Leaf Extract has been added to help to maintain healthy respiratory function.*

Astragalus Root (Huang qi) has been used as a popular herbal tonic in China for many centuries.  Some of the known active components include flavonoids, free amino acids, trace minerals and polyphenols.

NOW produces a full line of potent antioxidant supplements including: Vitamins A, C, E, Selenium, Grape Seed, Lycopene and Pycnogenol®. Request our retail catalog at your favorite health food store. Caution: Do Not Eat Freshness Packet. Keep in Bottle.

5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simplicifolia).