Several natural substances show genuine antibacterial activity against H. pylori in clinical research, but none come close to matching the effectiveness of standard antibiotic therapy. The most studied options, including mastic gum, broccoli sprouts, probiotics, and cranberry, can reduce bacterial load and ease symptoms, but eradication rates with natural approaches alone typically fall between 10% and 40%, compared to roughly 80% or higher with guideline-recommended antibiotic regimens. That gap matters because untreated H. pylori raises the risk of stomach ulcers and gastric cancer over time.
That said, natural strategies still have a role. Some people use them alongside conventional treatment to boost success rates and reduce side effects. Others want to try a natural approach first or manage symptoms while deciding on next steps. Here’s what the evidence actually shows for each option.
Mastic Gum
Mastic gum is a resin from a tree native to the Greek island of Chios, and it’s one of the most frequently cited natural remedies for H. pylori. In a randomized pilot study of 52 patients, those taking 350 mg of pure mastic gum three times daily for 14 days achieved eradication in about 4 out of 13 cases (roughly 30%). A higher dose of 1,050 mg three times daily performed similarly, clearing the infection in 5 out of 13 patients (about 38%). By comparison, the group receiving standard antibiotic triple therapy cleared the infection in 10 out of 13 patients (77%).
Interestingly, combining mastic gum with a stomach acid reducer (a proton pump inhibitor) didn’t improve results at all. Zero patients in that combination group achieved eradication, which suggests the interaction between mastic gum and acid-suppressing medication may actually be counterproductive. If you try mastic gum, taking it on its own rather than with an acid blocker appears to be the better approach based on this data. The typical dose used in research is 350 mg to 1,050 mg, three times per day, for at least two weeks.
Broccoli Sprouts and Sulforaphane
Broccoli sprouts contain high concentrations of a compound called sulforaphane, which kills H. pylori both outside and inside stomach cells. That second part is significant: H. pylori can hide inside the cells lining your stomach, which is one reason it’s so difficult to eliminate and why infections often recur. Sulforaphane penetrates those cells and attacks the bacteria directly. It also works against antibiotic-resistant strains, at least in lab settings.
Beyond direct antibacterial action, sulforaphane triggers your body’s own protective enzymes in stomach tissue. These enzymes help neutralize cancer-promoting compounds, which is relevant because chronic H. pylori infection is a recognized risk factor for stomach cancer. Humans already consume substantial amounts of these compounds through cruciferous vegetables, with intake estimated at up to 100 mg daily among regular consumers. Broccoli sprouts contain 10 to 100 times more sulforaphane precursors than mature broccoli, so eating a small portion of sprouts (about 70 grams, or roughly half a cup) daily is a practical way to get a meaningful dose.
The limitation is that most of the strong evidence comes from lab and animal studies. Human trials have shown reductions in bacterial markers during supplementation, but the bacteria tend to return after you stop eating the sprouts. This makes broccoli sprouts better suited as an ongoing dietary habit or as a complement to treatment rather than a standalone cure.
Probiotics
Probiotics don’t reliably eradicate H. pylori on their own, but they serve two practical purposes: they can modestly improve eradication rates when added to antibiotic therapy, and they significantly reduce the side effects (bloating, diarrhea, nausea) that make antibiotic treatment hard to finish.
The most studied strain is Lactobacillus reuteri DSM 17648, which has been tested in multiple clinical trials. Results vary. Some studies found it boosted eradication rates to around 65% when used with standard therapy, while others showed no significant improvement in clearance but still reported noticeably fewer side effects. One trial found the rate of side effects dropped from 17% in the antibiotic-only group to just 3% in the group adding this probiotic. When used without antibiotics, one study combining the probiotic with licorice extract and calcium carbonate achieved a 54% eradication rate, which is better than most natural approaches but still below standard therapy.
If you’re taking antibiotics for H. pylori, adding a probiotic is a low-risk way to make the treatment more tolerable. Look for products containing L. reuteri DSM 17648 or other well-studied strains, and take them throughout your treatment course and for a few weeks afterward to help restore gut bacteria.
Cranberry
Cranberry works through a different mechanism than most natural remedies. Rather than killing H. pylori directly, a high-molecular-weight compound in cranberry juice blocks the bacteria from sticking to your stomach lining. H. pylori uses a specific adhesion molecule that latches onto sialic acid on the surface of gastric mucus. The cranberry compound interferes with this attachment in a dose-dependent way, meaning more cranberry produces a stronger anti-adhesion effect.
This mechanism acts on the bacteria themselves rather than changing the stomach lining. If the bacteria can’t adhere, they’re more easily flushed from the stomach. Drinking cranberry juice regularly (about 250 ml, or one cup, twice daily) has been used in studies, though it’s worth choosing unsweetened varieties since sugar can worsen stomach irritation. Cranberry is best viewed as a supportive measure rather than a primary treatment, as preventing adhesion doesn’t eliminate bacteria already embedded in the mucus layer.
Dietary Changes That Help
What you eat won’t cure H. pylori, but it can significantly affect how you feel while dealing with the infection. Processed foods loaded with preservatives and additives tend to irritate an already inflamed stomach lining. Spicy foods, alcohol, and caffeine are common triggers for the heartburn and indigestion that H. pylori causes, though individual tolerance varies. Pay attention to which specific foods make your symptoms worse and cut those out.
Foods that actively support your stomach during infection include those rich in fiber (which feeds beneficial gut bacteria), fermented foods like yogurt and kimchi (natural probiotic sources), and cruciferous vegetables like broccoli, cabbage, and cauliflower. Green tea also contains compounds with mild antibacterial properties against H. pylori. A diet centered on whole, unprocessed foods gives your stomach the best environment to heal while you address the infection through other means.
Why Eradication Matters
It’s tempting to manage symptoms and hope the infection resolves on its own, but H. pylori doesn’t work that way. Without treatment, the bacteria persist for decades, continuously inflaming the stomach lining. This chronic inflammation can progress from gastritis to ulcers to, in a small percentage of cases, gastric cancer. The World Health Organization classifies H. pylori as a Group 1 carcinogen for this reason.
Current guidelines from the American College of Gastroenterology recommend a 14-day course of optimized bismuth-based quadruple therapy as the first-line treatment. The older triple therapy regimen that many doctors still prescribe has become much less effective, with eradication rates dropping to around 30% when the bacteria are resistant to clarithromycin. If your doctor suggests antibiotic treatment, asking about susceptibility testing or the newer quadruple regimen can make a real difference in whether the treatment works the first time.
Confirming the Infection Is Gone
Whether you use natural approaches, antibiotics, or a combination, you need to verify that the bacteria are actually gone. Wait at least four weeks after finishing any treatment before retesting. The same tests used for diagnosis work for confirmation: a urea breath test, a stool antigen test, or a stool PCR test. A breath or stool test is preferable to an endoscopy for follow-up since they’re noninvasive and highly accurate.
This step is non-negotiable if you’re relying on natural methods, because symptom improvement doesn’t always mean eradication. You can feel better while the bacteria are simply suppressed rather than eliminated, leaving you at risk for symptom recurrence and long-term complications. If testing shows the infection persists after a natural protocol, that’s the point to seriously consider antibiotic therapy, potentially combined with the natural approaches that reduce side effects and may improve your odds of success.