Omeprazole 4 mg/ml powder for oral suspension – patient leaflet, side effects, dosage

1.What Omeprazole Oral Suspension is and what it is used for

The name of your medicine is Omeprazole 4mg/ml Powder for oral suspension (called Omeprazole oral suspension in this leaflet).

Omeprazole oral suspension contains the active substance omeprazole. It belongs to a group of medicines called ‘proton pump inhibitors’.They work by reducing the amount of acid that your stomach produces.

Omeprazole is commonly used to treat the following conditions:

In adults:

• ‘Gastro-oesophageal reflux disease’ (GORD).This is where acid from the stomach escapes into the gullet (the tube which connects your throat to your stomach) causing pain, inflammation and heartburn.
• Ulcers in the upper part of the intestine (duodenal ulcer) or stomach (gastric ulcer).
• Ulcers which are infected with bacteria called ‘Helicobacter pylori’. If you have this condition, your doctor may also prescribe antibiotics to treat the infection and allow the ulcer to heal.
• Ulcers caused by medicines called NSAIDs (Non-Steroidal Anti-Inflammatory Drugs). Omeprazole can also be used to stop ulcers from forming if you are taking NSAIDs.

In children:

Children over 1 month of age:

• ‘Gastro-oesophageal reflux disease’ (GORD).This is where acid from the stomach escapes into the gullet (the tube which connects your throat to your stomach) causing pain, inflammation and heartburn.

  In children, the symptoms of the condition can include the return of stomach contents into the mouth (regurgitation), being sick (vomiting) and poor weight gain.

Children over 4 years of age and adolescents:

• Ulcers which are infected with bacteria called ‘Helicobacter pylori’. If your child has this condition, your doctor may also prescribe antibiotics to treat the infection and allow the ulcer to heal.

Your doctor will tell you why you have been given this medicine.

Do not take Omeprazole oral suspension

• If you are allergic to omeprazole or any of the other ingredients of this medicine (listed in section 6). ■ If you are allergic to medicines containing other proton pump inhibitors (eg pantoprazole, lansoprazole, rabeprazole, esomeprazole).
• If you are taking a medicine containing nelfinavir (used for HIV infection)

Do not take this medicine if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking Omeprazole oral suspension.

Warnings and precautions

Talk to your doctor or pharmacist before taking Omeprazole.

Serious skin reactions including Stevens-Johnson syndrome, toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS) and acute generalized exanthematous pustulosis (AGEP) have been reported in association with Omeprazole treatment. Stop using Omeprazole oral suspension and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.

Omeprazole may hide the symptoms of other diseases.Therefore, if any of the following happen to you before you start taking Omeprazole oral suspension or while you are taking it, talk to your doctor straight away:

• You lose a lot of weight for no reason and have problems swallowing.
• You get stomach pain or indigestion.
• You begin to vomit food or blood.
• You pass black stools (blood-stained faeces).
• You experience severe or persistent diarrhoea, as omeprazole has been associated with a small increase in infectious diarrhoea.
• You have severe liver problems.
• You have ever had a skin reaction after treatment with a medicine similar to omeprazole that reduces stomach acid ■ You are due to have a specific blood test (Chromogranin A)

If you take omeprazole on a long-term basis (longer than 1 year) your doctor will probably keep you under regular surveillance. You should report any new and exceptional symptoms and circumstances whenever you see your doctor. Taking a proton pump inhibitor like omeprazole, especially over a period of more than one year, may slightly increase your risk of fracture in the hip, wrist or spine.Tell your doctor if you have osteoporosis or if you are taking corticosteroids (which can increase the risk of osteoporosis).

If you get a rash on your skin, especially in areas exposed to the sun tell your doctor as soon as you can, as you may need to stop your treatment with omeprazole. Remember to also mention any other ill-effects like pain in your joints. When taking omeprazole, inflammation in your kidney may occur. Signs and symptoms may include decreased volume of urine or blood in your urine and/or hypersensitivity reactions such as fever, rash, and joint stiffness.You should report such signs to the treating physician.

Children

Some children with chronic illnesses may require long-term treatment although it is not recommended. Do not give this medicine to children under 1 month of age.

Other medicines and omeprazole oral suspension

Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines.This includes medicines that you buy without a prescription.This is because omeprazole can affect the way some medicines work and some medicines can have an effect on omeprazole.

Do not take omeprazole if you are taking a medicine containing nelfinavir (used to treat HIV infection). Tell your doctor or pharmacist if you are taking any of the following medicines:

• Ketoconazole, itraconazole, posaconazole or voriconazole (used to treat infections caused by a fungus) ■ Digoxin (used to treat heart problems)
• Diazepam (used to treat anxiety, relax muscles or in epilepsy)

• Phenytoin (used in epilepsy). If you are taking phenytoin, your doctor will need to monitor you when you start or stop taking

  Omeprazole

• Medicines that are used to thin your blood, such as warfarin or other vitamin K blockers.Your doctor may need to monitor you when you start or stop taking Omeprazole
• Rifampicin (used to treat tuberculosis)
• Atazanavir (used to treat HIV infection)
• Tacrolimus (in cases of organ transplantation)
• St John’s wort (Hypericum perforatum) (used to treat mild depression)
• Cilostazol (used to treat intermittent claudication)
• Saquinavir (used to treat HIV infection)
• Clopidogrel (used to prevent blood clots (thrombi))
• Erlotinib (used to treat cancer)
• Methotrexate (a chemotherapy medicine used in high doses to treat cancer) – if you are taking a high dose of methotrexate, your doctor may temporarily stop your omeprazole treatment.

