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Losec Capsules & Tablets (Omeprazole) 20mg

Losec Capsules & Tablets (Omeprazole) 20mg

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Buy Losec Capsules & Tablets (Omeprazole) 20mg Online In The UK

 

Losec 20mg is a long-standing acid suppression treatment from the group of drugs called proton pump inhibitors (PPIs). It prevents the acid-producing pumps in the stomach lining from working properly, allowing relief and prevention of symptoms caused by over-acidity. 

 

Losec is often recommended for adults suffering from: 

 

  • Acid reflux (GERD) 
  • Heartburn and indigestion 
  • Stomach ulcers and duodenal ulcers 
  • Erosive oesophagitis 
  • Zollinger–Ellison syndrome 
  • Reflux-related cough and throat irritation 
  • Prevention of ulcers caused by NSAIDs (e.g., ibuprofen, naproxen) 

 

Losec 20mg provides long-lasting relief for sufferers of frequent heartburn & acid reflux and associated symptoms such as burning chest pain, regurgitation, persistent coughing, nighttime reflux, sour taste in the mouth in the morning, or discomfort after meals. 

 

Its convenient capsule/tablet format makes it easy to take once daily, and clinical studies show it significantly improves quality of life for people with chronic acid issues. 

 

How Losec Works 

 

Losec contains omeprazole, which inhibits proton pumps in the parietal cells of your stomach. These pumps run the last step of acid formation. By turning them off, Losec cuts acid output, which is decreased greatly for at least 24 hours. 

 

This allows:

 

  • Damage from stomach acid heals faster 
  • Symptoms like burning and pain should settle 
  • Food to digest more comfortably 
  • Ulcers to repair without irritation 
  • Future flare-ups to reduce 

 

With this specific mode of action, Losec is still today one of the most potent first-line treatments against acid-related diseases globally. 

How To Use Losec Capsules & Tablets (Omeprazole) 20mg

Adults and children over 12 years (if prescribed):

  • Take one 20mg capsule or tablet once daily.
  • Swallow whole with a glass of water.
  • Do not chew, crush, or open the capsule, as this can reduce the effectiveness of the gastro-resistant coating.
  • Take the dose 30–60 minutes before food, preferably before breakfast.
  • For severe reflux or persistent symptoms, a doctor may increase the dose to 40mg once daily.
  • For long-term maintenance therapy, the dose may be reduced to 10–20mg daily.

Length of treatment:

  • Acid reflux/heartburn: 2–4 weeks
  • Stomach ulcers: 4–8 weeks
  • NSAID protection: as long as you are taking NSAIDs
  • Chronic conditions: long-term under medical supervision

If a dose is missed, take it as soon as you remember unless it's nearly time for the next dose.

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Side Effects Of Losec Capsules & Tablets (Omeprazole) 20mg

Losec is generally well tolerated, but like all medicines, it can cause side effects.

Common (affects up to 1 in 10 people):

  • Headache
  • Nausea
  • Diarrhoea or constipation
  • Stomach discomfort or bloating
  • Gas (flatulence)
  • Dizziness
  • Sleep disturbances

Uncommon (affects up to 1 in 100 people):

  • Rash or itching
  • Mood changes
  • Swelling of ankles or feet
  • Taste changes
  • Dry mouth

Rare but serious side effects:

  • Severe allergic reactions (swelling of the face, lips, or throat)
  • Persistent diarrhoea indicating a gut infection
  • Severe liver issues (yellowing of the skin or eyes)
  • Low magnesium levels causing muscle spasms or palpitations
  • Vitamin B12 deficiency (with long-term use)
  • Increased risk of fractures with high doses over many months

Seek urgent medical attention if serious side effects occur.

Frequently Asked Question


You may feel some relief within a few hours, but maximum acid reduction occurs after 2 to 3 days of consistent use.


Yes, but take antacids at least 2 hours apart from Losec. Antacids give quick relief, while Losec works long-term.


Yes. It reduces acid travelling up the oesophagus, improving symptoms like throat irritation and chronic cough.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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How fast does Losec 20mg start working?


You may feel some relief within a few hours, but maximum acid reduction occurs after 2 to 3 days of consistent use.

Can I take Losec with antacids?


Yes, but take antacids at least 2 hours apart from Losec. Antacids give quick relief, while Losec works long-term.

Can Losec help a sore throat caused by reflux?


Yes. It reduces acid travelling up the oesophagus, improving symptoms like throat irritation and chronic cough.

Comparison of Weight Loss Injectables

Features

Mounjaro®

Injectable Pen

Wegovy®

Injectable Pen

Saxenda®

Injectable Pen

Active Ingredient Tirzepatide Semaglutide Liraglutide
Mechanism of Action GLP-1 and GIP receptor agonist GLP-1 receptor agonist GLP-1 receptor agonist
Administration Weekly injection Weekly injection Daily injection
Dosage Varies by patient, typically starting low Varies, typically starting at 0.25 mg Varies, starting at 0.6 mg
Effect on Appetite Significantly reduces appetite and cravings Reduces appetite and increases satiety Reduces appetite and increases satiety
Average Weight Loss Up to 20% body weight reduction Up to 15% body weight reduction Significant weight reduction
Side Effects Nausea, vomiting, diarrhoea, constipation Nausea, vomiting, diarrhoea, constipation Nausea, diarrhoea, constipation, hypoglycemia
Approval FDA-approved for weight loss FDA-approved for weight loss FDA-approved for weight loss
Suitable For Adults with BMI ≥30 or ≥27 with comorbidities Adults with BMI ≥30 or ≥27 with comorbidities Adults with BMI ≥30 or ≥27 with comorbidities