Mastiha is a natural resin, known since the Antiquity to the people of Eastern Mediterranean countries, for clean teeth and fresh breath. It was the first natural chewing gum of the ancient world. Chios Gum Mastic and Mastil Oil have a strong anti-microbial action and prevent dental plaque formation. Sugar-free Elma contains natural chios mastic and large quantity of xylitol. Mastic Gum kills helicobacter pylori. Elma contains a very large amount of xylitol (34%) which effectively reduces acid production, prevents dental bacterium growth and fights tooth decay. Packaging may vary. Sugar Free, Does not contain aspartame. 10 pieces per box. Original mastic gum is available here.