**臨床實證，兩個星期內牙齦健康提升 5 倍
1.Danette Ricci-Nittel & Michael Lynch. Substantiation for Claims: “Use Listerine® Antiseptic twice daily directed get up to 5X healthier gums in 2 weeks and get up to 9X healthier gums in 4 weeks”. 23 Jan 2013
2. Practice oral regime by using Listerine & brushing twice daily. 5X means 5X more of the healthy gum sites (based on gingivitis index) compared to baseline in which patients with mild to moderate gingivitis.
3. Protocol FCLGBP0042