Peptic Ulcer Disease: What Causes It and How Antibiotics and Acid Reducers Fix It

Peptic Ulcer Disease: What Causes It and How Antibiotics and Acid Reducers Fix It
27 November 2025 Andy Regan

Most people think stomach ulcers are caused by stress or spicy food. That’s what we were told for decades. But here’s the truth: peptic ulcer disease is mostly caused by two things you can’t control - a bacteria called Helicobacter pylori or long-term use of common painkillers. And the good news? It’s one of the most treatable digestive conditions out there.

What Exactly Is a Peptic Ulcer?

A peptic ulcer isn’t just a sore in your stomach. It’s a deep break in the lining of your stomach or the first part of your small intestine (the duodenum). This isn’t a surface scratch - it cuts through the protective mucosal layer and reaches the muscle layer underneath. That’s why it hurts so much. Your stomach acid, which normally digests food, starts eating away at the unprotected tissue.

About 8 million people worldwide have this condition right now. The pain? Often a burning or gnawing feeling right under your breastbone. It gets worse when your stomach is empty and sometimes improves after you eat. Other signs include nausea, bloating, feeling full fast, and intolerance to fatty foods. In serious cases, you might vomit blood, pass black or tarry stools, or lose weight without trying. These aren’t normal stomach bugs - they’re red flags.

The Two Main Culprits: H. pylori and NSAIDs

There are two big reasons you get a peptic ulcer. The first is Helicobacter pylori - a spiral-shaped bacteria that lives in your stomach lining. It was discovered in 1982 by two Australian doctors, Barry Marshall and Robin Warren, who later won the Nobel Prize for it. Before that, doctors thought ulcers were just from too much acid. Turns out, H. pylori weakens your stomach’s natural defenses. It burrows into the mucus layer, causes inflammation, and tricks your body into making more acid. About half of people with duodenal ulcers and 30-50% with gastric ulcers have this bacteria.

The second major cause? Nonsteroidal anti-inflammatory drugs - NSAIDs. That’s aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), and others. These drugs block enzymes that protect your stomach lining. When you take them daily for arthritis, back pain, or headaches, you’re slowly removing your stomach’s armor. Today, NSAIDs cause more than half of all peptic ulcers, especially in older adults who rely on them for chronic pain.

Here’s the key difference: if H. pylori is the cause, your ulcer will likely come back unless you kill the bacteria. If it’s from NSAIDs, stopping the drug often lets the ulcer heal - but if you keep taking them, it won’t.

How Doctors Diagnose It

You can’t diagnose a peptic ulcer with a blood test alone. The gold standard is an endoscopy - a thin, flexible tube with a camera is passed down your throat so the doctor can see the ulcer directly. They’ll also take tiny tissue samples to test for H. pylori.

Other tests include a breath test (you drink a solution and breathe into a bag - if H. pylori is present, it breaks down the substance and you’ll exhale a detectable gas), a stool test for bacterial proteins, or a blood test for antibodies. But blood tests can’t tell if you have an active infection - only if you’ve ever been exposed. That’s why breath and stool tests are preferred for diagnosis and follow-up.

Antibiotics: The Real Cure for H. pylori

If H. pylori is the problem, antibiotics are the only way to cure it. But you don’t just take one pill. You need a combo - usually two antibiotics plus a stomach acid blocker. This is called triple therapy. The most common version includes amoxicillin and clarithromycin with a proton pump inhibitor (PPI) like omeprazole or esomeprazole.

The treatment lasts 7 to 14 days. You’ll take these pills 2 or 3 times a day, often before meals. Timing matters: PPIs work best if taken 30 to 60 minutes before eating. Missing doses or stopping early is the #1 reason treatment fails. Studies show that if you don’t finish the full course, the bacteria can become resistant - making future treatments harder.

Side effects are common. Many people report a metallic taste, especially with metronidazole. Nausea, diarrhea, and bloating happen too. But these usually go away after you stop the meds. And here’s the payoff: once H. pylori is gone, your ulcer recurrence rate drops from 70% to just 10%. That’s the difference between getting it back every year versus rarely ever again.

In areas where clarithromycin resistance is high (now over 35% in the U.S.), doctors are switching to quadruple therapy. That adds bismuth subsalicylate (like Pepto-Bismol) to the mix. Newer drugs like vonoprazan, approved by the FDA in January 2023, are showing even better results - up to 90% success in killing H. pylori compared to 75-85% with traditional PPIs.

