How do you come off omeprazole and other PPIs safely?

The short answer

Come off omeprazole and other proton pump inhibitors (PPIs) gradually, with your GP’s agreement. Step down to a lower dose, then take it only when needed or swap to an alginate, and keep a rescue plan for flares. Stopping suddenly can cause rebound acid for 2 to 4 weeks. Treating the cause of your reflux makes it far easier.

Key facts

PPIs are usually prescribed for 4 to 8 weeks for indigestion (NHS Cheshire and Merseyside).
Up to 82% of long-term PPI use has no valid medical reason (Medscape).
44% of healthy volunteers had acid symptoms after stopping an 8-week PPI course, compared with 15% on a dummy tablet (Reimer and colleagues, via EPA HERO).
In a 2026 trial of people who had taken PPIs for a median of 9 years, 43% had cut down to fewer than 4 doses a month a year later (Medscape).
Rebound symptoms usually settle within 2 to 4 weeks (NHS Cheshire and Merseyside).

Many people come to see me in clinic in Edinburgh, or online, having taken omeprazole or lansoprazole for five, ten or even fifteen years. Often it was started for a good reason, perhaps a bad spell of heartburn or alongside an anti-inflammatory painkiller, and simply never reviewed. More and more of them tell me their GP has suggested cutting down. If that’s you, this article explains why, and how to make it go well.

What are PPIs, and why are so many people on them long term?

PPIs are medicines that reduce the amount of acid your stomach makes. Common ones in the UK are omeprazole, lansoprazole, pantoprazole and esomeprazole. They’re used to treat reflux, heal inflammation of the food pipe (oesophagitis) and ulcers, and protect the stomach when you take certain medicines. NHS guidance says they’re usually prescribed for 4 to 8 weeks for indigestion symptoms, and should be taken for as short a time as possible (NHS Cheshire and Merseyside).

In practice, many prescriptions simply roll on. In NHS Greater Glasgow and Clyde alone, PPIs are the second most commonly prescribed type of medicine, with nearly 1.5 million prescriptions a year from GP practices (NHS Scotland Right Decisions). A report on new research from Belgium noted that up to 82% of long-term PPI use has no valid medical reason (Medscape).

Why are GPs being asked to deprescribe PPIs?

GPs are being asked to deprescribe PPIs because many people take them for years without a clear reason, and long-term use is linked with health risks. “Deprescribing” means reducing or stopping a medicine that’s no longer needed, or where the risks now outweigh the benefits.

NICE advises using the lowest dose that controls symptoms, trying “as-needed” use where appropriate, and going back to self-care with antacids or alginates where possible (NICE). Local NHS guidance asks GPs to review long-term PPIs at least once a year (NHS North Staffordshire guideline). NHS Scotland asks prescribers to use PPIs only for clear reasons, at the lowest effective dose, for the shortest appropriate time, and to review long-term use regularly (NHS Scotland Right Decisions).

There’s also a simple physiological reason. Stomach acid has an important job. It helps you break down protein, absorb nutrients such as vitamin B12, magnesium and calcium, and kill unwanted microbes in food. Turning it down for years affects all of these.

What are the risks of taking omeprazole long term?

NHS prescribing guidance lists risks linked with taking a PPI for more than a year (NHS North Staffordshire guidance), including:

Clostridioides difficile (C. diff) bowel infection
broken bones, especially at high doses in older people
low sodium, and poorer absorption of vitamin B12 and magnesium
early signs of worsening kidney disease
faster decline in people with mild memory problems or dementia

Other NHS guidance also mentions pneumonia, diarrhoea and kidney inflammation (NHS Somerset).

It’s important to keep this in proportion. Most of the evidence comes from observational studies, and NHS Scotland points out that the absolute risk to any one person is low (NHS Scotland Right Decisions). But if you don’t need a medicine, even a small risk isn’t worth taking.

What is rebound acid, and why does tapering slowly help?

Rebound acid (rebound acid hypersecretion) is a temporary surge in stomach acid after stopping a PPI, which can bring back heartburn even if you no longer need the medicine. Tapering slowly gives your stomach time to readjust, so the surge is gentler and you’re less likely to restart.

