Support your body from the inside out with powerful, clean immune system support. Nuun Immunity is an effervescent drink that helps support the natural defense systems your body uses to fight off cold and flu symptoms. Nuuns potent blend of botanicals, vitamins, minerals, and electrolytes works to support the bodys natural defenses, so your immune system has all the right tools to fight off pathogens and repair itself. Just add one tablet to 16oz hot or cold water and get back to balanced.