Nature Fresh Herbal Anti-microbial Mouthwash with Xylitol and herbal extracts. Fresh & natural oral hygiene. Herbal extracts of: Olive Leaf, Cloves, Aloe Ferox and Tea Tree fight microbial infections of the mouth and throat. Green Tea, Liquorice root, Calendula and Rooibos tea help to soothe and heal inflamed, irritated or bleeding areas. What is Xylitol? Xylitol is a natural sweetener but also aids in the prevention of bacterial infections, sore throats, post-nasal drip, snoring and tooth decay.