Modern science has not yet found a way to prevent the common cold. And unfortunately, neither have we. We do believe the best offense to respiratory viruses is a strong defense to help maintain a healthy respiratory system. Our Winter's Friend Cold & Flu formula is packed with good stuff, just check out the percent of daily values contained in each dosage detailed on the next tab. We've sourced our Vitamin C from Acerola; the juice from these cute little red berries has been shown to have better absorption in blood than ascorbic acid alone. Zinc is about the best thing one can take before a cold grabs hold as it helps maintain a healthy respiratory system by reducing the replication of common cold virus. And that pretty purple coneflower known as Echinacea Purpurea isn't delightful just standing in a flower vase. Echinacea has immune stimulant properties, increases phagocytosis, enhances cytokine production and has been shown to have antiviral, antimicrobial and immune-modulatory activity. (Too much? We thought it might be, but we do get very excited by the science behind these incredible plant sourced nutrients.) Suffice it to say Echinacea does great things to help your body stay healthy and far away from the tissue box. And all without making you jittery, or sleepy.