A doctor performs a breath test for H. pylori in a cozy clinic.

Acid-Reducing Medications: Healing the Damage

Whether your ulcer is from H. pylori or NSAIDs, you need to reduce stomach acid to let the lining heal. That’s where acid-reducing meds come in. There are two main types: proton pump inhibitors (PPIs) and H2 blockers.

PPIs are the first choice. They shut down the acid pumps in your stomach cells. Common ones include omeprazole (Prilosec), esomeprazole (Nexium), lansoprazole (Prevacid), pantoprazole (Protonix), and rabeprazole (AcipHex). They work longer and stronger than H2 blockers - up to 24 to 72 hours per dose. For duodenal ulcers, controlling nighttime acid is especially important, and PPIs do that better than anything else.

H2 blockers like famotidine (Pepcid AC), cimetidine (Tagamet), and nizatidine (Axid) are older. They block histamine, which signals acid production. They’re still used sometimes, especially if someone can’t tolerate PPIs. But they only last 10 to 12 hours and aren’t as effective at healing deep ulcers.

Patients often feel better within days. But healing takes time. Most ulcers need 4 to 8 weeks of PPI therapy to fully close. Even if the pain is gone, you shouldn’t stop the medication early.

What About Long-Term PPI Use?

Some people worry about taking PPIs for months or years. And there are real concerns. The FDA has issued warnings about long-term use potentially increasing the risk of bone fractures, low magnesium levels, and vitamin B12 deficiency. There’s also a small increased risk of Clostridium difficile infection - a serious gut infection that causes severe diarrhea.

But here’s the balance: for someone with a history of ulcers, the risk of another bleed or perforation far outweighs these rare side effects. If you need long-term acid suppression, your doctor will use the lowest effective dose. Some people can taper off safely after healing. Others, especially those who must keep taking NSAIDs, may need to stay on a low-dose PPI indefinitely.

Don’t quit PPIs cold turkey. Some people get rebound acid hypersecretion - their stomach overproduces acid after stopping, making symptoms worse. Always talk to your doctor before stopping.

NSAID Users: What to Do Instead

If your ulcer was caused by NSAIDs, the best fix is to stop them. But if you have arthritis or chronic pain, that’s not always possible. In those cases, your doctor might recommend switching to a COX-2 inhibitor like celecoxib (Celebrex), which is gentler on the stomach. Or they might prescribe misoprostol - a synthetic version of a natural stomach-protecting substance - to prevent ulcers from forming.

Another option? Use acetaminophen (Tylenol) for pain relief. It doesn’t hurt your stomach lining like NSAIDs do. Just don’t exceed 3,000 mg a day - too much can damage your liver.

A retired man enjoys tea without NSAIDs, celebrating ulcer recovery.

Lifestyle Changes That Actually Help

Medication works best when paired with smart habits.

  • Quit smoking. Smokers are 2 to 3 times more likely to get ulcers and 2 times more likely to have them come back.
  • Limit alcohol. More than 3 drinks a day increases your risk by 300%.
  • Avoid spicy food? Not necessary. No solid evidence that spices cause ulcers - but if they trigger your symptoms, skip them.
  • Manage stress. Stress doesn’t cause ulcers, but it can make pain feel worse and slow healing.

What If the Ulcer Doesn’t Heal?

If your ulcer doesn’t improve after 8 weeks of treatment, it’s called a refractory ulcer. The top three reasons? You didn’t take your meds correctly, you have antibiotic-resistant H. pylori, or you’re still taking NSAIDs. Your doctor may order another endoscopy, test for different strains of bacteria, or check for other causes like Zollinger-Ellison syndrome - a rare condition that makes your stomach overproduce acid.

Don’t ignore this. A stubborn ulcer can lead to bleeding, perforation (a hole in your stomach), or even stomach cancer in rare cases.

The Future of Ulcer Treatment

Research is moving fast. By 2025, doctors expect to use antibiotic resistance testing before prescribing treatment - meaning you’ll get the right combo on the first try. Vonoprazan is already changing the game in Japan and the U.S. And as H. pylori becomes rarer in developed countries (down from 60% in 1980 to 25% today), NSAID-related ulcers will keep rising, especially as the population ages.