If your doctor has prescribed the antibiotics amoxicillin and clarithromycin as well as Omeprazole to treat ulcers caused by Helicobacter pylori infection, it is very important that you tell your doctor about any other medicines you are taking. Omeprazole oral suspension with food and drink

You should take Omeprazole oral suspension without food on an empty stomach.

Pregnancy, breastfeeding and fertility

If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Omeprazole is excreted in breast milk but is not likely to influence the child when therapeutic doses are used.Your doctor will decide whether you can take omeprazole if you are breastfeeding.

Driving and using machines

Omeprazole is not likely to affect your ability to drive or use any tools or machines. Side effects such as dizziness and visual disturbances may occur (see section 4). If affected, you should not drive or operate machinery.

Omeprazole oral suspension contains maltitol, potassium, sodium, sodium methyl parahydroxybenzoate and sodium benzoate. ■ Maltitol. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

• Sodium.This medicine contains less than 1 mmol sodium (23 mg) per 10 mL, that is to say essentially ‘sodium free’. ■ Potassium.This medicine contains 1.90 mmol (or 74.2 mg) potassium per ml or 9.49 mmol (or 370.9 mg) potassium per 5ml dose.To be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet. ■ Sodium methyl parahydroxybenzoate. May cause allergic reactions (possibly delayed).

• Sodium benzoate.This medicine contains 25 mg sodium benzoate in each 5ml dose.

  1. 3. How to take Omeprazole oral suspension

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

Your doctor will tell you how much medicine to take and how long to take it for.This will depend on your condition and how old you are.

For doses of ≤ 15mg, the 2 mg/ml strength is recommended. For doses of 20mg or 40mg, the 4mg/ml strength is suitable. The recommended dose is given below.

Use in adults

To treat symptoms of GORD such as heartburn and acid regurgitation:

• If your doctor has found that your food pipe (gullet) has been slightly damaged, the recommended dose is 20 mg once a day for 4-8 weeks.Your doctor may tell you to take a dose of 40 mg for a further 8 weeks if your gullet has not yet healed. ■ The recommended dose once the gullet has healed is 10 mg once a day.
• If your gullet has not been damaged, the usual dose is 10 mg once a day.

To treat ulcers in the upper part of the intestine (duodenal ulcer):

• The recommended dose is 20 mg once a day for 2 weeks.Your doctor may tell you to take the same dose for a further 2 weeks if your ulcer has not yet healed.
• If the ulcers do not fully heal, the dose can be increased to 40 mg once a day for 4 weeks.

To treat ulcers in the stomach (gastric ulcer):

• The recommended dose is 20 mg once a day for 4 weeks.Your doctor may tell you to take the same dose for a further 4 weeks if your ulcer has not yet healed.
• If the ulcers do not fully heal, the dose can be increased to 40 mg once a day for 8 weeks.

To prevent the duodenal and stomach ulcers from coming back:

• The recommended dose is 10 mg or 20 mg once a day.Your doctor may increase the dose to 40 mg once a day. To treat duodenal and stomach ulcers caused by NSAIDs (Non-Steroidal Anti-Inflammatory Drugs): ■ The recommended dose is 20 mg once a day for 4–8 weeks.

To prevent duodenal and stomach ulcers if you are taking NSAIDs:

• The recommended dose is 20 mg once a day.

To treat ulcers caused by Helicobacter pylori infection and to stop them coming back:

• The recommended dose is 20 mg Omeprazole twice a day for one week.
• Your doctor will also tell you to take two antibiotics among amoxicillin, clarithromycin and metronidazole. Use in children and adolescents

To treat symptoms of GORD such as heartburn and acid regurgitation:

• Children over 1 month of age may take omeprazole.The dose for children is based on the child’s weight and the doctor will decide the correct dose based on the following*:

Age

1 month to 1 year of age

≥ 1 year of age

≥ 2 years of age

* The 2 mg/ml and 4 mg/ml strengths are equivalent with respect to buffering capacity (same amount of buffer on a ml basis). To treat ulcers caused by Helicobacter pylori infection and to stop them coming back:

• Children aged over 4 years may take omeprazole.The dose for children is based on the child’s weight and the doctor will decide the correct dose.
• Your doctor will also prescribe two antibiotics called amoxicillin and clarithromycin for your child. Taking this medicine
• This medicine contains 20mg (Omeprazole 4mg/ml oral suspension) in each 5 millilitre (5ml) of suspension. ■ Take this medicine by mouth.
• It is recommended that you take your dose of medicine in the morning.
• This medicine should be taken on an empty stomach, at least 30 minutes before a meal.
• Use the dosing device provided to measure the correct dose (see Measuring your dose).
• A glass of water may be taken after taking the dose.

• This medicine can also be administered via nasogastric (NG) or percutaneous endoscopic gastrostomy (PEG) tubes. ■ Instructions for use via NG or PEG tube:

  • Ensure that the enteral feeding tube is free from obstruction before administration. – Flush the enteral tube with 5mL of water

  • Administer the required dose of Omeprazole oral suspension with a suitable measuring device. – Flush the enteral tube with 5mL of water

    Continued overleaf W7DG7RBJA2_V1

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tubes of size 6 Fr to 16 Fr.

