Patient Leaflet Updated 05-Jun-2026 | Rosemont Pharmaceuticals Limited
Omeprazole 1 mg/ml Powder for Oral Suspension
Omeprazole 1 mg/ml Powder for Oral Suspension
Omeprazole
1. What Omeprazole Oral Suspension is and what it is used for
2. What you need to know before you take Omeprazole Oral Suspension
3. How to take Omeprazole Oral Suspension
4. Possible side effects
5. How to store Omeprazole Oral Suspension
6. Contents of the pack and other information
The name of your medicine is Omeprazole 1 mg/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 children:
Children 1-12 months of age:
Your doctor will tell you why you have been given this medicine.
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.
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 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:
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.
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.
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:
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.
You should take Omeprazole Oral Suspension without food on an empty stomach. See section 3 for details for infants and taking with milk.
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. Omeprazole can be used during pregnancy.
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.
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.
The recommended dose is given below.
Use in children and adolescents
To treat symptoms of GORD such as heartburn and acid regurgitation:
1-12 months of age (≤ 10 kg body weight): 1 mg/kg body weight once daily. Omeprazole 1 mg/ml oral suspension should be used for patients weighing ≥ 2 kg to ≤ 5 kg.*
*Individual dose measurements ≤ 2 ml are not indicated.
*Omeprazole 2 mg/ml oral suspension is available for patients weighing > 5 kg to ≤ 10 kg.
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 reconstituted in water. A red mixing disk will drop into the medicine to help mix the powders and also mix the reconstituted suspension after addition of the water. It should remain in the bottle. The red cap is replaced by a grey cap after reconstitution. It is recommended that a pharmacist or other health care professional reconstitutes Omeprazole Oral Suspension prior to its dispensing to the patient.
Combination of powder in cap and bottle
Reconstitution of the powder
Placement of syringe adaptor
Measuring your dose
Instructions for use of the syringe
1. Shake the bottle for 20 seconds immediately prior to each use
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. Take the syringe and put it into the adaptor opening (Figure 2).
4. Turn the bottle upside down (Figure 3).
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. Turn the bottle the right way up (Figure 5A).
7. Remove the syringe from the adaptor (Figure 5B).
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. Wash the syringe with water and let it dry before you use it again (Figure 6).
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 of this medicine than prescribed by your doctor, talk to your doctor or pharmacist straight away.
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.
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.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Other side effects include:
Common side effects (may affect up to 1 in 10 people)
Uncommon side effects (may affect up to 1 in 100 people)
Rare side effects (may affect up to 1 in 1,000 people)
Very rare side effects (may affect up to 1 in 10,000 people)
Not known (frequency cannot be estimated from the available data)
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 the Yellow Card Scheme at 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.
Before reconstitution: 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 reconstitution: 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 and a red Polypropylene (PP) mixing disk assembly containing powder, all enclosed in an aluminium foil pouch.
Each bottle contains 47 g of powder for oral suspension. Once reconstituted the bottle contains 90 ml of oral suspension, of which at least 75 ml is intended for dosing and administration.
Each pack also contains an opaque PP oral dosing syringe (5 ml, graduated at each 1 ml and intermediate marks every 0.1 ml) 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.
This leaflet was last revised in Mar 2026.
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