Omeprazole

Price range: £14.99 through £31.99

Get support for recurring heartburn and acid reflux. Compare omeprazole 10 mg, 20 mg and 40 mg capsules in packs of 28 or 56. A prescriber will check which strength and course are suitable for you.

✓ Confidential online assessment from home
✓ Personal review by a UK prescriber
✓ Discreet delivery if treatment is prescribed

Omeprazole reduces stomach acid; it does not provide immediate relief. Packaging and branding may vary.

Quick Summary

Omeprazole

Type of medicine

Proton pump inhibitor (PPI) that reduces stomach acid

Active Ingredient

Omeprazole – a proton pump inhibitor

Relief takes time

Reduces acid production; not an immediate-relief treatment. Follow your prescribed course.

Not Suitable For

People with known allergies to omeprazole or other PPIs; consult a healthcare professional if you have severe liver problems or if symptoms persist.

Side effects

Common side effects may include headache, abdominal pain, nausea, vomiting, constipation or diarrhoea

Works by

Reducing the amount of acid your stomach makes.

Omeprazole capsules for acid reflux

When heartburn keeps coming back, knowing your next step matters. The Care Pharmacy offers an online assessment for acid reflux, with your symptoms, current medicines and previous treatment reviewed before a prescription is issued.

Compare strengths and pack sizes

This page offers 10 mg, 20 mg and 40 mg capsules in 28- and 56-capsule packs. Select a combination to see the pack price and price per capsule. The appropriate strength and quantity depend on your assessment; a higher strength is not automatically a better choice.

How omeprazole works

Omeprazole is a proton pump inhibitor (PPI). It reduces stomach acid to help manage heartburn and reflux. It works differently from an antacid and is not intended for immediate symptom relief. Follow the treatment plan agreed with your prescriber.

What happens after your assessment?

Tell us how often symptoms occur, what you have already tried and which medicines you take. A UK prescriber reviews your answers and may ask for more information. If treatment is suitable and prescribed, the pharmacy arranges discreet delivery. Our team can help with questions about your medicine.

When to get medical advice

Speak to a GP if you have difficulty swallowing, unexplained weight loss, frequent vomiting or symptoms that persist despite treatment. Do not use repeat purchases to delay an assessment of ongoing symptoms.

Explore our acid reflux service and treatment options, or read the NHS omeprazole guide. Always read the leaflet supplied with your medicine.

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Take the strength and dose prescribed for you. Omeprazole can be taken with or without food. Swallow capsules with water; do not crush or chew them. Ask a pharmacist if you have difficulty swallowing.

Follow the missed-dose advice in your leaflet. Never take two doses together to make up for a missed dose. Do not increase your dose or extend treatment without advice.

What ingredients are in Omeprazole?

Omeprazole contains the active ingredient omeprazole, a proton pump inhibitor (PPI) that reduces the amount of acid produced in the stomach.

In addition to the active ingredient, it may contain inactive components such as sucrose, maize starch, magnesium stearate, and capsule or tablet coating ingredients. These help protect the medicine and ensure effective delivery.

Always check the patient information leaflet supplied with your medication for a full and accurate list of ingredients, especially if you have allergies or sensitivities. If you are unsure, speak to your pharmacist before taking Omeprazole.

Warnings and precautions

Omeprazole may not be suitable for everyone. Speak to a healthcare professional before using it if you have liver problems, unexplained weight loss, difficulty swallowing, or persistent stomach pain. These symptoms may need further investigation before starting treatment.

Long-term use of Omeprazole may be associated with certain risks, such as vitamin B12 deficiency, low magnesium levels, or an increased risk of bone fractures. Always use the lowest effective dose for the shortest duration necessary.

If you are taking other medications, including those for HIV, blood thinning, or antifungal treatments, inform your doctor or pharmacist, as interactions may occur. If you are pregnant or breastfeeding, seek medical advice before use.

What are the side effects of Omeprazole?

Omeprazole may cause side effects, although many people use it without significant problems. Common side effects can include headache, abdominal pain, diarrhoea, constipation, or nausea. These effects are usually mild and may improve with continued use.

Less commonly, some people may experience dizziness, skin rash, or changes in taste. Rare but more serious side effects can include severe allergic reactions, liver problems, or persistent gastrointestinal symptoms.

If you experience severe or unusual symptoms, such as difficulty breathing, swelling of the face or throat, or ongoing stomach pain, seek medical advice promptly. Always use Omeprazole as directed and consult a healthcare professional if you have concerns.

How do I store Omeprazole?

Store Omeprazole at room temperature in a cool, dry place, away from direct heat and sunlight. Keep the medication in its original packaging to protect it from moisture and light.

Keep out of sight and reach of children and do not use after the expiry date printed on the packaging. If you have unused medication, speak to your pharmacist about safe disposal.

FAQs

Omeprazole: your questions answered

Find out what to expect, how to take your medicine and when to speak to a pharmacist or prescriber.

Request Treatment

Omeprazole starts reducing stomach acid within a few hours, but full symptom relief may take a few days.

It is generally prescribed for short-term use, but in some cases, long-term treatment is necessary under medical supervision.

Take the missed dose as soon as you remember. If it's almost time for your next dose, skip the missed one—do not take a double dose.

Omeprazole can interact with certain drugs, including blood thinners, antifungal treatments, and some antibiotics. Always check with your doctor before combining medications.

There are no strict dietary restrictions, but reducing acidic, spicy, and fatty foods can help manage acid reflux symptoms.

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