Supplement analysis backed by scientific evidence · PT

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Limited evidenceGut health

Mastic Gum

A resin from the Chios mastic tree with one genuinely decent RCT in functional dyspepsia and a weak, much-overhyped signal against H. pylori. The internet claim that it eradicates H. pylori on its own is not supported: the actual trial eradicated infection in a minority of patients.

What the science says

  • Relieves functional dyspepsia Moderate evidence

    In a prospective randomized double-blind placebo-controlled trial of 148 patients, 350 mg of Chios mastic gum three times daily for 3 weeks produced symptom improvement in 77% versus 40% on placebo, with significant gains in stomach pain, pain on anxiety, dull ache and heartburn. This is the strongest evidence mastic has and it is still a single trial that needs replication.

  • Eradicates Helicobacter pylori Limited evidence

    The randomized pilot in 52 patients found 350 mg three times daily for 14 days eradicated H. pylori in only 3 of 13 patients (about 23%), with no eradications in the group taking mastic plus pantoprazole. Standard quadruple therapy achieves roughly 90%. Mastic is not an alternative to antibiotic eradication, and a small adjunct pilot has not changed that.

  • Reduces inflammation in inflammatory bowel disease Limited evidence

    A systematic review of mastic in IBD found small studies, mostly in Crohn's disease, reporting reduced CRP, IL-6 and some fecal biomarkers at 2.2 g/day for 4 weeks to 3 months; a placebo-controlled trial of mastiha supplement showed changes in fecal biomarkers but the clinical significance was unclear. Sample sizes are typically under 60 and the reviews rate the evidence as preliminary.

  • Builds a stronger jawline through chewing Limited evidence

    There is no human trial of mastic gum, or any chewing gum, on jaw or facial morphology in adults. Masseter hypertrophy from heavy chewing is documented in bruxism, but no controlled study shows a cosmetic jawline effect from mastic specifically, and the resin's clinical data are all about the gut, not the face. Excessive hard chewing risks TMJ pain.

Dosage & safety

Studied doseThe dyspepsia trial used 350 mg three times daily (1,050 mg/day) for 3 weeks; the H. pylori pilot used the same dose for 14 days. IBD studies used about 2.2 g/day for 4 weeks to 3 months. Capsules of Chios mastic (Pistacia lentiscus var. Chia) are standard; chewable resin tears are also used but the dose is impossible to control.
SafetyWell tolerated in trials; mild GI upset and headache are the usual complaints. It is a plant resin, so allergic reactions are possible, particularly in people sensitive to Pistacia species (pistachio, mastic) or to other resins. Safety in pregnancy and breastfeeding is not established. The important warning is clinical, not toxicological: H. pylori infection causes ulcers and increases gastric cancer risk and must be treated with proper eradication therapy — using mastic instead delays effective treatment. Persistent dyspepsia with alarm features (weight loss, vomiting, anemia, age over 55 at onset) needs endoscopy, not a supplement.

Scientific references

Where to buy

Vitacost, Root2, Chios Mastic Gum, 60 Capsules (500 mg per Capsule)

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