Patient Leaflet Updated 12-Jun-2026 | Eisai Ltd
Pariet 10mg and 20mg Tablets
PARIETTM 10 mg and 20 mg gastro-resistant tablets
Rabeprazole sodium
1. What Pariet is and what it is used for
2. What you need to know before you take Pariet
3. How to take Pariet
4. Possible side effects
5. How to store Pariet
6. Contents of the pack and other information
Pariet tablets contain the active ingredient rabeprazole sodium. This belongs to a group of medicines called ‘Proton Pump Inhibitors’ (PPIs). They work by lowering the amount of acid that your stomach produces.
Pariet tablets are used to treat the following conditions:
Do not use Pariet if any of the above applies to you. If you are not sure, talk to your doctor or pharmacist before using Pariet.
Talk to your doctor or pharmacist before or during use of Pariet if:
If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before using Pariet.
Pariet should not be used in children.
If you experience severe (watery or bloody) diarrhoea with symptoms such as fever, abdominal pain or tenderness, stop taking Pariet and see a doctor straight away.
Taking a proton pump inhibitor like Pariet, 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).
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines. This includes medicines obtained without a prescription, including herbal medicines.
In particular, tell your doctor or pharmacist if you are taking any of the following medicines:
If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before using Pariet.
If you are pregnant , think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine. The doctor will help to decide if you should use Pariet during pregnancy.
You may feel sleepy while taking Pariet. If this happens, do not drive or use any tools or machines.
This medicine contains less than 1 mmol sodium (23 mg) per gastro-resistant tablet, that is to say essentially ‘sodium-free’.
Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.
Adults and older people
For ‘gastro-oesophageal reflux disease’ (GORD)
Treatment of moderate to severe symptoms (symptomatic GORD)
Treatment of more severe symptoms (erosive or ulcerative GORD)
Long-term treatment of symptoms (GORD maintenance)
For ulcers of the stomach (peptic ulcers)
For ulcers of the intestine (duodenal ulcers)
For ulcers caused by H. Pylori infection and to stop them coming back
For further information on the other medicines used for the H. Pylori treatment, see the individual product information leaflets.
Zollinger-Ellison Syndrome where excess acid is produced in the stomach
If you are on long-term treatment you will need to see your doctor at regular intervals for review of your tablets and symptoms.
Patients with liver problems. You should consult your doctor who will take special care when beginning treatment with Pariet and while you continue to be treated with Pariet.
If you take more Pariet than you should, talk to a doctor or go to a hospital straight away. Take the medicine pack with you.
Relief of symptoms will normally occur before the ulcer has completely healed. It is important that you do not stop taking the tablets until told to do so by your doctor.
If you have any 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.
The side effects are usually mild and improve without you having to stop taking this medicine.
These side effects are rare (affect less than 1 in 1,000 people).
These side effects are very rare (affect less than 1 in 10, 000 people).
Common (affect less than 1 in 10 people)
Uncommon (affect less than 1 in 100 people)
Rare (affect less than 1 in 1,000 people)
Other possible side effects (unknown frequency)
If you are on Pariet 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, 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.
Do not be concerned by this list of side effects. You may not get any of them.
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.
Keep out of the sight and reach of children.
Do not store this medicine above 25°C.
Do not refrigerate.
Do not use Pariet after the expiry date which is stated on the carton and blister foil. The expiry date refers to the last day of that month.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines that are no longer required. These measures will help to protect the environment.
Each Pariet 10 mg tablet contains 10 mg of the active substance rabeprazole sodium.
The other ingredients it contains:
Mannitol (E421), magnesium oxide, low-substituted hyprolose, hyprolose, magnesium stearate, ethylcellulose, hypromellose phthalate, diacetylated monoglycerides, talc, titanium dioxide (E171), red iron oxide (E172), Carnauba wax and ink (white shellac, black iron oxide (E172)), dehydrated ethyl alcohol, 1-butanol.
Each Pariet 20 mg tablet contains 20 mg of the active substance rabeprazole sodium.
The other ingredients it contains:
Mannitol (E421), magnesium oxide, low-substituted hyprolose, hyprolose, magnesium stearate, ethylcellulose, hypromellose phthalate, diacetylated monoglycerides, talc, titanium dioxide (E171), yellow iron oxide (E172), Carnauba wax and ink (white shellac, red iron oxide (E172)), glycerine fatty acid ester, dehydrated ethyl alcohol, 1-butanol.
Pariet 10 mg gastro-resistant tablet is a pink, film coated biconvex tablet with ‘E241’ printed on one side.
Pariet 20 mg gastro-resistant tablet is a yellow, film coated biconvex tablet with ‘E243’ printed on one side.
The tablets are packed in blister strips and come in pack sizes that contain: 1, 5, 7, 14, 15, 25, 28, 30, 50, 56, 75, 98, 112 or 120 tablets.
Not all pack sizes may be marketed.
This leaflet was last revised in March 2026.
LDN-Pariet-UK-MRP/0001/2026
EMEA Knowledge Centre, Mosquito Way, Hatfield, Hertfordshire, AL10 9SN
http://www.eisai.eu
+44(0)208 600 1400
+44 (0)208 600 1400