Researchers (Huwez et al 1998) in the New England Journal of Medicine reported that mastic is an effective antibacterial agent for the treatment of H. pylori. Authors stated that, “Even low doses of mastic gum – one gram per day for two weeks – can cure peptic ulcers very rapidly… We have found that mastic is active against Helicobacter pylori, which could explain its therapeutic effect in patients with peptic ulcers.”

Studies by Al-Habbal et al. (1984) and Al Said et al. (1986) showed similar results in which mastic supplementation provided symptomatic relief of duodenal ulcers in 80% of individuals who were treated with the supplement, and 70% experienced healing with endoscopy. 

Other studies have shown that crude mastic gum possess antibacterial properties against H Pylori (Marone et al. 2001).