Getting rid of gastritis depends on what’s causing it. The stomach lining is inflamed, and treatment targets the specific trigger, whether that’s a bacterial infection, painkillers, alcohol, or something else. Acute cases often resolve on their own within days once the irritant is removed, while chronic gastritis requires medical treatment and can take weeks or months to fully heal.
Identify the Cause First
Gastritis isn’t one condition with one fix. The most common causes are infection with H. pylori bacteria, regular use of anti-inflammatory painkillers like ibuprofen or aspirin, and heavy alcohol use. Less common triggers include autoimmune conditions, bile reflux, and severe physical stress from illness or surgery. Treatment that works for one cause won’t necessarily help another, so figuring out what’s driving the inflammation is the essential first step.
Doctors typically diagnose gastritis through an upper endoscopy, where a flexible tube with a camera is guided into the stomach. During the procedure, small tissue samples are taken from the stomach lining and examined under a microscope. This confirms whether gastritis is present, how severe it is, and often reveals the underlying cause. Blood tests or breath tests can also detect H. pylori infection without an endoscopy.
Treating H. Pylori Infection
If H. pylori bacteria are behind your gastritis, you’ll need a combination of antibiotics and acid-reducing medication to clear the infection. The American College of Gastroenterology recommends a 14-day course of four medications taken together: an acid-suppressing drug twice daily, tetracycline four times daily, metronidazole three or four times daily, and a bismuth compound four times daily. This regimen is intensive, but it’s the most effective approach for patients who haven’t been treated before.
The antibiotic schedule is demanding, and side effects like nausea, metallic taste, and diarrhea are common. Finishing the full course matters. Stopping early allows surviving bacteria to develop resistance, making a second round of treatment harder. After completing the antibiotics, your doctor will typically retest you to confirm the infection is gone. Once H. pylori is eradicated, the stomach lining usually heals within a few weeks to a couple of months with continued acid suppression.
Stopping the Damage From Painkillers
Anti-inflammatory drugs like ibuprofen, naproxen, and aspirin are a major cause of gastritis because they block the protective compounds your stomach lining produces. If painkillers are the culprit, the most effective solution is to stop taking them. For people who can’t stop, such as those on low-dose aspirin for heart protection, taking an acid-reducing medication alongside the painkiller can help prevent further damage.
Risk factors that make painkiller-related stomach damage more likely include being over 64, having a history of stomach problems, and taking aspirin at the same time as another anti-inflammatory. If you fall into any of these categories and need to continue using these drugs, your doctor may recommend a daily acid suppressor as a preventive measure. Switching to a different class of pain reliever is another option worth discussing.
Medications That Help Your Stomach Heal
Regardless of the cause, most gastritis treatment includes medication to reduce stomach acid and give the lining time to repair itself. Three categories of drugs are used, and they work differently.
Proton pump inhibitors (PPIs) are the strongest option. They significantly reduce acid production and are the standard choice for healing gastric ulcers and erosive gastritis. A typical course for a benign gastric ulcer is 4 to 8 weeks, with an additional 4 to 8 weeks if healing isn’t complete. These are available over the counter at lower doses and by prescription at higher ones.
H2 blockers are a step down in potency. They take about an hour to start working and provide relief lasting 4 to 10 hours. They’re useful for milder cases or as a supplement to other treatment. Antacids, the most basic option, neutralize acid that’s already in your stomach. They work faster than H2 blockers but wear off sooner. Antacids are best for quick, temporary relief rather than long-term healing.
Dietary Changes That Reduce Symptoms
What you eat won’t cure gastritis on its own, but it can significantly affect how you feel during recovery. Certain foods increase acid production or directly irritate inflamed tissue, making symptoms worse. Others are easier on the stomach and support healing.
Foods worth avoiding or limiting:
- Spicy seasonings like red pepper, black pepper, onion powder, and garlic powder, which can irritate the stomach lining
- Citrus fruits such as oranges, grapefruit, and tomatoes, which promote acid reflux
- Full-fat dairy including whole milk, cream, and cheese, as the high fat content can be harder to digest
- Processed and refined foods like white bread and crackers, which are low in fiber and can worsen indigestion
- Fatty meats such as bacon, sausages, and ground beef
- Coffee, other caffeinated drinks, and alcohol, all of which increase acid secretion
Focus instead on lean proteins like chicken and fish, cooked vegetables, whole grains, and non-citrus fruits. Eating smaller, more frequent meals rather than large ones puts less strain on your stomach at any given time.
Habits That Speed Recovery
Alcohol is one of the most direct irritants to an already inflamed stomach lining. Even moderate drinking can slow healing, so cutting it out entirely during recovery makes a meaningful difference. Smoking also increases stomach acid and impairs the lining’s ability to repair itself.
Meal timing matters, especially if your symptoms worsen at night. Eating your last meal at least two to three hours before lying down gives your stomach time to empty. When you do sleep, lying on your left side helps acid clear from the esophagus faster than sleeping on your back or right side, according to research published by Harvard Health. Elevating your upper body with a wedge pillow can also help if acid reflux is part of the picture.
Stress doesn’t cause gastritis directly, but it increases acid production and can intensify symptoms. Probiotics show some promise for gastritis caused by bacterial infection, though the evidence is still limited. They’re generally safe to try alongside conventional treatment.
Acute vs. Chronic: What to Expect
Acute gastritis is sudden and temporary. If it was triggered by a night of heavy drinking, a brief stint on painkillers, or a short-lived infection, the stomach lining typically repairs itself once the irritant is gone. Recovery can take anywhere from a few days to a couple of weeks.
Chronic gastritis is a different situation. It develops gradually, sometimes over years, and you may not even notice symptoms until significant damage has occurred. It doesn’t resolve on its own. Treatment requires identifying and addressing the underlying cause, combined with weeks or months of acid suppression to allow deeper tissue damage to heal. Regular follow-up is important because chronic gastritis, particularly the atrophic type where the lining thins over time, carries a modestly elevated long-term risk. A large observational study published in The BMJ found that within 20 years of diagnosis, roughly 1 in 50 people with atrophic gastritis developed stomach cancer, compared to about 1 in 256 people with normal stomach lining. That risk is still small in absolute terms, but it’s why doctors monitor chronic gastritis and treat it rather than ignore it.
Putting It All Together
The path to getting rid of gastritis follows a clear sequence: identify the cause, remove the trigger, reduce acid while the lining heals, and adjust your diet and habits to support recovery. For most people, this means a combination of medication and lifestyle changes sustained over several weeks. If your symptoms haven’t improved after two weeks of over-the-counter acid reducers and dietary adjustments, or if you notice blood in your stool, unexplained weight loss, or severe pain, those are signs that something more targeted is needed.