The container is a two compartment system containing powder both in the cap and in the bottle.The two powders first need to be combined and are then to be constituted in water. A red mixing disk will drop into the medicine to help mix the powders and also mix the constituted suspension after addition of the water. It should remain in the bottle.The red cap is replaced by a grey cap after constitution. It is recommended that a pharmacist constitutes Omeprazole oral suspension prior to its dispensing to the

• Shake the bottle for 10 seconds to loosen the powder.
• Twist the red cap anti-clockwise (see arrow on cap) until the seal is broken to release the powder in the red cap into the bottle.
• Twist the red cap back to the original position, securely fastening the red cap onto the bottle. Constitution of the powder
• Shake the bottle vigorously for ten seconds to mix the powders.
• Tap the base of the bottle three times on a hard horizontal surface to make sure all powder is in the bottle and not in the cap. ■ Remove the red cap from the bottle.
• Add 64ml of water by using a suitable measuring device up to the line on the label.
• Securely fasten the red cap onto the bottle and shake vigorously for 30 seconds.

Placement of syringe adaptor

• Remove the red cap and red ring and throw away.

• Insert the colourless, transparent Bottle Adaptor and replace the red cap with the grey

  plastic screw-cap.

• Leave for fifteen minutes for product to reach final consistency.

Measuring your dose

Instructions for use of the syringe

1. 1. Shake for 20 seconds immediately prior to each use.
2. 2.

   To open the bottle, press the grey cap down and turn it anti-clockwise

   (Figure 1). Do not remove the white cap portion.

3. 3. Take the syringe and put it into the adaptor opening (Figure 2).
4. 4. Turn the bottle upside down (Figure 3).
5. 5.

   Fill the syringe with a small amount of suspension by pulling the

   plunger down (Figure 4A).Then push the plunger upward in order

   to remove any possible bubbles (Figure 4B). Finally, pull the plunger

   down to the graduation mark corresponding to the quantity in

   millilitres (ml) prescribed by your doctor.The top flat edge of the

   piston should be in line with the graduation mark you are measuring

   to (Figure 4C).

6. 6. Turn the bottle the right way up (Figure 5A).
7. 7. Remove the syringe from the adaptor (Figure 5B).
8. 8.

   Put the end of the syringe into the mouth of the patient and push the plunger

   slowly back in to take the medicine.The suspension will be released slowly while

   the last portion will be released faster due to reduced resistance in the tip of the

   syringe.

9. 9. Wash the syringe with water and let it dry before you use it again (Figure 6).
10. 10.

    Close the bottle with the grey plastic screw cap - leave the bottle adaptor in the

    bottle.

Note: It is normal to have the red plastic disc in the suspension during use; do not

attempt to remove it.

If you take more Omeprazole oral suspension than you should

If you take more of this medicine than prescribed by your doctor, talk to your doctor or pharmacist straight away. If you forget to take Omeprazole oral suspension

If you forget to take a dose, take it as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose. Do not take a double dose to make up for a forgotten dose.

If you stop taking Omeprazole oral suspension

Do not stop taking Omeprazole without first talking to your doctor or pharmacist.

If you have further questions on the use of this medicine, ask your doctor or pharmacist.

1. 4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

If you notice any of the following rare but serious side effects, stop taking Omeprazole oral suspension and contact a doctor immediately:

• Sudden wheezing, swelling of your lips, tongue and throat or body, rash, fainting or difficulties in swallowing (severe allergic reaction).
• Reddening of the skin with blisters or peeling.There may also be severe blisters and bleeding in the lips, eyes, mouth, nose and genitals.This could be ‘Stevens-Johnson syndrome’ or ‘toxic epidermal necrolysis’.
• Widespread rash, high body temperature and enlarged lymph nodes (DRESS syndrome or drug hypersensitivity syndrome). ■ A red, scaly widespread rash with bumps under the skin and blisters accompanied by fever.The symptoms usually appear at the initiation of treatment (acute generalized exanthematous pustulosis).
• Yellow skin, dark urine and tiredness which can be symptoms of liver problems.

Other side effects include:

Common side effects (may affect up to 1 in 10 people)

• Headache.
• Effects on your stomach or gut: diarrhoea, stomach pain, constipation, wind (flatulence).
• Feeling sick (nausea) or being sick (vomiting).
• Benign polyps in the stomach.

Uncommon side effects (may affect up to 1 in 100 people)

• Swelling of the feet and ankles.
• Disturbed sleep (insomnia).
• Dizziness, tingling feelings such as “pins and needles”, feeling sleepy.
• Spinning feeling (vertigo).
• Changes in blood tests that check how the liver is working.
• Skin rash, lumpy rash (hives) and itchy skin.
• Generally feeling unwell and lacking energy.

