I find that drinking down an entire cold blasting smoothie actually helps prevent colds. I order one whenever I feel a cold coming on and, I'm pretty much able to see my symptoms improve. THis particular drink is packed with vitamin C, ecchinacea and zinc. Its got an orange peachy flavor and is a whole lot easier to swallow than cold medicine. I like most of Jamba's smoothies and feel that their portions are great for the price.