Losec Capsules (Omeprazole) 10mg, 20mg, 40mg

From £15.99

  • Effective treatment for acid reflux, heartburn and stomach ulcers
  • Proton Pump Inhibitor medication
  • UK-based pharmacy & prescribers
  • Free online consultations
Fast & Free Delivery Options

Variety of delivery options including next day & free delivery.

100% UK-based Pharmacy

Pharmacy, clinic and prescribers based in Greater Manchester.

Free Online Consultations

Start your treatment with a quick and free online consultation.

Complete a free online assessment to buy your preferred treatment.
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Fast & Free Delivery Options

Variety of delivery options including next day & free delivery.

100% UK-based Pharmacy

Pharmacy, clinic and prescribers based in Greater Manchester.

Free Online Consultations

Start your treatment with a quick and free online consultation.

Buy Losec Online

Step 1: Online Consultation

Fill in a quick online consultation for our licensed pharmacists to review.

Step 2: Choose a Treatment

Our pharmacists will review your treatment to ensure it’s suitable.

Step 3: Quick & Discreet Delivery

Your treatment will be delivered to your door quickly & discretely.

Losec Capsules 20mg Information

Losec, also known as Omeprazole, is a Proton Pump Inhibitor medication. Losec reduces the amount of acid the stomach can produce, helping to treat issues such as acid reflux, gastroesophageal reflux disease (GERD) and stomach ulcers.

Medication NameLosec Capsules 20mg
Active IngredientOmeprazole
Medication formCapsule
Used to treatAcid reflux, gastroesophageal reflux disease (GERD), heartburn, indegestion and stomach ulcers
Available dosages20mg
Common side effects
Headache
Diarrhoea or stomach pain 
Nausea or vomiting 
Who is this medication suitable forMost adults
Do you need a prescription for it?Yes
How should it be used?Swallow the capsule whole with a glass of
water.
Patient Information Leaflethttps://www.medicines.org.uk/emc/files/pil.1509.pdft

What is Losec used for?

Losec works by calming your stomach and reducing irritation and discomfort caused by excess stomach acid. This helps relieve symptoms such as heartburn and indigestion, making it an effective treatment for those suffering from acid-related stomach issues.

How long do Losec Capsules take to work?

Generally, Losec begins to reduce symptoms like heartburn and acid reflux one to two days after starting them. Taking your Losec capsule around the same time each day helps maintain a steady level of medication in your body, which aids in effectively managing your symptoms.

Who can take Losec Capsules?

Losec is generally suitable for most adults. However, you should not take if you:

  • Are allergic to any of its ingredients
  • Are allergic to other medicines containing other proton pump inhibitors
  • Taking a medication containing nelfinavir (used for HIV infection)

How to take Losec Capsules

For effective treatment of acid reflux symptoms, Losec should be taken daily, preferably first thing in the morning and can be taken with or without food.

If you forget to take your dose, take it as soon as possible, but if it’s 12 hours or less until your next dose, miss that dose. Do not take 2 doses to make up for the one you’ve missed.

When you are prescribed Losec, your pharmacist or doctor will provide you with full instructions specific to your condition.

If you’re unsure how to take Losec, speak to one of our medical professionals or read the patient information leaflet.

How effective are Losec Capsules?

Losec capsules are highly effective for treating acid reflux, GERD, and stomach ulcers. They work by reducing stomach acid, which helps relieve symptoms like heartburn and allows ulcers to heal.

A clinical study on the effectiveness of Losec (Omeprazole) in Acid Peptic Disease concluded that Omeprazole therapy is an effective treatment for APD and shows good improvement in patients suffering from ulcers and reflux oesophagitis.

Side Effects of Losec Medication

Like any medication, you may experience some side effects when taking Losec Capsules. The side effects of taking Losec include:

Common side effects

  • Headache
  • Diarrhoea or stomach pain
  • Nausea or vomiting

Uncommon side effects

  • Swelling of the feet and ankles
  • Disturbed sleep
  • Dizziness

Rare side effects

  • Taste changes
  • Feeling agitated, confused or depressed
  • Eyesight problems
  • Sudden wheeziness or shortness of breath
  • Hair loss

For more information on the side effects of Losec, read the patient information leaflet.

Should you encounter any severe or unusual side effects, seek immediate medical attention.

Losec Capsule 20mg Ingredients

Active Ingredient: Omeprazole

Other Ingredients: disodium phosphate dihydrate, low-substituted hydroxypropyl cellulose, hypromellose, lactose anhydrous, magnesium stearate, mannitol, methacrylic acid, cellulose microcrystalline, macrogol, sodium lauryl sulfate, iron oxide E172, titanium dioxide E171, gelatine, silica colloidal anhydrous and paraffin liquid

Losec Capsule Warnings

  • Store the tablets at room temperature, away from moisture and heat.
  • Keep out of the SIGHT and REACH of children.
  • Do not use after the expiry date on the pack.

Losec Capsule 20mg FAQs


Although alcohol doesn’t change how Losec functions, it’s not advised to drink alcohol whilst taking Losec as it causes your stomach to produce more acid, which could worsen symptoms.

You can buy Losac capsules online through Click2Pharmacy’s Acid reflux clinic. We are a licensed online pharmacy, making it easy for you to get the medication you need. Just complete an online consultation for our pharmacists to review, and your prescription will be sent directly to your door.

If you’re pregnant, think you may be pregnant, planning on getting pregnant, or breastfeeding, please let one of our pharmacists know during your consultation. Although Losec is excreted in breast milk, it is unlikely to affect your child when the advised dose is taken.

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