Buy Lansoprazole

How to get lansoprazole online

  1. Complete a short online consultation about your symptoms, health and any other medicines.
  2. A UK prescriber reviews your answers and decides whether lansoprazole is suitable, and at which dose.
  3. If approved, our pharmacy dispatches your treatment in discreet packaging.

Lansoprazole Prices

Name & Dosage x7 Capsules x7 Tablets x14 Capsules x14 Tablets x28 Capsules x28 Tablets
Lansoprazole 15mg Capsules £6.99 £9.99 £16.49
Lansoprazole 15mg Orodispersible Tablets £8.49 £11.99 £19.99
Lansoprazole 30mg Capsules £11.49 £16.99
Lansoprazole 30mg Orodispersible Tablets £13.99 £23.99

Key Points

  • Lansoprazole reduces the amount of acid the stomach makes.
  • It treats heartburn, acid reflux, GORD and stomach ulcers.
  • Take it once a day in the morning, at least 30 minutes before food.
  • It comes as capsules or as orodispersible tablets that dissolve on the tongue.

What is Lansoprazole Used For?

Lansoprazole is used to treat heartburn and acid reflux, gastro-oesophageal reflux disease (GORD), an inflamed food pipe (reflux oesophagitis) and stomach or duodenal ulcers. It is also used with antibiotics to clear Helicobacter pylori infection, and to protect the stomach in people at risk of ulcers from anti-inflammatory painkillers.

What does lansoprazole do and how does it work?

Lansoprazole blocks the proton pumps in the stomach lining that produce acid. With less acid, there is less to flow back up into the food pipe (oesophagus), which eases heartburn and gives any damage time to heal.

How long does lansoprazole take to work?

Symptoms usually start to improve within 2 to 3 days, but the full effect can take up to 4 weeks. If your symptoms have not improved after 4 weeks, speak to our prescriber or your GP, as you may need tests or a different treatment.

Can I buy lansoprazole over the counter?

No. Lansoprazole is a prescription-only medicine in the UK, so it cannot be bought over the counter at Boots or any other pharmacy without a prescription. Some other PPIs, such as esomeprazole 20mg, are available from pharmacies and shops for up to 2 weeks of heartburn relief in adults. With us, you can get lansoprazole after an online consultation reviewed by a UK prescriber.

What is the difference between lansoprazole capsules and orodispersible tablets?

They contain the same medicine and work in the same way. Capsules are swallowed whole with water. Orodispersible tablets are placed on the tongue and sucked gently until they break up, then the tiny granules are swallowed with saliva, which can help if you find capsules hard to swallow. The orodispersible tablets contain aspartame, so they are not suitable for people with phenylketonuria (PKU).

Can I take lansoprazole long term?

Some people need lansoprazole for months or years, but long-term use should be reviewed regularly by a doctor. Taking it for more than 3 months can lower magnesium levels, and taking it for more than a year may raise the risk of bone fractures, gut infections and low vitamin B12. Lansoprazole can also hide the symptoms of stomach cancer, so tell your doctor about any new or changing symptoms. Check with your doctor before stopping after long-term use.

Are there any warnings about lansoprazole?

Yes. Lansoprazole is widely used, but the NHS and the product information highlight some important points. It can hide the symptoms of stomach cancer, so new or changing symptoms should be checked by a doctor. Long-term use can lower magnesium (after 3 months) and may raise the risk of bone fractures, gut infections and low vitamin B12 (after a year), so it should be reviewed regularly. Stop taking it and get medical help if you have signs of a serious allergic or skin reaction, and tell a doctor about a rash on sun-exposed skin with joint pain, severe or long-lasting diarrhoea, yellow skin or eyes, dark pee, or stomach pain that is getting worse.

Does lansoprazole cause weight gain?

Weight gain is not listed as a side effect of lansoprazole. Swelling from fluid retention (oedema) is an uncommon side effect: speak to our prescriber or your GP if you notice swollen ankles or sudden weight gain.

Is lansoprazole the same as omeprazole?

No, they are different medicines, but they are closely related. Lansoprazole, omeprazole, esomeprazole and pantoprazole all work in the same way and generally work similarly well, with similar side effects, although the doses differ. If one PPI does not suit you, your doctor may suggest another.

Medicine Standard dose for reflux
Lansoprazole 30mg once a day
Omeprazole 20mg once a day
Esomeprazole 20mg once a day
Pantoprazole 40mg once a day

What else can help with acid reflux?

  • Eat smaller meals, and avoid eating in the 3 to 4 hours before bed.
  • Cut down on foods and drinks that trigger your symptoms, such as rich, spicy or fatty food, caffeine and alcohol.
  • Raise the head of your bed by about 10 to 20cm, so your head and chest are above your waist (extra pillows can make reflux worse).
  • Avoid tight clothing around your waist.
  • Stop smoking, and lose weight if you are overweight.

Lansoprazole Dosage Instructions

Take lansoprazole once a day in the morning, at least 30 minutes before food. Your prescriber will tell you which strength to take and for how long.