Rare side effects (may affect up to 1 in 1,000 people)

• Blood problems such as a reduced number of white cells or platelets.This can cause weakness, bruising or make infections more likely.
• Allergic reactions, sometimes very severe, including swelling of the lips, tongue and throat, fever, wheezing. ■ Low levels of sodium in the blood.This may cause weakness, being sick (vomiting) and cramps. ■ Feeling agitated, confused or depressed.
• Taste changes.
• Eyesight problems such as blurred vision.
• Suddenly feeling wheezy or short of breath (bronchospasm).
• Dry mouth.
• An inflammation of the inside of the mouth.
• An infection called “thrush” which can affect the gut and is caused by a fungus.
• Liver problems, including jaundice which can cause yellow skin, dark urine, and tiredness.
• Hair loss (alopecia).
• Skin rash on exposure to sunshine.
• Joint pains (arthralgia) or muscle pains (myalgia).
• Severe kidney problems (interstitial nephritis).
• Increased sweating.

Very rare side effects (may affect up to 1 in 10,000 people)

• Changes in blood count including agranulocytosis (lack of white blood cells).
• Aggression.
• Seeing, feeling or hearing things that are not there (hallucinations).
• Severe liver problems leading to liver failure and inflammation of the brain.

• Sudden onset of a severe rash or blistering or peeling skin.This may be associated with a high fever and joint pains

  (Erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis).

• Muscle weakness.
• Enlarged breasts in men.

Not known (frequency cannot be estimated from the available data)

• Inflammation in the gut (leading to diarrhoea).

• If you are on Omeprazole for more than three months it is possible that the levels of magnesium in your blood may fall.

  Low levels of magnesium can be seen as fatigue, involuntary muscle contractions, disorientation, convulsions, dizziness or increased heart rate. If you get any of these symptoms, please tell your doctor promptly. Low levels of magnesium can also lead to a reduction in potassium or calcium levels in the blood.Your doctor may decide to perform regular blood tests to monitor your levels of magnesium.

• Rash, possibly with pain in the joints.

Omeprazole Oral Suspension may in very rare cases affect the white blood cells leading to immune deficiency. If you have an infection with symptoms such as fever with a severely reduced general condition or fever with symptoms of a local infection such as pain in the neck, throat or mouth or difficulties in urinating, you must consult your doctor as soon as possible so that a lack of white blood cells (agranulocytosis) can be ruled out by a blood test. It is important for you to give information about your medicine at this time.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist.This includes any possible side effects not listed in this leaflet.You can also report side effects directly via theYellow Card Scheme.Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store . By reporting side effects you can help provide more information on the safety of this medicine.

1. 5. How to store Omeprazole oral suspension
2. ■ Keep this medicine out of the sight and reach of children.
3. ■ Do not use this medicine after the expiry date, which is stated on the carton after EXP. The expiry date refers to the last day of that month.
4. ■ Dry Powders: Do not store above 25°C. Store in the original foil pouch in order to protect from light and moisture. ■ Following constitution: Store in a refrigerator (2°C - 8°C). Store in the original container in order to protect from light. Keep the bottle tightly closed.The constituted suspension has a shelf life of 28 days. After this time, any remaining suspension should be discarded. For up to 2 days the suspension may be stored below 25°C.
5. ■

   Do not use Omeprazole Oral Suspension if you notice anything wrong with the appearance of the medicine (See section 6).

   Tell your pharmacist.

6. ■ Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use.These measures will help to protect the environment.
7. 6. Contents of the pack and other information

What Omeprazole oral suspension contains

• The active substance is omeprazole. Each ml of oral suspension contains 4mg of omeprazole ■ The other ingredients are Potassium hydrogen carbonate (E501), Sodium alginate (E401), Maltitol (E965), Mannitol (E421),

  Sucralose (E955), Xanthan gum (E415), Natural Mint Flavouring containing Gum Arabic / Acacia Gum (E414),Titanium dioxide (E171), Sodium benzoate (E211), Sodium methyl parahydroxybenzoate (E219)

What Omeprazole oral suspension looks like and contents of the pack

Before constitution:White / off-white / slightly yellow powder in a cap attached to a bottle containing white / off-white / slightly yellow powder, which may contain dark specks due to sweetener.

After constitution:White / off-white / brownish oral suspension. May contain dark specks due to sweetener. Pack:

Amber plastic (PET) bottle with powder fitted with a red Polypropylene (PP) closure cap containing powder, all enclosed in an aluminium foil pouch.

Each bottle contains 47 g of powder for oral suspension. Once constituted the bottle contains 90 ml of oral suspension, of which 75 ml is intended for dosing and administration.

Each pack also contains an opaque PP oral dosing syringe (5 ml, graduated at each 1ml and intermediate marks every 0.1ml) with white HDPE plunger, colourless, transparent LDPE press-in bottle adaptor and grey PP replacement cap. Pack: 1 or 2 bottles.

Not all pack sizes may be marketed.

MarketingAuthorisation Holder

Xeolas Pharmaceuticals Limited,

Hamilton Building,

DCU, Glasnevin, Dublin 9,

IRELAND.

Manufacturer

Xeolas Pharmaceuticals Limited,

Unit 80a, GrangeWay,

Baldoyle Industrial Estate,

Dublin 13,

IRELAND

Manufacturer and Distributor :

Rosemont Pharmaceuticals Ltd

Rosemont House,Yorkdale Industrial Park,

Braithwaite Street,

Leeds, LS11 9XE,

UK

Other sources of information

This leaflet is also available in other formats for blind and partially-sighted patients.

