VS-C® [Immune]. This viral-immune formula is a combination that Chinese herbalists would describe as a “metal-enhancing” formula. These herbs create an unfavorable environment for foreign invaders. Developed by Dr. Wenwei Xie, VS-C is exclusive to Nature’s Sunshine. It contains the following time-honored botanicals: Dandelion root, Purslane herb, Indigo leaves and root, Thlaspi herb, Bupleurum root, Typhonium flagelliforme, Scute root, Cinnamon twig, Licorice root, and Ginseng root. VS-C is also available in liquid form, with the components of its dried counterpart extracted and preserved in a glycerin base. Adults: take 4 capsules two–four times daily with food; liquid, take 30–40 drops two–four times daily. Children: use half the adult recommendation Liquid Herb, 4 Kids Too!