Active Ingredient
Omeprazole 20mg per capsule
What Risek 20mg Is Used For
Risek 20mg capsules contain omeprazole, a Proton Pump Inhibitor (PPI) that reduces the amount of acid produced in the stomach. This medication is prescribed for adults and adolescents over 12 years of age for the treatment of:
- Gastro-Esophageal Reflux Disease (GERD), a chronic condition where stomach acid frequently flows back into the esophagus causing irritation and discomfort
- Erosive esophagitis, where stomach acid has caused damage and inflammation to the lining of the esophagus
- Gastric and duodenal ulcers, including ulcers caused by Helicobacter pylori (H. pylori) infection when used as part of combination eradication therapy
- Zollinger-Ellison syndrome, a rare condition in which the stomach produces excessive amounts of acid
- Prevention of gastric ulcers in patients taking long-term non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or aspirin
- Heartburn and acid regurgitation associated with GERD
Omeprazole works by irreversibly blocking the hydrogen-potassium adenosine triphosphatase enzyme system, commonly referred to as the proton pump, in the stomach's acid-producing cells. By blocking this pump, omeprazole significantly reduces acid secretion regardless of the stimulus causing acid production. Clinical studies demonstrate that omeprazole begins reducing stomach acid within one hour of the first dose, with maximum effect typically achieved after 4 days of continuous use.
Important Safety Information
Who Should NOT Take Risek 20mg
Do not use this medication if you are allergic to omeprazole, other proton pump inhibitors such as lansoprazole, pantoprazole, rabeprazole, or esomeprazole, or any other ingredients in this product, are taking rilpivirine-containing medications used to treat HIV infection, or are taking nelfinavir used to treat HIV infection, as omeprazole significantly reduces their effectiveness.
Serious Warnings and Precautions
Masking of Serious Conditions: Omeprazole relieves symptoms of acid-related conditions effectively, but symptom relief does not rule out the presence of serious underlying disease including gastric cancer. Alarm symptoms including unintentional weight loss, persistent difficulty swallowing, persistent vomiting, vomiting blood, passing black or bloody stools, or severe persistent abdominal pain must be investigated by a doctor before starting or continuing omeprazole treatment. Never use this medication to self-medicate if alarm symptoms are present.
Clostridium difficile-Associated Diarrhea: Use of proton pump inhibitors including omeprazole has been associated with an increased risk of Clostridium difficile infection, a serious bacterial infection causing severe diarrhea. The risk is higher with prolonged use and in hospitalized patients or those taking antibiotics. Contact your doctor if you develop persistent watery diarrhea, abdominal cramping, or fever during or after treatment.
Bone Fracture Risk: Long-term use of proton pump inhibitors, particularly at high doses and for periods exceeding one year, has been associated with an increased risk of fractures of the hip, wrist, and spine, particularly in older adults. Patients requiring long-term PPI therapy should discuss bone health with their doctor and ensure adequate calcium and vitamin D intake.
Hypomagnesemia (Low Magnesium): Prolonged use of PPIs, generally for more than three months, can cause low magnesium levels in the blood, which may cause muscle spasms, irregular heartbeat, seizures, dizziness, and tremors. Your doctor may monitor your magnesium levels during long-term treatment. Magnesium supplementation may be required in some patients.
Vitamin B12 Deficiency: Long-term acid suppression can impair absorption of vitamin B12, potentially leading to deficiency over time. Patients on long-term omeprazole therapy, particularly older adults and those with poor dietary intake, should discuss B12 monitoring with their doctor.
Subacute Cutaneous Lupus Erythematosus (SCLE): PPI use has been associated with rare cases of SCLE, a skin condition causing rash and joint pain. If you develop skin lesions particularly on sun-exposed areas, stop taking omeprazole and consult your doctor promptly.
Kidney Disease: Acute interstitial nephritis has been observed in some patients taking PPIs. Stop taking omeprazole and seek medical attention if you experience a sudden decrease in urination, blood in urine, swelling in legs or feet, or unexplained fatigue during treatment.
Contact emergency services or go to the nearest emergency room immediately if you experience severe allergic reactions including difficulty breathing, facial swelling, or severe skin reactions, vomit blood or material that looks like coffee grounds, pass black tarry or bloody stools, develop severe chest pain, or experience sudden severe abdominal pain.
Consult Your Doctor Before Use If You Have:
Liver disease or impaired liver function, as omeprazole is metabolized in the liver and dose adjustment may be required, kidney disease, osteoporosis or risk factors for bone fractures, low magnesium levels or a history of hypomagnesemia, are pregnant or breastfeeding, are taking any medications that interact with omeprazole, have previously experienced an allergic reaction to any PPI, are scheduled for an endoscopy or other diagnostic procedure (your doctor may advise temporarily stopping omeprazole beforehand), have a history of Clostridium difficile infection, or have been experiencing symptoms for more than 4 weeks without a formal diagnosis.
