Formulated by and developed exclusively for dentists, BreathRx is the first breath management system dedicated to the multifaceted causes of halitosis . Zytex the secret to Breath Rx, is the most effective complex known to fight bad breath. This powerful dual action complex not only reduces foul smelling Volatile Sulfur Compounds ( VSC's ) but also kills the gram negative organisms responsible for their formation. BreathRx is high performance chemistry for a broad range of treatment options. Breath Rx, is the most effective complex known to fight bad breath.