Mastic gum mastika 500mg 60 capsules mastika is made from mastic the natural resin of a small mediterranean tree mastic has been used for centuries by traditional healers to cure stomach upsets stomach and duodenal ulcers peptic ulcers heartburn and mouth ulcers it has been shown in clinical trials to cure peptic ulcers even in tiny doses and is free of side effects more recently peptic ulcers have been attributed to the germ helicobacter pylori which has also been linked to many o