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

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.*

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.

NOW® Stevia Glycerite is alcohol-free and a zero-calorie, low glycemic, natural plant based sweetener that makes a perfectly healthy substitute for table sugar and artificial sweeteners. Unlike chemical sweeteners, NOW® Stevia Glycerite contains natural plant Stevia extracts.