Supercharge your immunity with Triple Defense Boost. This powerhouse delicious berry flavored immune support drink boosts your natural killer cells by 3X and has been shown to increase the number of critical immune cells by 5.8X. It provides immune support with Vitamin C, D, Zinc, a patent pending blend of yeast beta-glucan, reishi mushroom extract panax ginseng root extract and a proprietary blend of elderberry extract, quercetin, and echinacea extract. Mix with hot or cold water.