Getting rid of gastritis depends on what’s causing it, but most cases improve within a few weeks once you remove the trigger and give your stomach lining time to heal. Acute gastritis from a short-term irritant like alcohol or painkillers often resolves on its own once you stop the exposure. Chronic gastritis, caused by ongoing infection or autoimmune issues, requires targeted treatment but still responds well in most people.
Identify What’s Causing It
Gastritis isn’t a single disease. It’s inflammation of your stomach lining, and the fix depends entirely on the source. The most common causes are overuse of anti-inflammatory painkillers (ibuprofen, aspirin, naproxen), excessive alcohol, and infection with a bacterium called H. pylori. Less common causes include autoimmune conditions where your immune system attacks your stomach lining, severe stress from illness or surgery, and bile reflux.
If you’ve been taking over-the-counter painkillers regularly, that’s the first place to look. If your symptoms appeared without an obvious trigger and have lingered for weeks, H. pylori infection is worth testing for. Your doctor can check with a simple breath test, stool test, or blood test.
Stop the Irritant
For gastritis caused by painkillers or alcohol, the most effective step is also the simplest: stop using the substance. Acute gastritis caused by NSAIDs or alcohol often begins to resolve once you eliminate the source. Your stomach lining is remarkably good at repairing itself when the damage stops.
If you rely on painkillers for chronic pain, ask your doctor about switching to acetaminophen (Tylenol), which is far less likely to irritate the stomach lining. For people who must stay on anti-inflammatory drugs for conditions like arthritis, an acid-reducing medication taken alongside the painkiller can help protect the stomach.
Medications That Reduce Acid and Promote Healing
Lowering stomach acid gives inflamed tissue the chance to repair. There are three main categories of acid-reducing medication, and they work differently.
Proton pump inhibitors (PPIs) are the most powerful option. They shut down the acid-producing pumps in your stomach cells, providing long-lasting suppression. Most people need only one dose per day, taken 30 to 60 minutes before their first meal, for 4 to 8 weeks. Common over-the-counter versions include omeprazole (Prilosec) and esomeprazole (Nexium). Effectiveness is similar across all PPIs.
H2 blockers like famotidine (Pepcid) reduce acid by a different mechanism and work more quickly, making them useful for on-demand relief. They’re less potent than PPIs overall, so they’re better suited for milder cases or as a complement to other treatment.
Antacids (Tums, Maalox) neutralize acid that’s already in your stomach and provide the fastest symptom relief. They’re not a primary treatment on their own, but they can help bridge the gap while longer-acting medications kick in.
Treating H. pylori Infection
If testing confirms H. pylori, you’ll need a course of antibiotics to clear the bacteria. Current guidelines from the American College of Gastroenterology recommend a 14-day regimen combining an acid-suppressing medication with bismuth (the active ingredient in Pepto-Bismol) and two antibiotics. This four-drug approach has replaced the older three-drug regimen that relied on clarithromycin, because resistance to that antibiotic has made it unreliable. Eradication rates with clarithromycin-resistant strains drop to roughly 30%.
The 14-day treatment involves taking multiple pills several times a day, which can feel like a lot, but completing the full course is critical. Stopping early allows resistant bacteria to survive and makes a second round of treatment harder. Your doctor will typically retest you afterward to confirm the infection is gone.
Foods That Help (and Hurt)
Diet won’t cure gastritis on its own, but it can meaningfully speed healing and reduce day-to-day discomfort. The general principle is simple: favor foods that are low in acid, low in fat, and high in fiber, while avoiding anything that stimulates excess acid production or directly irritates inflamed tissue.
Foods worth building your meals around:
- Leafy greens like cabbage, kale, and spinach, which have natural anti-inflammatory properties
- Fatty fish like salmon, mackerel, and sardines
- Nuts like almonds and walnuts
- Fresh berries
- Ginger and turmeric, both as foods and teas
- Probiotic-rich foods like natural yogurt, kefir, sauerkraut, kimchi, and miso
Foods to cut back on or avoid while your stomach heals:
- Coffee and alcohol, both strong acid stimulants
- Tomatoes and citrus fruits, which are highly acidic
- Spicy foods
- Fatty and fried foods, including full-fat dairy and red meat
- Carbonated drinks
You don’t necessarily need to eliminate every item on the “avoid” list permanently. Many people find they can gradually reintroduce these foods once the inflammation has resolved. During active healing, though, removing them makes a noticeable difference in symptoms like burning, nausea, and bloating.
How Long Recovery Takes
Acute gastritis from a short-term cause, like a weekend of heavy drinking or a brief stretch of too many ibuprofen, often heals within days to a couple of weeks once the irritant is gone. Your stomach lining regenerates quickly when conditions allow it.
Chronic gastritis takes longer. If you’ve had ongoing inflammation for months or years, the tissue damage runs deeper, and recovery on acid-reducing medication typically takes 8 to 12 weeks. H. pylori-related gastritis requires the full antibiotic course plus additional healing time after the infection clears. Autoimmune gastritis, the least common type, is managed long-term since the underlying immune response doesn’t fully resolve.
Zinc L-Carnosine for Stomach Lining Repair
One supplement with growing clinical support is zinc L-carnosine, a compound that sticks preferentially to inflamed areas of the stomach lining. It works by reducing inflammation, acting as an antioxidant, and boosting mucus production, which is your stomach’s natural protective barrier. A published case series in the American Journal of Case Reports documented significant improvement in chronic atrophic gastritis when patients took 39.5 mg twice daily for at least 12 months. Improvements showed up not just in symptoms but in tissue biopsies and blood markers of gastric function.
Zinc L-carnosine is available over the counter and is generally taken on an empty stomach, with at least an hour of fasting afterward. It’s not a replacement for acid-reducing medication or antibiotics when those are needed, but it can serve as a useful addition, particularly for people with chronic or slow-healing gastritis.
Warning Signs That Need Urgent Attention
Most gastritis is uncomfortable but not dangerous. However, some symptoms signal bleeding in the stomach, which requires immediate medical care. Get help right away if you notice black or tarry stools, red or maroon blood in your stool, vomit that contains red blood or looks like coffee grounds, or if you feel unusually lightheaded, short of breath, or exhausted alongside abdominal pain. These signs can indicate an ulcer or erosion that has broken through to a blood vessel, and they won’t resolve with dietary changes alone.