For large print and Braille, please go to www..medicines.org.uk

This leaflet was last revised in February 2026

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Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

• Keep this leaflet.You may need to read it again.
• If you have any further questions, ask your doctor or pharmacist.
• This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness
• If you get any side effects talk to your doctor or pharmacist.This includes any possible side effects not listed in this leaflet.

What is in this leaflet:

The name of your medicine is Omeprazole 4mg/ml Powder for oral suspension (called Omeprazole oral suspension in this leaflet).

Omeprazole oral suspension contains the active substance omeprazole. It belongs to a group of medicines called ‘proton pump inhibitors’.They work by reducing the amount of acid that your stomach produces.

Omeprazole is commonly used to treat the following conditions:

In adults:

• ‘Gastro-oesophageal reflux disease’ (GORD).This is where acid from the stomach escapes into the gullet (the tube which connects your throat to your stomach) causing pain, inflammation and heartburn.
• Ulcers in the upper part of the intestine (duodenal ulcer) or stomach (gastric ulcer).
• Ulcers which are infected with bacteria called ‘Helicobacter pylori’. If you have this condition, your doctor may also prescribe antibiotics to treat the infection and allow the ulcer to heal.
• Ulcers caused by medicines called NSAIDs (Non-Steroidal Anti-Inflammatory Drugs). Omeprazole can also be used to stop ulcers from forming if you are taking NSAIDs.

In children:

Children over 1 month of age:

• ‘Gastro-oesophageal reflux disease’ (GORD).This is where acid from the stomach escapes into the gullet (the tube which connects your throat to your stomach) causing pain, inflammation and heartburn.

  In children, the symptoms of the condition can include the return of stomach contents into the mouth (regurgitation), being sick (vomiting) and poor weight gain.

Children over 4 years of age and adolescents:

• Ulcers which are infected with bacteria called ‘Helicobacter pylori’. If your child has this condition, your doctor may also prescribe antibiotics to treat the infection and allow the ulcer to heal.

Your doctor will tell you why you have been given this medicine.

2.What you need to know before you take Omeprazole oral suspension

Do not take Omeprazole oral suspension

• If you are allergic to omeprazole or any of the other ingredients of this medicine (listed in section 6). ■ If you are allergic to medicines containing other proton pump inhibitors (eg pantoprazole, lansoprazole, rabeprazole, esomeprazole).
• If you are taking a medicine containing nelfinavir (used for HIV infection)

Do not take this medicine if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking Omeprazole oral suspension.

Warnings and precautions

Talk to your doctor or pharmacist before taking Omeprazole.

Serious skin reactions including Stevens-Johnson syndrome, toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS) and acute generalized exanthematous pustulosis (AGEP) have been reported in association with Omeprazole treatment. Stop using Omeprazole oral suspension and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.

Omeprazole may hide the symptoms of other diseases.Therefore, if any of the following happen to you before you start taking Omeprazole oral suspension or while you are taking it, talk to your doctor straight away:

• You lose a lot of weight for no reason and have problems swallowing.
• You get stomach pain or indigestion.
• You begin to vomit food or blood.
• You pass black stools (blood-stained faeces).
• You experience severe or persistent diarrhoea, as omeprazole has been associated with a small increase in infectious diarrhoea.
• You have severe liver problems.
• You have ever had a skin reaction after treatment with a medicine similar to omeprazole that reduces stomach acid ■ You are due to have a specific blood test (Chromogranin A)

If you take omeprazole on a long-term basis (longer than 1 year) your doctor will probably keep you under regular surveillance. You should report any new and exceptional symptoms and circumstances whenever you see your doctor. Taking a proton pump inhibitor like omeprazole, especially over a period of more than one year, may slightly increase your risk of fracture in the hip, wrist or spine.Tell your doctor if you have osteoporosis or if you are taking corticosteroids (which can increase the risk of osteoporosis).

If you get a rash on your skin, especially in areas exposed to the sun tell your doctor as soon as you can, as you may need to stop your treatment with omeprazole. Remember to also mention any other ill-effects like pain in your joints. When taking omeprazole, inflammation in your kidney may occur. Signs and symptoms may include decreased volume of urine or blood in your urine and/or hypersensitivity reactions such as fever, rash, and joint stiffness.You should report such signs to the treating physician.

Children

Some children with chronic illnesses may require long-term treatment although it is not recommended. Do not give this medicine to children under 1 month of age.

Other medicines and omeprazole oral suspension

Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines.This includes medicines that you buy without a prescription.This is because omeprazole can affect the way some medicines work and some medicines can have an effect on omeprazole.

Do not take omeprazole if you are taking a medicine containing nelfinavir (used to treat HIV infection). Tell your doctor or pharmacist if you are taking any of the following medicines:

• Ketoconazole, itraconazole, posaconazole or voriconazole (used to treat infections caused by a fungus) ■ Digoxin (used to treat heart problems)
• Diazepam (used to treat anxiety, relax muscles or in epilepsy)

• Phenytoin (used in epilepsy). If you are taking phenytoin, your doctor will need to monitor you when you start or stop taking

  Omeprazole

• Medicines that are used to thin your blood, such as warfarin or other vitamin K blockers.Your doctor may need to monitor you when you start or stop taking Omeprazole
• Rifampicin (used to treat tuberculosis)
• Atazanavir (used to treat HIV infection)
• Tacrolimus (in cases of organ transplantation)
• St John’s wort (Hypericum perforatum) (used to treat mild depression)
• Cilostazol (used to treat intermittent claudication)
• Saquinavir (used to treat HIV infection)
• Clopidogrel (used to prevent blood clots (thrombi))
• Erlotinib (used to treat cancer)
• Methotrexate (a chemotherapy medicine used in high doses to treat cancer) – if you are taking a high dose of methotrexate, your doctor may temporarily stop your omeprazole treatment.

