Omeprazole belongs to the proton pump inhibitor class of medication that is used to prevent the secretion of excessive gastric acid. Buy Omeprazole today from Click


7/17/2025 8:30:59 PM


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Omeprazole 20mg Capsules

Omeprazole is a medication that reduces stomach acid, relieving symptoms like heartburn. It's a type of medicine called a proton pump inhibitor.

Medication features:

  • A proton pump receptor
  • Suppresses prolonged gastric acid secretion
  • A generic drug

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Expected Delivery: Friday

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Omeprazole Prices

  • Medicine prices
  • Delivery Information
Medicine 28 Tablets 56 Tablets 28 Capsules 56 Capsules
Omeprazole 20 mg £17.99 £29.99
Omeprazole 40 mg £19.99 £34.99

Prices include free private prescription.

Delivery charges

Orders approved by our medical team before 3pm Monday – Friday are dispatched the same day via Royal mail. All orders are sent using a tracked and signed for service. Orders are not dispatched on weekends and bank holidays.

Royal Mail 1st Class | £3.95

Delivered within 1-3 working days. Excludes bank holidays. A tracked service with signature required on delivery.

Royal Mail Special Delivery Guaranteed before 1pm | £6.95

Delivered within 1 working day before 1pm. Excludes Sundays and bank holidays. A tracked service with signature required on delivery.

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  • Overview
  • Directions
  • Cautions

Buy Omeprazole Online UK

You can order Omeprazole online in the UK from our registered pharmacy. Complete the online medical assessment to be reviewed by one of our prescribers. If approved, your medication will be dispensed by our pharmacy team for next day delivery to your address. 

About Omeprazole

Omeprazole belongs to the family of drugs acting at the proton pump receptor and used to suppress prolonged gastric acid reflux. The medication istypically administered to sufferers of stomach ulcers, heartburn, gastroesophageal reflux disease (GERD).

Omeprazole Summary

Type of medicine

Acid Reflux Treatments


Treats acid reflux and heartburn

How it works

Reducing stomach acid, relieving heartburn symptoms

Active Ingredient


Directions of use

Oral tablets, taken once daily

Available strengths

20mg, 40mg

Side effects

Common side effects include  Constipation, diarrhea, abdominal pain, nausea, vomiting



The information provided in the summary table is for reference only. It is important to consult a qualified healthcare professional before starting any acid reflux treatments, including Omeprazole.

How effective is Omeprazole?

Omeprazole is an approved brand and generic drug that is used to treat a variety of digestive conditions caused by excessive production of gastric acid. The active ingredient, which also goes by the same name as that of the drug, omeprazole is highly effective in preventing the secretion of excess gastric acid. This allows the intestinal and stomach ulcers to heal as well as relieving heartburn discomfort when used as advised.

How does Omeprazole work?

The active ingredient omeprazole works by targeting proton pumps in your stomach, hence its classification under proton pump inhibitor class of drugs. These tiny pumps are responsible for the chemical reaction that produces stomach acid. Once omeprazole is ingested, it is absorbed in the bloodstream and signals the acid-forming cells on the stomach lining to reduce the amount of acid they produce. With the acidity reduced, the patient is relieved of acid reflux symptoms, and the intestinal ulcers start healing.

Name Jana Abelovska
Role Superintendent Pharmacist
GPhc Number 2220953

How should I take Omeprazole?

Omeprazole is taken orally in the form of tablets or capsules, as well as suspension, which is administered using a syringe. Usually, the medication is taken once a day, first thing in the morning. It does not upset the stomach, so that you can take it before or after a meal.

Note that pharmacists and doctors do not recommend taking the medication for immediate relief of acid reflux symptoms, particularly heartburn. Instead, it should be taken for 4 to 8 weeks, but some patients may end up taking for 14 weeks, depending on the severity of the symptoms. Also, it may take several days for this medication to alleviate stomach pains which is why it should be taken with antacids, as advised by the doctor. If you are taking sucralfate, take omeprazole half an hour before sucralfate. 

When taking omeprazole capsules/tablets, you should not chew or crush them in food since doing so prevents the activation of the medicinal properties of the drug. If unable to swallow the capsules, some brands of omeprazole capsules can be opened, and the contents mixed in a small amount of water that should be taken right away.  You should take to a pharmacist to know which type of capsules can be opened. 

If you forget to take the medication, take it as soon as you remember. However, if it is within 12 hours to your next dose, you can skip the missed dose. It would be best if you didn't take a double dose to make up for a forgotten dose.

How long should I take Omeprazole before I notice any difference?

It takes 2 to 4 days of consumption to realize the full effect, as such, it should not be taken to provide immediate relief. Instead, it is meant to treat acid reflux symptoms occurring a couple of times in a week. Usually, omeprazole is prescribed for 8 weeks when treating short-term gut conditions, but the period can be extended to 14 weeks if the patient's condition does not improve. 

If you are self-medicating, you should not take omeprazole for more than 2 weeks unless advised otherwise by a pharmacist or doctor.

Are there any side effects to consider

Similar to other PPIs, most patients well tolerate omeprazole. However, it causes some mild side effects on a few patients, which fade away with time. 

Some of these common side effects include:

  • Diarrhoea

  • Nausea

  • Headaches

  • Rash

  • Abdominal pain

In addition to these effects, younger patients, aged 1 to 17 years, complain about fever and breathing issues such as pharyngitis and sinus infections. 

Using omeprazole for an extended period, more than 1 year, can make it difficult for your body to absorb vitamin B-12. The deficiency manifests itself through feeling nauseated, numbness, poor muscle coordination and changes in menstruation cycle. Serious side effects that should warrant a visit to the doctor include bone fractures, severe diarrhoea, pale skin and swellings in the mouth. 

If you experience any of these severe side effects, be sure to consult us at Click Pharmacy for urgent assistance.

Cautions and warnings

You should not take this treatment if you are on any antifungal, blood thinning, and anti-epilepsy medications. Heart-related drugs, such as digoxin and some antibiotics, do not go well with omeprazole. These medications make it more likely to develop severe omeprazole side effects. Thus you should inform your doctor if you are on any medication before beginning omeprazole treatment. 

Nonetheless, the treatment is safe for pregnant and nursing mothers. But first, you are advised to try alternative treatment methods, such as eating smaller meals and less spicy foods, to ease acid reflux symptoms before you can start treatment.

Omeprazole Reviews

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Price £17.99

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Available strengths:

20 mg 40 mg


Price £17.99

Includes free private prescriptions

In stock

2024/07/17 2024/07/18

Order before 15:00pm (Monday to Friday) for next day delivery