A citrus mint-flavored immune Booster. From beneath the shadowed tropical waves comes a helping hand. Like the darkened interior of our bodies, blk.'s Immunity is akin to our inner immune system. It is within the dark that we vanquish susceptible enemies of the state. Think of the blk. Immunity ingredients as hired hands. They're here to assist the immune system for a short amount of time and your health, blk. Immunity is ready to boost you to the next level .