The takeaway? Peptic ulcer disease isn’t a life sentence. It’s a solvable problem. With the right diagnosis, targeted antibiotics, and smart use of acid blockers, most people heal completely and never have another ulcer.

Can stress cause a peptic ulcer?

No, stress doesn’t cause peptic ulcers. For years, people thought emotional stress or spicy food led to ulcers, but that’s outdated. The two main causes are H. pylori bacteria and long-term use of NSAIDs. Stress can make symptoms feel worse or slow healing, but it won’t create an ulcer on its own.

How long does it take for a peptic ulcer to heal?

Most ulcers start feeling better within days of starting treatment. But full healing takes time - usually 4 to 8 weeks. PPIs help reduce acid so your stomach lining can repair itself. Even if your pain disappears, you should finish the full course of medication. Stopping early increases the risk of the ulcer coming back.

Are there natural remedies for peptic ulcers?

There’s no proven natural cure for peptic ulcers. While some studies look at honey, probiotics, or cabbage juice, none replace medical treatment. H. pylori needs antibiotics to be killed. Acid suppression requires proven medications like PPIs. Relying on home remedies can delay proper treatment and lead to serious complications like bleeding or perforation.

Can I take ibuprofen if I’ve had a peptic ulcer?

It’s risky. If you’ve had a peptic ulcer, taking ibuprofen or other NSAIDs increases your chance of another ulcer - and possibly a dangerous bleed. Talk to your doctor first. They might recommend acetaminophen (Tylenol) for pain relief instead. If you must use NSAIDs, your doctor may prescribe a long-term low-dose PPI to protect your stomach.

Do I need to get tested for H. pylori after treatment?

Yes, if your ulcer was caused by H. pylori, you should be tested again after treatment - usually 4 weeks after finishing antibiotics. This confirms the bacteria is gone. The best tests are the stool antigen test or breath test. Blood tests aren’t reliable for this because they show past exposure, not current infection.

peptic ulcer H. pylori antibiotics for ulcers PPIs acid-reducing medications

13 Comments

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    Dominic Fuchs

    November 28, 2025 AT 05:30

    So we spent decades blaming stress and spicy food and now it's just bacteria and pills? Classic. The real villain was always the medical establishment's stubbornness
    And now we get triple therapy like we're fighting a war in our stomach
    Still beats the old days of drinking milk and praying

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    Asbury (Ash) Taylor

    November 28, 2025 AT 17:09

    It is truly remarkable how far we have come in our understanding of gastrointestinal pathology. The discovery of Helicobacter pylori represents one of the most paradigm-shifting breakthroughs in modern medicine.
    It is imperative that patients adhere to the prescribed antibiotic regimens with diligence, as noncompliance may engender antimicrobial resistance, a global public health crisis of escalating magnitude.
    Furthermore, the judicious use of proton pump inhibitors remains a cornerstone of therapeutic success.
    Let us not underestimate the power of evidence-based practice.

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    Kenneth Lewis

    November 29, 2025 AT 21:33

    so h pylori is the real culprit?? wow i always thought it was just my burrito habit
    also ppi's are a godsend but man do they mess with your gut
    also why do i feel like i need to take a nap after every pill??

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    Jim Daly

    November 30, 2025 AT 06:44

    YALL ARE OVERCOMPLICATING THIS
    IT'S JUST A BACTERIA AND YOU TAKE PILLZ
    WHY DO DOCTORS MAKE EVERYTHING SO COMPLICATED
    AND WHY DO WE STILL USE WORDS LIKE 'PROTON PUMP INHIBITOR' WHEN THEY COULD JUST SAY 'ACID STOPPER'
    AND NO I DON'T CARE ABOUT THE 'QUADRUPLE THERAPY' I JUST WANT TO FEEL BETTER
    AND YES I STILL TAKE IBUPROFEN BECAUSE MY BACK HURTS AND I'M NOT STOPPING

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    Tionne Myles-Smith

    December 1, 2025 AT 19:33

    This is actually such a relief to read! I’ve been scared to even eat toast for months thinking I was doing something wrong
    Now I know it’s not my fault and it’s fixable
    And the part about antibiotics working? That’s hope right there
    Also, I’m telling my mom to stop telling me to drink chamomile tea for ulcers - she’s gonna be so mad but it’s true
    Thank you for this

