Acid reflux: when do you actually need medication?

I am the Prescriptsy editorial team, and acid reflux is one of the most common reasons patients come to see me, and also one of the most commonly over-treated.

Proton pump inhibitors (PPIs) are excellent drugs when used properly, and overused when handed out as a lifelong default.

The question is not really whether reflux exists, because for most adults it will happen at some point, but when medication adds value and when it gets in the way of better management.

This guide sets out, in plain clinical terms, how we at the GP end of the NHS think about reflux, when to self-manage, when to start a PPI, which PPI to pick, and when symptoms signal something that needs urgent referral.

What acid reflux actually is

Gastro-oesophageal reflux disease, GORD, is the persistent upward movement of stomach contents into the oesophagus.

The lower oesophageal sphincter is the valve that is meant to keep that one-way traffic working.

When it relaxes inappropriately, or when abdominal pressure outpaces its closing force, acid, pepsin and sometimes bile splash up and irritate the oesophageal lining.

Occasional reflux is normal. Reflux that happens more than twice a week, wakes you from sleep, or causes ongoing symptoms between episodes crosses the line into GORD and deserves a plan. The NHS page on heartburn and acid reflux lays out the lay description clearly.

Typical and atypical symptoms

The classic picture is burning chest pain rising from the stomach, worse after meals, worse lying flat, sometimes with a sour or bitter taste. That is straightforward. What I see miss more often are the atypical presentations:

• Chronic dry cough, particularly at night.
• Hoarseness in the morning.
• Recurrent sore throat without infection.
• Globus: a lump sensation in the throat.
• Dental enamel erosion, often spotted by a dentist first.
• Non-cardiac chest pain that has been cleared by cardiology.

Red flags that change the plan entirely

NICE guidance at nice.org.uk is firm on these. Any of the following in a patient over 55, or any age with persistent symptoms, warrants urgent endoscopy referral within two weeks:

• Difficulty swallowing (dysphagia).
• Unexplained weight loss.
• Persistent vomiting.
• Iron deficiency anaemia.
• Upper abdominal mass.
• Haematemesis or melaena.

These are not the routine "my chest burns after curry" picture. If you have any of them, this article is not a substitute for a same-week appointment.

Step one: lifestyle and trigger management

Before I write a prescription, I ask about the modifiable factors. Many patients get substantial relief from these alone.

Weight

Abdominal obesity is the single strongest modifiable risk factor. Even a five to ten per cent body weight reduction produces measurable improvement in reflux frequency and severity. I mention this first not to moralise but because the evidence is overwhelming.

Timing of meals

Eating within three hours of bedtime roughly doubles reflux events overnight. Finishing dinner by 7 pm, if bed is at 10 pm, is one of the cheapest and most effective interventions I can prescribe.

Portion size

Large meals distend the stomach, stretch the valve and promote reflux. Smaller, more frequent meals help many patients more than any medication change.

Triggers to experiment with

• Alcohol, especially wine and spirits.
• Coffee and strong tea.
• Chocolate, peppermint, fatty foods.
• Tomato-based sauces, citrus, spicy dishes.
• Carbonated drinks.

These do not affect everyone equally. Keep a one-week diary if it is not obvious.

Sleep position

A 15 to 20 cm bed head elevation outperforms a wedge pillow. Left lateral decubitus reduces reflux events compared to right lateral. It sounds fiddly but patients with nocturnal symptoms often find this transformative.

Smoking

Smoking lowers sphincter tone and reduces saliva production, both of which worsen reflux. Another reason to fold reflux treatment into a broader plan.

Step two: antacids and alginates for mild intermittent symptoms

For fewer than twice weekly symptoms without red flags, over-the-counter antacids such as Gaviscon are a reasonable first step. Alginates are particularly useful because they form a raft on top of the gastric contents and physically impede reflux rather than only neutralising acid. H2 blockers such as famotidine are a second over-the-counter tier for more persistent evening symptoms.

Step three: when to start a PPI

I move to a proton pump inhibitor if:

• Symptoms are at least twice weekly despite lifestyle change.
• There is evidence of oesophagitis on endoscopy.
• There are troublesome extra-oesophageal features: cough, hoarseness, poor dental enamel.
• The patient is on long-term NSAIDs or antiplatelets and needs gastric protection.

The standard initial course is a full dose PPI for eight weeks, then a planned step-down. Not a lifetime script.

Which PPI

Most PPIs are clinically equivalent at equivalent doses. The choice in NHS practice is largely driven by cost and local formulary. In broad terms:

• Omeprazole 20 mg once daily is the NHS default and the most evidence-rich PPI. First-line for most patients.
• Lansoprazole 30 mg once daily is equivalent efficacy and slightly faster onset in some trials.
• Pantoprazole 40 mg once daily has the least cytochrome P450 interaction profile, useful in patients on clopidogrel or complex polypharmacy.
• Esomeprazole 20 to 40 mg once daily, the S-isomer of omeprazole, offers marginal potency gains at a higher cost.
• Rabeprazole 20 mg once daily is useful where CYP2C19 polymorphisms impair omeprazole response.

How to take a PPI properly

This is where most failures originate. A PPI must be taken 30 to 60 minutes before a meal, usually breakfast, because it inactivates only actively secreting proton pumps. Taking it with food or at bedtime reduces efficacy significantly. The BNF at bnf.nice.org.uk sets out the dosing formally, and I find patients who are not improving are almost always taking the tablet at the wrong time.

