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.*

This NOW product has been designed to provide a high potency, balanced blend of the two prominent species of resident intestinal bacteria. Regular intake of beneficial probiotics can aid in maintaining healthy intestinal flora.*

7-KETO® is a naturally occurring metabolite of DHEA, providing the same benefits as DHEA without its associated side effects.  Because the body's production of DHEA declines with age, so does the production of 7-KETO.  Weight gain is a common sign of aging that often accompanies the decreased production of DHEA and its metabolites.  7-KETO® has been patented for its ability to safely promote thermogenesis as well as for the maintenance of healthy body weight.*

NOW® BetterStevia™ is a zero-calorie, low glycemic, natural sweetener that makes a perfectly healthy substitute for table sugar and artificial sweeteners. Unlike chemical sweeteners, NOW® BetterStevia™ contains pure Stevia extract. NOW Foods takes special measures to preserve Stevia's natural qualities in this unique, pure, better-tasting Stevia.