  1. Capsules: swallow whole with a drink of water. If you find capsules hard to swallow, you can open the capsule and mix the granules with a little water, juice or soft food such as yoghurt, then take it straight away. Do not crush or chew the capsule or the granules.
  2. Orodispersible tablets: place the tablet on your tongue and suck it gently until it breaks up, then swallow the granules with your saliva. You can also swallow the tablet whole with a drink of water. Do not crush or chew it.
  3. Usual doses: 15mg or 30mg a day for heartburn and reflux; 30mg a day for 4 to 8 weeks to heal an inflamed food pipe or a stomach ulcer; 15mg a day to stop reflux coming back.
  4. If you also take an antacid, take it at least 2 hours before or after your lansoprazole dose.
  5. If you miss a dose, take it as soon as you remember, unless your next dose is due in less than 12 hours. Never take two doses to make up for a missed one.

Older people should not usually take more than 30mg a day, and people with moderate or severe liver problems usually need half the usual dose. Our prescriber will take this into account.

 

When should you see a doctor instead?

Heartburn medicine can hide the signs of a more serious problem. Do not start lansoprazole online if you have any of the symptoms below: see a GP promptly instead. If you are vomiting blood (it may look like coffee grounds) or have black, tarry poo, get help straight away: call 111, or 999 if you feel very unwell.

  • Difficulty or pain when swallowing, or food getting stuck
  • Repeated vomiting, or vomiting blood
  • Black, tarry or bloody poo
  • Weight loss you cannot explain
  • New or changed indigestion symptoms and you are over 55
  • Feeling full very quickly, or a swollen stomach
  • Feeling weak, tired or looking paler than usual
  • Heartburn that has needed treatment continuously for 4 weeks or more and has not been checked by a doctor

 

Lansoprazole Side Effects

Like all medicines, lansoprazole can cause side effects, although not everybody gets them. The most common are headache and stomach upsets.

Stop taking lansoprazole and get urgent medical help if you have

  • Signs of a serious allergic reaction, such as swelling of the face, lips, tongue or throat, or difficulty breathing (call 999)
  • A severe skin reaction with blistering, peeling or sores, sometimes with a fever
  • Yellowing of the skin or eyes, or dark urine, which can be signs of liver problems

Also call a doctor or 111 straight away if you get a rash on skin exposed to the sun, especially with joint pain, or severe or long-lasting diarrhoea.

Common (up to 1 in 10 people)

Headache, dizziness, diarrhoea, constipation, stomach pain, feeling or being sick, wind, dry or sore mouth or throat, itchy skin, rash or hives, tiredness, changes in liver blood tests, and small harmless growths in the stomach lining (fundic gland polyps).

Uncommon (up to 1 in 100 people)

Low mood (depression), joint or muscle pain, swelling from fluid retention, changes in blood cell counts, and broken hip, wrist or spine (with high doses or long-term use).

Lansoprazole can occasionally cause dizziness, a spinning feeling, sleepiness or blurred vision. Do not drive or use machinery if this happens. You can report side effects through the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk).

Lansoprazole Warnings

Who should not take lansoprazole?

Lansoprazole is not suitable for everyone. Our prescriber checks your answers against these points before deciding whether to prescribe it.

Do not take lansoprazole if you

  • Are allergic to lansoprazole or any of the ingredients
  • Take atazanavir, a medicine for HIV
  • Take rilpivirine tablets, or a combination HIV tablet that contains rilpivirine

Tell our prescriber first if you

  • Have liver problems
  • Have osteoporosis, or have been told your magnesium or vitamin B12 is low
  • Have ever had a skin reaction after taking a PPI such as omeprazole
  • Have phenylketonuria (the orodispersible tablets contain aspartame) or an intolerance to some sugars (some lansoprazole capsules and tablets contain sucrose or lactose)
  • Are due to have an endoscopy, or a chromogranin A blood test
  • Are pregnant, trying for a baby or breastfeeding
  • Take any other medicines, especially those listed under Interactions

Lansoprazole Interactions

What should you not take with lansoprazole?

Lansoprazole can affect how some other medicines work, and some medicines affect lansoprazole. Always list everything you take in your consultation, including herbal remedies.

Medicine What it means
Atazanavir Must not be taken with lansoprazole
Rilpivirine tablets (including combination HIV tablets that contain it) Must not be taken with lansoprazole
Nelfinavir Not recommended with lansoprazole, as it may not work properly
Ketoconazole, itraconazole, posaconazole Lansoprazole can stop these being absorbed properly, so taking them together should be avoided
Digoxin, warfarin, tacrolimus, theophylline, high-dose methotrexate Lansoprazole can change the levels of these medicines, so extra monitoring or a dose change may be needed
Fluvoxamine Raises lansoprazole levels. A lower lansoprazole dose may be needed
Rifampicin, St John’s wort Can lower lansoprazole levels and make it less effective
Antacids, sucralfate Can reduce how much lansoprazole is absorbed. Leave at least 2 hours between them and lansoprazole

Can I take Gaviscon with lansoprazole?