If your doctor has prescribed the antibiotics amoxicillin and clarithromycin as well as Omeprazole to treat ulcers caused by Helicobacter pylori infection, it is very important that you tell your doctor about any other medicines you are taking. Omeprazole oral suspension with food and drink

You should take Omeprazole oral suspension without food on an empty stomach.

Pregnancy, breastfeeding and fertility

If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Omeprazole is excreted in breast milk but is not likely to influence the child when therapeutic doses are used.Your doctor will decide whether you can take omeprazole if you are breastfeeding.

Driving and using machines

Omeprazole is not likely to affect your ability to drive or use any tools or machines. Side effects such as dizziness and visual disturbances may occur (see section 4). If affected, you should not drive or operate machinery.

Omeprazole oral suspension contains maltitol, potassium, sodium, sodium methyl parahydroxybenzoate and sodium benzoate. ■ Maltitol. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

• Sodium.This medicine contains less than 1 mmol sodium (23 mg) per 10 mL, that is to say essentially ‘sodium free’. ■ Potassium.This medicine contains 1.90 mmol (or 74.2 mg) potassium per ml or 9.49 mmol (or 370.9 mg) potassium per 5ml dose.To be taken into consideration by patients with reduced kidney function or patients on a controlled potassium diet. ■ Sodium methyl parahydroxybenzoate. May cause allergic reactions (possibly delayed).
• Sodium benzoate.This medicine contains 25 mg sodium benzoate in each 5ml dose.

3. How to take Omeprazole oral suspension

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

Your doctor will tell you how much medicine to take and how long to take it for.This will depend on your condition and how old you are.

For doses of ≤ 15mg, the 2 mg/ml strength is recommended. For doses of 20mg or 40mg, the 4mg/ml strength is suitable. The recommended dose is given below.

Use in adults

To treat symptoms of GORD such as heartburn and acid regurgitation:

• If your doctor has found that your food pipe (gullet) has been slightly damaged, the recommended dose is 20 mg once a day for 4-8 weeks.Your doctor may tell you to take a dose of 40 mg for a further 8 weeks if your gullet has not yet healed. ■ The recommended dose once the gullet has healed is 10 mg once a day.
• If your gullet has not been damaged, the usual dose is 10 mg once a day.

To treat ulcers in the upper part of the intestine (duodenal ulcer):

• The recommended dose is 20 mg once a day for 2 weeks.Your doctor may tell you to take the same dose for a further 2 weeks if your ulcer has not yet healed.
• If the ulcers do not fully heal, the dose can be increased to 40 mg once a day for 4 weeks.

To treat ulcers in the stomach (gastric ulcer):

• The recommended dose is 20 mg once a day for 4 weeks.Your doctor may tell you to take the same dose for a further 4 weeks if your ulcer has not yet healed.
• If the ulcers do not fully heal, the dose can be increased to 40 mg once a day for 8 weeks.

To prevent the duodenal and stomach ulcers from coming back:

• The recommended dose is 10 mg or 20 mg once a day.Your doctor may increase the dose to 40 mg once a day. To treat duodenal and stomach ulcers caused by NSAIDs (Non-Steroidal Anti-Inflammatory Drugs): ■ The recommended dose is 20 mg once a day for 4–8 weeks.

To prevent duodenal and stomach ulcers if you are taking NSAIDs:

• The recommended dose is 20 mg once a day.

To treat ulcers caused by Helicobacter pylori infection and to stop them coming back:

• The recommended dose is 20 mg Omeprazole twice a day for one week.
• Your doctor will also tell you to take two antibiotics among amoxicillin, clarithromycin and metronidazole. Use in children and adolescents

To treat symptoms of GORD such as heartburn and acid regurgitation:

• Children over 1 month of age may take omeprazole.The dose for children is based on the child’s weight and the doctor will decide the correct dose based on the following*:

Age

1 month to 1 year of age

≥ 1 year of age

≥ 2 years of age

* The 2 mg/ml and 4 mg/ml strengths are equivalent with respect to buffering capacity (same amount of buffer on a ml basis). To treat ulcers caused by Helicobacter pylori infection and to stop them coming back:

• Children aged over 4 years may take omeprazole.The dose for children is based on the child’s weight and the doctor will decide the correct dose.
• Your doctor will also prescribe two antibiotics called amoxicillin and clarithromycin for your child. Taking this medicine
• This medicine contains 20mg (Omeprazole 4mg/ml oral suspension) in each 5 millilitre (5ml) of suspension. ■ Take this medicine by mouth.
• It is recommended that you take your dose of medicine in the morning.

• This medicine should be taken on an empty stomach, at least 30 minutes before a meal.

• Use the dosing device provided to measure the correct dose (see Measuring your dose).
• A glass of water may be taken after taking the dose.

• This medicine can also be administered via nasogastric (NG) or percutaneous endoscopic gastrostomy (PEG) tubes.