This is the part I most want people to understand, because it’s where many attempts to stop go wrong.

When acid is suppressed for a long time, your body tries to make up for it. It makes more of a hormone called gastrin, which encourages the acid-producing cells in your stomach to multiply. While you’re on the PPI, you don’t notice. But when you stop, there are more acid-producing cells than before, and acid can rise above your original level (Journal of Gastroenterology).

The striking thing is that this happens even in people who never had reflux. In a Danish trial, 120 healthy volunteers took either a PPI or a dummy tablet for 8 weeks. After stopping, 44% of the PPI group developed heartburn, acid regurgitation or indigestion, compared with 15% of the dummy group (Reimer and colleagues, via EPA HERO).

So if your heartburn flares after stopping, it doesn’t necessarily mean you still need the tablet. It may be your stomach readjusting. Unfortunately, many people take this as proof they can’t manage without it, restart, and stay on it for years more.

The good news is that this effect is temporary. NHS guidance says symptoms usually settle within 2 to 4 weeks of stopping, and can be managed with an antacid or alginate in the meantime (NHS Cheshire and Merseyside). Gastrin levels usually return to normal within weeks, although changes to the stomach lining may take longer after many years of use (Journal of Gastroenterology).

To be honest about the evidence: one trial in people with stable reflux found that stopping straight away worked about as well as tapering (Journal of Gastroenterology). But NHS guidance notes that while no single method has been proven best, a gradual step-down reduces the risk of rebound and of needing to restart (NHS Somerset). In my experience, people who have taken PPIs for years, at higher doses, or who feel anxious about their symptoms do much better with a slow, supported approach.

How do you taper off a PPI?

There’s no single best schedule, and your GP will advise on your medicine and dose. NHS guidance generally follows these steps:

Check you still need it. Your GP reviews why the PPI was started, and whether that reason still applies.
Step down to a lower dose. NHS guidance says this doesn’t increase the risk of symptoms returning compared with staying on the higher dose (NHS Somerset).
Move to “as needed”, fixed days, or an alginate. In the 2026 Belgian trial, all three approaches worked about equally well (Medscape).
Have a rescue plan. Use an antacid or alginate for flares, and expect symptoms to rise for a few days (NHS Somerset).
Review if symptoms persist. If symptoms last 3 to 7 days and affect daily life, NHS guidance suggests testing for H. pylori, going back to the previous dose, and trying again after 2 to 4 weeks (NHS Somerset).

Approach	What it means
Step down	Moving to a lower daily dose before reducing further
As needed (on demand)	Taking a PPI only on days with symptoms, until they settle
Fixed intermittent	Taking a PPI on set days rather than every day
Alginate	Replacing the PPI with an alginate, which forms a protective raft on the stomach contents

What did the 2026 PPI deprescribing trial find?

A trial presented at United European Gastroenterology Week 2026 followed 629 people in Belgian general practice. They had taken PPIs for a median of 9 years, without a long-term reason to continue (Medscape). The key findings were:

People on high doses first stepped down to a lower dose over a month, and 92% managed this successfully.
They then tried taking a PPI only when needed, taking it on a fixed intermittent schedule, or switching to an alginate. All three worked about equally well.
After a year, 43% were taking fewer than 4 doses a month and were happy to stay that way.
People with more heartburn, indigestion and pain at the start, and those whose symptoms affected their quality of life more, were less likely to succeed.

The researchers concluded that careful symptom assessment and patient-centred support are key (Medscape). That last finding matters. If your symptoms are still active, simply removing the tablet without dealing with the cause is less likely to work. That’s where functional medicine can help.

How does functional medicine help you come off PPIs?

Functional medicine helps by finding and treating the reasons acid is reaching your food pipe, so your body copes better as the PPI is reduced. A PPI turns down the acid, but it doesn’t explain why the reflux started. Working on those drivers makes coming off more natural and more sustainable.