Step four: review and step down

At eight weeks I review. If symptoms are well controlled, the plan is:

1. Halve the dose for two to four weeks.
2. Move to on-demand use where possible: take when symptomatic, stop when asymptomatic for several days.
3. Continue lifestyle measures throughout.

Some patients will need ongoing daily PPIs, particularly those with Barrett's oesophagus, severe erosive oesophagitis, or on long-term NSAIDs. That is clinically appropriate and safe when monitored. What I discourage is indefinite full-dose use in patients who were never reviewed.

PPIs: the long-term risks you have read about

Media coverage of PPI risks is mixed and often alarmist. The honest summary:

• Vitamin B12 and magnesium: mild reductions with long-term use. Check levels every one to two years on ongoing PPI.
• Osteoporosis: small increase in fracture risk on long-term high-dose therapy. Weight-bearing exercise, calcium and vitamin D intake matter.
• Clostridioides difficile: slightly elevated risk, relevant mostly during antibiotic courses.
• Rebound acid secretion: stopping a long course abruptly can worsen symptoms for two to three weeks. Taper rather than stop dead.
• Kidney: small signal for chronic kidney disease, still debated and probably reflects channelling bias.

None of these negate the benefit of a PPI in a patient with confirmed GORD. They do argue for not being on one at full dose forever without review.

When tests are indicated

Most patients do not need endoscopy. Indications for referral include red flags (as above), failure of an adequate PPI trial, and age over 55 with new persistent symptoms. A 24-hour pH study is reserved for diagnostic uncertainty or pre-surgical evaluation.

When surgery enters the picture

Fundoplication and newer endoscopic procedures are options for younger patients with troublesome confirmed reflux who either cannot tolerate long-term PPIs or prefer not to take them.

Patient selection matters more than any other factor. I refer where the diagnosis is secure, the patient is motivated and the PPI response has been confirmed.

Common patterns I see in clinic

The intermittent sufferer

Heartburn twice a month after rich meals or wine. Treated with on-demand antacid or alginate. No PPI needed.

The stressed professional

Nightly reflux, late dinners, coffee at 4 pm. Eighty per cent responds to lifestyle change plus a six-week omeprazole course. Relapse rate low once habits shift.

The NSAID patient

Older patient on naproxen for arthritis. Reflux plus gastritis risk. Co-prescribe a PPI for as long as the NSAID is needed.

The atypical presenter

Chronic cough referred from ENT. Empirical PPI trial for eight weeks, reviewed. Half improve substantially.

Further reading and next steps

For deeper context, see our clinic pages on acid reflux and heartburn and gastrointestinal health. The NICE guideline NG184 is the current gold standard and is worth reading alongside your GP consultation.

Final word

Reflux is manageable for the vast majority of patients.

The aim is not to medicate silence but to match the intervention to the severity, to review at eight weeks, and to step down when we can.

If red flags develop, move quickly. If your GP has prescribed a PPI but never reviewed you in twelve months, ask for a review. The drugs are good.

Overusing them is not.

the Prescriptsy editorial team

Reflux in pregnancy

Heartburn affects up to 80 per cent of pregnancies, peaking in the third trimester. Hormonal sphincter relaxation plus mechanical pressure from the uterus are the main drivers. Management ladder in pregnancy:

1. Lifestyle: small frequent meals, avoid eating within three hours of bed, head elevation.
2. Antacids and alginates (Gaviscon Advance) are safe throughout pregnancy and my first-line recommendation.
3. H2 blockers (famotidine) are a well-established second-line.
4. PPIs, particularly omeprazole, are used in more severe or persistent cases with broadly reassuring safety data.

Reflux in children

Physiological reflux is normal in infants and usually resolves by 12 to 18 months.

Red flags warrant review: poor weight gain, feed refusal, haematemesis, persistent cough, arching during feeds. I do not prescribe PPIs to healthy thriving infants who reflux milk.

Where GORD is genuinely symptomatic, a time-limited course under paediatric guidance is appropriate.

Barrett's oesophagus

Long-standing GORD can lead to metaplastic change in the lower oesophageal lining, termed Barrett's. This carries a small but real risk of progression to oesophageal adenocarcinoma.

Patients with endoscopically confirmed Barrett's enter a surveillance programme and usually remain on long-term PPI therapy, with bloods monitored periodically.

This is the clearest scenario in which ongoing PPI use is fully justified.

Reflux and asthma

Reflux and asthma commonly coexist. Reflux can worsen asthma control, and some asthma medications (theophylline, beta-agonists) relax the lower oesophageal sphincter and worsen reflux. In asthmatic patients with poorly controlled symptoms and heartburn, a trial of PPI often improves both. Our gastrointestinal health page links out to related overviews.

What I write on the prescription pad

A typical NHS prescription for a new GORD patient reads: omeprazole 20 mg once daily, 30 minutes before breakfast, for eight weeks, then review.

That formulation, in that timing, with that review date, is the minimum standard of care.

If your GP has written something different, there is usually a reason, but the review date is not optional.

One final myth

Milk is not a reflux cure. It provides brief buffering followed by rebound acid secretion driven by calcium. If you are reaching for milk every evening, you are probably a candidate for assessment and proper management.