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• Instructions for use via NG or PEG tube:

  • Ensure that the enteral feeding tube is free from obstruction before administration.
  • Flush the enteral tube with 5mL of water
  • Administer the required dose of Omeprazole oral suspension with a suitable measuring device. – Flush the enteral tube with 5mL of water

tubes of size 6 Fr to 16 Fr.

The container is a two compartment system containing powder both in the cap and in the bottle.The two powders first need to be combined and are then to be constituted in water. A red mixing disk will drop into the medicine to help mix the powders and also mix the constituted suspension after addition of the water. It should remain in the bottle.The red cap is replaced by a grey cap after constitution. It is recommended that a pharmacist constitutes Omeprazole oral suspension prior to its dispensing to the

• Shake the bottle for 10 seconds to loosen the powder.
• Twist the red cap anti-clockwise (see arrow on cap) until the seal is broken to release the powder in the red cap into the bottle. ■ Twist the red cap back to the original position, securely fastening the red cap onto the bottle. Constitution of the powder
• Shake the bottle vigorously for ten seconds to mix the powders.
• Tap the base of the bottle three times on a hard horizontal surface to make sure all powder is in the bottle and not in the cap. ■ Remove the red cap from the bottle.
• Add 64ml of water by using a suitable measuring device up to the line on the label.
• Securely fasten the red cap onto the bottle and shake vigorously for 30 seconds.

Placement of syringe adaptor

• Remove the red cap and red ring and throw away.

• Insert the colourless, transparent Bottle Adaptor and replace the red cap with the grey

  plastic screw-cap.

• Leave for fifteen minutes for product to reach final consistency.

Measuring your dose

Instructions for use of the syringe

1. 1. Shake for 20 seconds immediately prior to each use.
2. 2.

   To open the bottle, press the grey cap down and turn it anti-clockwise

   (Figure 1). Do not remove the white cap portion.

3. 3. Take the syringe and put it into the adaptor opening (Figure 2).
4. 4. Turn the bottle upside down (Figure 3).
5. 5.

   Fill the syringe with a small amount of suspension by pulling the

   plunger down (Figure 4A).Then push the plunger upward in order

   to remove any possible bubbles (Figure 4B). Finally, pull the plunger

   down to the graduation mark corresponding to the quantity in

   millilitres (ml) prescribed by your doctor.The top flat edge of the

   piston should be in line with the graduation mark you are measuring

   to (Figure 4C).

6. 6. Turn the bottle the right way up (Figure 5A).
7. 7. Remove the syringe from the adaptor (Figure 5B).
8. 8.

   Put the end of the syringe into the mouth of the patient and push the plunger

   slowly back in to take the medicine. The suspension will be released slowly while

   the last portion will be released faster due to reduced resistance in the tip of the

   syringe.

9. 9. Wash the syringe with water and let it dry before you use it again (Figure 6).
10. 10.

    Close the bottle with the grey plastic screw cap - leave the bottle adaptor in the

    bottle.

Note: It is normal to have the red plastic disc in the suspension during use; do not

attempt to remove it.

If you take more Omeprazole oral suspension than you should

If you take more of this medicine than prescribed by your doctor, talk to your doctor or pharmacist straight away. If you forget to take Omeprazole oral suspension

If you forget to take a dose, take it as soon as you remember it. However, if it is almost time for your next dose, skip the missed dose. Do not take a double dose to make up for a forgotten dose.

If you stop taking Omeprazole oral suspension

Do not stop taking Omeprazole without first talking to your doctor or pharmacist.

If you have further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

If you notice any of the following rare but serious side effects, stop taking Omeprazole oral suspension and contact a doctor immediately:

• Sudden wheezing, swelling of your lips, tongue and throat or body, rash, fainting or difficulties in swallowing (severe allergic reaction).
• Reddening of the skin with blisters or peeling.There may also be severe blisters and bleeding in the lips, eyes, mouth, nose and genitals.This could be ‘Stevens-Johnson syndrome’ or ‘toxic epidermal necrolysis’.
• Widespread rash, high body temperature and enlarged lymph nodes (DRESS syndrome or drug hypersensitivity syndrome). ■ A red, scaly widespread rash with bumps under the skin and blisters accompanied by fever.The symptoms usually appear at the initiation of treatment (acute generalized exanthematous pustulosis).
• Yellow skin, dark urine and tiredness which can be symptoms of liver problems.

Other side effects include:

Common side effects (may affect up to 1 in 10 people)

• Headache.
• Effects on your stomach or gut: diarrhoea, stomach pain, constipation, wind (flatulence).
• Feeling sick (nausea) or being sick (vomiting).
• Benign polyps in the stomach.

Uncommon side effects (may affect up to 1 in 100 people)

• Swelling of the feet and ankles.
• Disturbed sleep (insomnia).
• Dizziness, tingling feelings such as “pins and needles”, feeling sleepy.
• Spinning feeling (vertigo).
• Changes in blood tests that check how the liver is working.
• Skin rash, lumpy rash (hives) and itchy skin.
• Generally feeling unwell and lacking energy.