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    Leigh Guerra-Paz

    December 2, 2025 AT 07:08

    Oh my goodness, I just read this entire post and I’m so grateful - really, truly - because I’ve been dealing with this for years and I thought I was just ‘sensitive’ or ‘stress-prone’ or ‘bad at eating’
    But now I know it’s H. pylori - and that it can be cured - and that I’m not broken - and that I don’t have to live with this gnawing pain forever
    Also, I’m going to start taking my PPIs at 7 a.m. before breakfast, just like they said - and I’m going to write myself little sticky notes to remember to finish the whole course - and I’m going to stop drinking wine after dinner - and I’m going to call my doctor about the breath test -
    Thank you for writing this - you’ve changed my life.
    And if you’re reading this and you’re scared - you’re not alone - we’re all in this together - and healing is possible - I believe in you.

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    Jordyn Holland

    December 4, 2025 AT 02:59

    Of course it's H. pylori - only people who think 'natural remedies' and 'stress causes ulcers' would still be confused
    And let’s be honest - if you're still taking NSAIDs after being told not to, you're not just ignorant - you're actively choosing pain
    And PPIs? Of course they have risks - but your refusal to take responsibility for your health is the real risk
    Maybe if you didn't eat like a garbage disposal and took care of yourself, you wouldn't need 3 antibiotics and a pharmacy in your cabinet

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    Jasper Arboladura

    December 4, 2025 AT 20:31

    Actually, the real issue is that most studies on H. pylori eradication are funded by Big Pharma - the success rates are inflated
    And PPIs? They suppress acid - yes - but they also interfere with nutrient absorption, gut microbiota, and even gastric motility
    There are far more elegant solutions - like dietary alkalinity, herbal bitters, and vagal tone optimization - but no one wants to talk about those
    Because the pharmaceutical complex needs you dependent
    And the fact that you're impressed by triple therapy? That's the real tragedy

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    Joanne Beriña

    December 4, 2025 AT 21:50

    So now we’re telling Americans they have a foreign bacteria in their stomach? Who let this happen?
    And now we’re giving them antibiotics like they’re in a third world country?
    What about American-made solutions?
    Why can’t we just develop a new NSAID that doesn’t hurt the stomach?
    Why are we importing problems from Europe and Asia?
    This is why our healthcare system is failing - we’re too busy treating bacteria we didn’t even know existed instead of fixing the real issues
    We need American ulcers and American cures

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    ABHISHEK NAHARIA

    December 6, 2025 AT 08:37

    It is interesting to observe the Western medical paradigm shift regarding peptic ulcer disease
    However, in the Indian subcontinent, traditional Ayurvedic formulations such as Yashtimadhu and Amalaki have been used for centuries to soothe gastric mucosa
    Modern science merely validates what ancient systems understood intuitively
    Yet we still prioritize synthetic antibiotics over holistic balance
    Perhaps the future lies not in eradication but in symbiosis

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    Hardik Malhan

    December 7, 2025 AT 06:38

    Important to note that H. pylori colonization rates vary significantly by geography and socioeconomic factors
    Also, antibiotic resistance patterns are not uniform across regions
    Therefore, empirical triple therapy may not be optimal in high-resistance zones
    Stool antigen testing post-treatment is recommended but underutilized in primary care
    And yes, NSAID-induced ulcers remain the leading cause in elderly populations
    Need more real-world data on adherence

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    Casey Nicole

    December 8, 2025 AT 22:41

    So now we’re telling people their stomach is full of bacteria and they need drugs to kill it
    And then we give them more drugs to fix the side effects of the drugs
    And then we say don’t worry about the long-term side effects
    But don’t stop the drugs
    And don’t use ibuprofen
    But if you do, take another drug
    And now we’re telling you to stop drinking wine and eat kale
    What even is this
    I just wanted to eat tacos and not feel like I’m dying
    And now I have to be a scientist just to survive lunch
    And I’m supposed to be grateful?
    Why does medicine always feel like a trap?

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    Dominic Fuchs

    December 10, 2025 AT 04:13

    Asbury you sound like a medical textbook that got lost in a TED Talk
    And Jasper you’re right about Big Pharma but you’re also ignoring that 70% of people with untreated H. pylori get re-ulcered
    So yes the system is broken but antibiotics still work
    And if you want to live to 70 you’ll take them
    And if you want to argue about Ayurveda go write a blog
    I just want to eat pizza without crying

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