our product is very effective as a preventative anti-viral product and we market as a respiratory defense system ViruStat-RDS is made from all natural ingredients including Silver Colloid, Xylitol and Cinnamon in base of purified water. This novel spray can be marketed as an Invisible Mask to help protect against infections with use of Appropriate Personal Protective Equiptment. In the USA this product is sold as a Dietary Supplement and is sold without a prescription on Ebay and local vitamin stores