Yes. An antacid or alginate such as Gaviscon can be used for quick relief while lansoprazole starts to work, but leave a gap between them: take lansoprazole first thing, at least 30 minutes before food, and leave at least 2 hours either side before taking Gaviscon, for example after lunch or at bedtime. If you still need an antacid regularly after 4 weeks, speak to our prescriber.

Lansoprazole Pregnancy and breastfeeding

Lansoprazole can be taken in pregnancy, but you will usually be offered omeprazole instead, because there is much more information about its safety in pregnancy. If you become pregnant while taking lansoprazole, speak to your doctor, but do not stop a prescribed medicine without advice.

Lansoprazole can often be used while breastfeeding, but it may pass into breast milk in small amounts, so a doctor will usually recommend omeprazole or pantoprazole instead. Tell our prescriber if you are breastfeeding.

Patient Information Leaflet

Read the leaflet before you start treatment. The leaflet in your pack is the version for the product you receive.

Frequently Asked Questions

It works best taken at least 30 minutes before food, usually first thing in the morning, because food reduces how much of the medicine your body absorbs.

If you take one dose a day, take it in the morning. If your prescriber has advised two doses a day, take one in the morning and one in the evening, each at least 30 minutes before food.

Only if a doctor has prescribed it. For reflux, lansoprazole is taken once a day. Twice-daily doses are used for specific conditions, for example 30mg twice a day for one week with antibiotics to clear a Helicobacter pylori infection. If you take it twice a day, take one dose in the morning and one in the evening, each at least 30 minutes before food. Lansoprazole’s side effects are the same as for once-daily use, although the antibiotics taken with it for H. pylori can cause extra side effects such as diarrhoea, but higher doses taken for a long time are more likely to affect your bones.

For reflux and heartburn, the usual maximum is 30mg a day, and older people should not usually take more than this. Higher doses are used for some conditions, for example 30mg twice a day for one week with antibiotics to treat a Helicobacter pylori infection, and much higher doses under specialist care for rare conditions such as Zollinger-Ellison syndrome. People with moderate or severe liver problems usually need a lower dose. Never take extra doses on your own.

No. Lansoprazole is a proton pump inhibitor (PPI). Antacids such as Gaviscon neutralise acid that is already in your stomach and work within minutes, while lansoprazole reduces how much acid your stomach makes, which starts to work within 2 to 3 days but can take up to 4 weeks to work fully. If you take an antacid as well, take it at least 2 hours before or after your lansoprazole.

It can. Constipation, wind and stomach pain are common side effects, affecting up to 1 in 10 people. Drinking plenty of water and eating more fibre can help with constipation. Speak to our pharmacist if these side effects last or trouble you.

Lansoprazole itself leaves your blood within a few hours, but its effect on stomach acid lasts much longer, because it switches off the acid pumps until your stomach makes new ones. This is why one dose a day is usually enough.

After a short course, most people can simply stop. After long-term use, your stomach may make more acid than usual for a while (rebound), so symptoms can come back or feel worse. Speak to your doctor before stopping after long-term use, as they may suggest reducing the dose gradually.

Lansoprazole is a widely used medicine, but like all medicines it can cause side effects and is not suitable for everyone. It is best taken at the lowest dose that works, for the shortest time needed. Our prescriber checks your health and other medicines before prescribing it, and long-term use should be reviewed regularly by a doctor.

Yes, but it is best to limit alcohol. It does not stop lansoprazole working, but it increases stomach acid and can make reflux symptoms worse.

No, lansoprazole does not affect combined or progestogen-only pills. It may make the emergency contraceptive ellaOne less effective, so tell the pharmacist if you need emergency contraception.

None is clearly better for everyone. They work in the same way and generally work similarly well at standard doses. The best choice depends on your condition, how you respond and any other medicines you take, so our prescriber will recommend the most suitable one.

Written and clinically reviewed by our pharmacists

Abbas Kanani, MRPharmS
Written by

Abbas Kanani,
MRPharmS

View profile →
✓ Founder & Superintendent Pharmacist
✓ GPhC no. 2082291
✓ 13+ years experience
Clinically reviewed by

Hadi Habboushi,
MPharm

View profile →
✓ Independent Prescriber
✓ GPhC no. 2229049
✓ 5+ years experience
How we ensure accuracy →
First created 17th April 2025
Last clinically reviewed 22nd October 2026
Next review 22nd October 2027

Lansoprazole Reviews

Product rated 5/5

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"Laura's Review"

Work as it should

By Laura Wilkinson
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"Pb's Review"

Did the job perfectly

By PB
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"Alexander's Review"

Does what it is supposed to do, as always.

By Alexander
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"Yvie's Review"

Very good product. Always works well for me.

By Yvie

Customer reviews reflect individual experiences and are not medical advice.

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