Mastic gum is sold as a natural answer to stomach bacteria, and a 1998 medical letter gave it that reputation. The best human trial then tested it against 2 antibiotics.
Mastic alone cleared the infection in 4 or 5 of 13 patients. The antibiotics cleared 10.
Quick Answer: Does Mastic Gum Get Rid of H. pylori?
Not reliably. It kills H. pylori in the laboratory, but not dependably in people. In 2003, 4 g a day for 14 days cleared 0 of 8 patients. In 2010, mastic alone cleared 4 or 5 of 13, against 10 of 13 on triple therapy. It is not a replacement for antibiotics.
Key Takeaways
- In a dish, mastic killed 90% of H. pylori strains tested.
- In 2003, 4 g a day for 14 days cleared 0 of 8.
- In 2010, mastic alone cleared 4 or 5 of 13 patients.
- Standard triple therapy cleared 10 of 13 in that same trial.
- Added to 4-drug therapy in 2026, it did not reach significance.
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Where the Claim Came From
The H. pylori story is real, and it starts in the laboratory rather than in patients.
- 1998: A New England Journal of Medicine letter titled Mastic gum kills Helicobacter pylori.
- 2001: Clinical isolates tested in a microdilution assay.
- 2007: A mouse study of a purified extract over 3 months.
- What they share: None of them treated a person.
In the 2001 assay mastic killed 50% of strains at 125 micrograms per ml and 90% at 500.[1]Bactericidal activity of Pistacia lentiscus mastic gum against Helicobacter pylori — Journal of Chemotherapy (2001) View source The resin itself is described in what mastic actually is.
Fewer Bacteria, Same Inflammation
The mouse study is the bridge between the dish and people, and it contains the first warning sign.
- Colonisation: About 30-fold lower after 3 months.
- Gastritis: No attenuation of the chronic inflammation.
- Active compound: Isomasticadienolic acid, a triterpenic acid.
- Lesson: Fewer bacteria is not the same as a healed stomach.
The authors reported the reduction in colonisation alongside no attenuation of the chronic gastritis itself.[2]In vitro and in vivo activities of Chios mastic gum extracts and constituents against Helicobacter pylori — Antimicrobial Agents and Chemotherapy (2007) View source Whether the resin is safe for you is a separate question, covered in the allergy and safety picture.
The Three Human Studies
Only 3 human studies tested mastic against the infection directly, and they are worth seeing together.
| Year | Design | Result |
|---|---|---|
| 2003 | Mastic 1 g 4 times daily, 14 days, 9 recruited | 0 of 8 cleared |
| 2010 | Randomized pilot, 4 arms of 13 | Mastic alone 4 or 5 of 13 |
| 2026 | Mastic added to bismuth quadruple therapy | 85% vs 67%, not significant |
In 2003 every completed patient stayed positive on the breath test, with no change in the scores at all.[3]Mastic gum has no effect on Helicobacter pylori load in vivo — Journal of Antimicrobial Chemotherapy (2003) View source
The 2010 Trial, Arm by Arm
This is the only trial that put mastic and standard therapy side by side, so it carries the most weight.
| Arm of the 2010 randomized pilot | H. pylori cleared |
|---|---|
| Mastic 350 mg, 3 times a day, 14 days | 4 of 13 |
| Mastic 1.05 g, 3 times a day, 14 days | 5 of 13 |
| Mastic 350 mg plus pantoprazole, 14 days | 0 of 13 |
| Pantoprazole plus 2 antibiotics, 10 days | 10 of 13 |
The mastic arms showed trends that did not reach statistical significance, while the antibiotic arm did.[4]The effect of mastic gum on Helicobacter pylori: a randomized pilot study — Phytomedicine (2010) View source The combination with pantoprazole cleared nobody, which no one has explained.
The same resin did better against indigestion symptoms, as the indigestion evidence shows.