As I explain in my article on whether reflux is caused by too much or too little stomach acid, reflux is usually more about the barrier between the stomach and food pipe than the amount of acid. I work on the underlying drivers before and during any reduction. These are some of the things I consider:

What we look at	Why it matters
Meal size, timing and eating pace	Large meals and eating within 2 to 3 hours of bed increase pressure on the valve (NHS Somerset)
Your personal food triggers	Caffeine, chocolate, fatty food and alcohol affect some people, so we find yours rather than cutting everything
Weight around the middle	Less pressure on the stomach means less reflux
Helicobacter pylori (H. pylori)	NHS guidance recommends testing for this stomach infection if symptoms persist when reducing a PPI (NHS Somerset)
Bloating and gut bacteria	Gas from small intestinal bacterial overgrowth (SIBO) can push stomach contents upward, and long-term acid suppression is one of its risk factors
Stress and the nervous system	Stress changes how the gut moves and how sensitive the food pipe is
Sleep position	Raising the head of the bed helps many people
Nutrient levels	After years on a PPI, it can be worth checking B12, magnesium and iron, which your GP can often test

Having the right rescue plan also makes a big difference. Alginates form a protective raft on top of the stomach contents. They’re made from seaweed, work in a different way from PPIs, and NHS guidance recommends them as rescue treatment when reducing and stopping a PPI (NHS North Staffordshire guidance). Some people also find soothing foods and herbal remedies helpful, but I always check these against your other medicines first.

The aim isn’t to swap one tablet for a handful of supplements. It’s to help your digestion work well on its own, so the improvement lasts. You can read more about how I investigate digestive symptoms in my gut health and IBS guide.

Thinking about coming off your PPI?

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Who should not stop taking a PPI?

Some people need a PPI long term, and stopping could be harmful. NHS guidance advises continuing if you have a history of any of the following (NHS Somerset):

Barrett’s oesophagus
severe oesophagitis
a bleeding stomach ulcer
ongoing reflux that isn’t controlled
a need for stomach protection because you take blood thinners, antiplatelets such as aspirin or clopidogrel, steroids, or an anti-inflammatory painkiller with an SSRI antidepressant

Please don’t stop or change prescribed medicine without speaking to your GP or prescriber. I’m very happy to work alongside your GP, supporting your gut while they guide any change to your medication.

When should you see a GP about reflux?

Please see your GP promptly if you’re having difficulty swallowing, are losing weight without trying, keep vomiting, or are over 55 with new or worsening symptoms. If you’re vomiting blood or have black stools, get urgent help from your GP or call 111. If you have chest pain that spreads to your arm, neck, jaw or back, or comes with breathlessness, sweating or sickness, call 999. It could be your heart, not reflux.

Common questions

Can I just stop taking omeprazole?

It’s best not to stop suddenly, especially if you’ve taken it for a long time or at a higher dose. Stopping abruptly can cause rebound acid symptoms, which can make you think you still need it. Speak to your GP about reducing gradually, with a rescue option such as an alginate.

How long does rebound acid last after stopping a PPI?

NHS guidance says symptoms usually settle within 2 to 4 weeks of stopping (NHS Cheshire and Merseyside). After many years on a PPI, it can take a little longer for the stomach to fully readjust.

Can I take omeprazole every other day instead of daily?

Taking a PPI on set days rather than every day is one recognised way to cut down. In the 2026 Belgian trial, a fixed intermittent schedule worked about as well as taking it only when needed or switching to an alginate (Medscape). Agree the schedule with your GP first.

What can I take instead of omeprazole?

NHS guidance lists antacids, alginates and H2 blockers as options for occasional symptoms when coming off a PPI (NHS Somerset). Alongside these, changes to meal timing, food triggers, weight, stress and sleep position can reduce reflux at its source.

Is it safe to take omeprazole long term?

For some people, such as those with Barrett’s oesophagus or a past bleeding ulcer, long-term use is necessary and the benefits outweigh the risks. For others, long-term use is linked with gut infections, fractures and low B12 and magnesium. NICE recommends the lowest effective dose and regular review (NICE).

If you’d like support coming off a PPI, or want to understand what’s driving your reflux, book a free discovery call. I see people in Edinburgh and online across the UK.