Vi-Dab is for the prevention of infections acquired via an airborne route. It is an all natural, high potency topical cream for application to the nostril area. ViDab has been shown at the cell level to prevent transfection of a healthy cell with viruses. ViDab is composed of certain specific all natural "medium chain" fatty acids and triglycerides thereof and formulated in a soothing shea butter base. These fatty acids are believed to dissolve the protein coat away from a virus and thus prevent it from entering our bodies via the nasal/airborne route. ViDab has no heavy metal like zinc and is totally natural and safe