Pariet S
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Proton pump inhibitor (rabeprazole), reduces stomach acid
Film-coated tablets (enteric-coated)
Stomach pain, heartburn, and heavy stomach feeling (this product contains a proton pump inhibitor, which reduces stomach acid secretion).
Active Ingredients (per 1 tablet (daily dose))
Rabeprazole sodium 10 mg
Inactive Ingredients
Magnesium oxide, talc, hydroxypropyl cellulose, D-mannitol, ethyl cellulose, carnauba wax, carmellose calcium, glycerin fatty acid ester, titanium oxide, red ferric oxide, magnesium stearate, hypromellose phthalate
Instructions for Use
- âTake 1 tablet once a day with water or lukewarm water, at the same time each day.
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 1 tablet | Once daily |
| Under 15 years | Do not use | â |
- âFollow the recommended dosage strictly.
- âThis tablet dissolves in the intestine. Swallow it whole; do not chew or crush it.
- âIf your symptoms clear up, stop taking it.
- âTo remove a tablet from the sheet, press firmly on the raised part of the sheet with your fingertip to break the aluminum foil on the back, then take out the tablet. Do not swallow the sheet, as it may puncture the esophageal lining and cause serious injury.
- âDo not use this product if you:
- (1) Have ever had an allergic reaction to this product or any of its ingredients.
- (2) Are taking rilpivirine hydrochloride.
- âDo not take any other stomach and intestinal medicine while taking this product.
- âDo not take this product while breastfeeding. If you take it, avoid breastfeeding.
- âDo not take for more than 2 weeks in a row, counting any use of other proton pump inhibitors. (You may overlook a serious digestive disease, so see a doctor.)
- âSeek immediate medical attention if any of the following serious symptoms appear:
- âą Shock (anaphylaxis): Itching of skin, hives, hoarseness, sneezing, itchy throat, difficulty breathing, palpitations, or clouded consciousness immediately after use.
- âą Stevens-Johnson syndrome / toxic epidermal necrolysis: High fever, redness of eyes, eye discharge, sores on lips, sore throat, or widespread rash or redness on skin that persists or rapidly worsens.
- âą Liver disorder: Fever, itching, rash, jaundice (yellowing of the skin or whites of the eyes), dark urine, general fatigue, or loss of appetite.
- âą Kidney disorder: Fever, rash, decreased urine output, swelling throughout the body, general fatigue, joint pain, or diarrhea.
- âą Interstitial pneumonia: Shortness of breath with climbing stairs or slight exertion, dry cough, fever, or other symptoms that appear suddenly or persist.
- âą Rhabdomyolysis: Pain in the muscles of the limbs, shoulders, or lower back, numbness or weakness in the limbs, stiffness, general fatigue, or reddish-brown urine.
- âą Blood disorder: Sore throat, fever, general fatigue, dizziness, shortness of breath, pale face or inner eyelids, yellowing of the whites of the eyes or skin, dark urine, easy bleeding (bleeding gums, nosebleed), or bruising that does not fade when pressed.
- âą Hyponatremia (low blood sodium): Convulsions, decreased consciousness, headache, nausea, or vomiting.
- âą Visual disturbance: Difficulty seeing letters or shapes, or abnormal visual field.
- âą Confusion: Poor concentration, giving wrong answers when spoken to, or disorganized behavior.
- âą Hypomagnesemia (low blood magnesium): Nausea, vomiting, loss of appetite, general fatigue, twitching of the muscles of the face or limbs, feeling spaced out for a moment, decreased consciousness, stiff muscles in the hands and feet with convulsive shaking, numbness, dizziness, palpitations, or fainting.
- â Consult a doctor or pharmacist before use if you:
- (1) Are under medical treatment.
- (2) Are pregnant or possibly pregnant.
- (3) Are elderly.
- (4) Have ever had an allergic reaction to a medicine.
- (5) Have unexplained weight loss, or persistent stomach pain or abdominal pain.
- (6) Have been diagnosed with liver disease, or gastric or duodenal ulcer.
- âStop use immediately and consult a doctor or pharmacist â bringing this package insert with you â if any of the following appear after taking this product, as they may be side effects:
- Skin: Rash, redness, or itching
- Gastrointestinal: Constipation, diarrhea, abdominal bloating, nausea/vomiting, mouth sores, abdominal pain, bitter taste, heavy stomach feeling, dry mouth, loss of appetite, tongue inflammation, or difficulty swallowing, heartburn, vomiting, and white patches in the mouth (these suggest a possible Candida infection)
- Nervous system: Headache, dizziness, unsteadiness, drowsiness, weakness in the limbs, reduced sensation, reduced grip strength, slurred speech, disorientation (not knowing where you are, the time, or names), delirium (mild clouding of consciousness with misperceptions or hallucinations), or coma (complete loss of consciousness)
- Cardiovascular: Rise in blood pressure, or palpitations
- Other: Anemia, blurred or flickering vision, swelling, fatigue, fever, hair loss, tingling or numbness, joint pain, muscle pain, or gynecomastia (breast enlargement in men)
- âStop use and consult a doctor or pharmacist â bringing this package insert with you â if symptoms do not improve after 3 days.
- âStore in a cool, dry place away from direct sunlight. Keep out of reach of children. Do not transfer to another container (this can cause mistaken use or affect quality). The inner foil pouch contains a desiccant. Do not swallow it. Do not use after the expiry date. Even within the expiry date, use within 6 months of opening the inner foil pouch. Write the date you opened it in the "opening date" box on the opening flap of the carton.
Additional Information
Contains rabeprazole sodium in the same amount as the prescription medicine (printed on the box).
The maker's pre-purchase check sheet (not the package insert) says that if you are under a doctor's treatment, including taking digoxin, methyldigoxin, itraconazole, gefitinib, or methotrexate, you may not be able to take this product. Consult a doctor or pharmacist.
Sources & Documents
- Japanese product page
- Japanese PDF
- English PDF
- Suitability Checklist
- Last verified: October 13, 2026
Related Medicines
For informational purposes only. Always consult a doctor or pharmacist before taking any medication.