As an Add-On, Not a Replacement
The newest trial asked a better question: whether mastic helps alongside antibiotics.
- Design: 64 adults, single-blind, randomized.
- Both arms: 14 days of bismuth quadruple therapy.
- Eradication: 85% with mastic, 67% without.
- Verdict: Not statistically significant, p = 0.19.
Dyspepsia symptom scores did improve more in the mastic arm, and both regimens were well tolerated.[5]Mastic gum as an adjunct therapy to standard bismuth quadruple therapy for Helicobacter pylori eradication: A randomized single-blind pilot study — Indian Journal of Gastroenterology (2026) View source The current American guideline prefers 14 days of bismuth quadruple therapy for untreated infection.[6]ACG Clinical Guideline: Treatment of Helicobacter pylori Infection — American Journal of Gastroenterology (2024) View source
What About Ulcers?
A 1984 double-blind trial is often quoted, and it predates routine H. pylori testing.
- Patients: 38 with endoscopically proven duodenal ulcer.
- Dose: 1 g of mastic a day for 2 weeks.
- Healing: 70% on mastic, 22% on placebo.
- Caveat: Ulcer care has changed completely since then.
Mastic was well tolerated with no side effects in that trial.[7]A double-blind controlled clinical trial of mastic and placebo in the treatment of duodenal ulcer — Clinical and Experimental Pharmacology and Physiology (1984) View source Anyone with a known ulcer today needs a clinician and a test for H. pylori.
A Sensible Position
If you have H. pylori, these terms match what the evidence can support.
- First: Prescribed eradication therapy, then a retest.
- If adding mastic: Tell whoever prescribed the antibiotics.
- Never: Mastic instead of antibiotics.
- Expect at best: Some relief of dyspepsia symptoms.
Sold on those terms, our mastic gum capsules make no eradication claim, because the trials do not support one.
Speak to a Clinician Before Taking Mastic Gum If
- You have tested positive for H. pylori, which needs prescribed treatment and 1 retest
- You have black stools, vomiting, weight loss or difficulty swallowing
- You react to pistachio, cashew, Mastisol skin adhesive or other tree resins
- You are pregnant or breastfeeding, where the EMA does not recommend mastic
- Your indigestion lasts longer than 2 weeks, the EMA limit for self-care
Frequently Asked Questions
Can mastic gum cure H pylori? +
Not reliably. On its own it cleared 4 or 5 of 13 patients in the best trial, against 10 of 13 on triple therapy.
How long does mastic gum take to cure H. pylori? +
Trials ran for 14 days, and most patients were still positive afterwards. No course length turned mastic into a dependable cure.
What kills H. pylori permanently? +
Prescribed eradication therapy, confirmed by a retest. The 2024 American guideline prefers 14 days of bismuth quadruple therapy.
Can chewing mastic gum help with H. pylori infection? +
No trial tested chewing gum for H. pylori. The 3 human studies all used swallowed mastic, and their results were weak.
How to take mastic gum for gastritis? +
There is no trial in gastritis as such. In mice, mastic lowered bacteria about 30-fold but did not reduce the gastritis.
Can I take mastic gum with omeprazole? +
The EMA lists 0 known interactions, but in 2010 mastic plus pantoprazole cleared 0 of 13. Ask whoever prescribed the acid blocker.
Does mastic gum heal stomach ulcers? +
A 1984 trial of 38 patients reported 70% healing against 22% on placebo. Ulcer care has changed completely since then.
Can mastic gum be taken with antibiotics for H. pylori? +
A 2026 pilot of 64 adults added it to quadruple therapy: 85% vs 67% cleared, not significant, and well tolerated.
Should I retest after taking mastic gum? +
Yes, if you had H. pylori. The trials retested by breath test 5 to 6 weeks after finishing, which is the only way to know.
Why did the 1998 letter say mastic kills H. pylori? +
It reported laboratory findings. Later assays killed 90% of strains in a dish, which did not carry over to patients.
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