BreathRx Starter Kit The BreathRx system is a total hygiene regimine that gives your patients superior fresh breath protection in three easy steps- 1) Brush 2) Scrape 3) Rinse. All of the products in the BreathRx system are powered by Zytex, a proprietary blend of ingredients designed to eliminate bad breath at the source and neutralize odors. First, a blend of Thymol and Eucalyptus oil kills the gram negative bacteria that emit Volatile Sulfur Compounds (VSCs) that cause bad breath. Second, zinc acts as a deodorizing agent and keeps working throughout the day to neutralize VSCs. As an added bonus, all BreathRx products are 100% alcohol-free and sugar-free. That is why patients all over America have made it the #1 dentist-dispensed breath care system!