Rare side effects (may affect up to 1 in 1,000 people)

• Blood problems such as a reduced number of white cells or platelets.This can cause weakness, bruising or make infections more likely.
• Allergic reactions, sometimes very severe, including swelling of the lips, tongue and throat, fever, wheezing. ■ Low levels of sodium in the blood.This may cause weakness, being sick (vomiting) and cramps. ■ Feeling agitated, confused or depressed.
• Taste changes.
• Eyesight problems such as blurred vision.
• Suddenly feeling wheezy or short of breath (bronchospasm).
• Dry mouth.
• An inflammation of the inside of the mouth.
• An infection called “thrush” which can affect the gut and is caused by a fungus.
• Liver problems, including jaundice which can cause yellow skin, dark urine, and tiredness.
• Hair loss (alopecia).
• Skin rash on exposure to sunshine.
• Joint pains (arthralgia) or muscle pains (myalgia).
• Severe kidney problems (interstitial nephritis).
• Increased sweating.

Very rare side effects (may affect up to 1 in 10,000 people)

• Changes in blood count including agranulocytosis (lack of white blood cells).
• Aggression.
• Seeing, feeling or hearing things that are not there (hallucinations).
• Severe liver problems leading to liver failure and inflammation of the brain.

• Sudden onset of a severe rash or blistering or peeling skin.This may be associated with a high fever and joint pains

  (Erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis).

• Muscle weakness.
• Enlarged breasts in men.

Not known (frequency cannot be estimated from the available data)

• Inflammation in the gut (leading to diarrhoea).

• If you are on Omeprazole for more than three months it is possible that the levels of magnesium in your blood may fall.

  Low levels of magnesium can be seen as fatigue, involuntary muscle contractions, disorientation, convulsions, dizziness or increased heart rate. If you get any of these symptoms, please tell your doctor promptly. Low levels of magnesium can also lead to a reduction in potassium or calcium levels in the blood.Your doctor may decide to perform regular blood tests to monitor your levels of magnesium.

• Rash, possibly with pain in the joints.

Omeprazole Oral Suspension may in very rare cases affect the white blood cells leading to immune deficiency. If you have an infection with symptoms such as fever with a severely reduced general condition or fever with symptoms of a local infection such as pain in the neck, throat or mouth or difficulties in urinating, you must consult your doctor as soon as possible so that a lack of white blood cells (agranulocytosis) can be ruled out by a blood test. It is important for you to give information about your medicine at this time.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist.This includes any possible side effects not listed in this leaflet.You can also report side effects directly via theYellow Card Scheme.Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store . By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Omeprazole oral suspension

• Keep this medicine out of the sight and reach of children.
• Do not use this medicine after the expiry date, which is stated on the carton after EXP. The expiry date refers to the last day of that month.
• Dry Powders: Do not store above 25°C. Store in the original foil pouch in order to protect from light and moisture. ■ Following constitution: Store in a refrigerator (2°C - 8°C). Store in the original container in order to protect from light. Keep the bottle tightly closed.The constituted suspension has a shelf life of 28 days. After this time, any remaining suspension should be discarded. For up to 2 days the suspension may be stored below 25°C.

• Do not use Omeprazole Oral Suspension if you notice anything wrong with the appearance of the medicine (See section 6).

  Tell your pharmacist.

• Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use.These measures will help to protect the environment.

6. Contents of the pack and other information

What Omeprazole oral suspension contains

• The active substance is omeprazole. Each ml of oral suspension contains 4mg of omeprazole ■ The other ingredients are Potassium hydrogen carbonate (E501), Sodium alginate (E401), Maltitol (E965), Mannitol (E421),

  Sucralose (E955), Xanthan gum (E415), Natural Mint Flavouring containing Gum Arabic / Acacia Gum (E414),Titanium dioxide (E171), Sodium benzoate (E211), Sodium methyl parahydroxybenzoate (E219)

What Omeprazole oral suspension looks like and contents of the pack

Before constitution:White / off-white / slightly yellow powder in a cap attached to a bottle containing white / off-white / slightly yellow powder, which may contain dark specks due to sweetener.

After constitution:White / off-white / brownish oral suspension. May contain dark specks due to sweetener. Pack:

Amber plastic (PET) bottle with powder fitted with a red Polypropylene (PP) closure cap containing powder, all enclosed in an aluminium foil pouch.

Each bottle contains 47 g of powder for oral suspension. Once constituted the bottle contains 90 ml of oral suspension, of which 75 ml is intended for dosing and administration.

Each pack also contains an opaque PP oral dosing syringe (5 ml, graduated at each 1ml and intermediate marks every 0.1ml) with white HDPE plunger, colourless, transparent LDPE press-in bottle adaptor and grey PP replacement cap. Pack: 1 or 2 bottles.

Not all pack sizes may be marketed.

MarketingAuthorisation Holder

Xeolas Pharmaceuticals Limited,

Hamilton Building,

DCU, Glasnevin, Dublin 9,

IRELAND.

Manufacturer

Xeolas Pharmaceuticals Limited,

Unit 80a, GrangeWay,

Baldoyle Industrial Estate,

Dublin 13,

IRELAND

Manufacturer and Distributor :

Rosemont Pharmaceuticals Ltd

Rosemont House,Yorkdale Industrial Park,

Braithwaite Street,

Leeds, LS11 9XE,

UK

Other sources of information

This leaflet is also available in other formats for blind and partially-sighted patients.

For large print and Braille, please go to www..medicines.org.uk

This leaflet was last revised in February 2026

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