Common Side Effects
Risek 20mg is generally well-tolerated. However, some people may experience headache, nausea or vomiting, abdominal pain or stomach discomfort, diarrhea or constipation, flatulence and bloating, dizziness, and dry mouth. Less commonly, patients may experience skin rash, swelling of the hands, feet, or ankles, sleep disturbances, and fatigue.
Serious but rare side effects require immediate medical attention. Stop use and seek emergency care if you develop severe allergic reactions including anaphylaxis, Stevens-Johnson syndrome or toxic epidermal necrolysis (severe blistering skin reactions), signs of low magnesium including muscle cramps, irregular heartbeat, or seizures, severe watery diarrhea that does not improve, sudden decrease in urination or signs of kidney problems, or signs of liver problems including jaundice, dark urine, or persistent upper abdominal pain.
Drug Interactions
Omeprazole can significantly affect the absorption and metabolism of several medications due to its acid-suppressing effects and its action on liver enzymes. Inform your doctor or pharmacist if you are taking clopidogrel, a blood thinner used to prevent heart attacks and strokes (omeprazole can reduce its effectiveness), rilpivirine or nelfinavir for HIV treatment (omeprazole is contraindicated with these medications), methotrexate used for cancer or autoimmune conditions (PPIs can increase methotrexate levels in the blood), warfarin or other anticoagulants, certain antifungal medications including ketoconazole and itraconazole whose absorption depends on stomach acid, digoxin for heart conditions, certain HIV medications including atazanavir and saquinavir, iron supplements, erlotinib used for cancer, tacrolimus and other immunosuppressants, diazepam and certain other benzodiazepines, phenytoin and certain anti-seizure medications, or any prescription or over-the-counter medications, vitamins, or herbal supplements.
How to Take Risek 20mg
Adults and adolescents over 12 years should take the dose prescribed by their doctor. For most conditions, the standard dose is one 20mg capsule once daily, typically taken in the morning before eating for optimal effectiveness. For H. pylori eradication, omeprazole is taken twice daily as part of a combination antibiotic regimen. For Zollinger-Ellison syndrome, higher doses may be required as determined by your doctor.
Swallow capsules whole with water. Do not crush, chew, or open the capsule unless specifically instructed by your doctor or pharmacist, as this may affect the enteric coating that protects the medication from stomach acid before it reaches its site of action. If you have difficulty swallowing capsules, consult your pharmacist about alternative administration methods. Take this medication at the same time each day to maintain consistent therapeutic levels.
For GERD and erosive esophagitis, the typical treatment duration is 4-8 weeks. For gastric ulcers, treatment is generally continued for 4-8 weeks. Long-term maintenance therapy may be prescribed for certain conditions, but should only continue under medical supervision with regular review of whether ongoing treatment remains necessary.
Based on our pharmacists' experience, patients achieve the best therapeutic outcomes from omeprazole when they take it 30-60 minutes before the first meal of the day. This timing ensures the medication is absorbed and active when the proton pumps are most stimulated by food intake, maximizing acid suppression throughout the day. Patients should also be advised that lifestyle modifications significantly enhance treatment outcomes and may reduce the long-term need for acid suppression medication. These include maintaining a healthy weight, eating smaller and more frequent meals, avoiding trigger foods such as spicy, fatty, or acidic foods, elevating the head of the bed for nighttime reflux symptoms, avoiding lying down within 2-3 hours after eating, and limiting alcohol and caffeine consumption.
What You Need to Know Before Starting Treatment
Omeprazole is a symptom-management medication for acid-related conditions. It does not treat the underlying cause of GERD or prevent its progression if lifestyle factors contributing to the condition are not addressed. For conditions such as GERD, long-term reliance on PPIs without addressing contributing lifestyle factors is not considered best practice in current clinical guidelines.
Duration of Treatment: Omeprazole should be used for the shortest duration appropriate to the condition being treated. Many patients use PPIs for far longer than clinically necessary. If you have been taking omeprazole for more than 8 weeks, your doctor should review whether continued treatment is still required. Long-term PPI use is associated with several potential risks including bone fracture, magnesium deficiency, vitamin B12 deficiency, and increased susceptibility to certain infections.
PPI Rebound Acid Hypersecretion: Stopping omeprazole abruptly after prolonged use can cause a temporary increase in stomach acid production, known as rebound acid hypersecretion, which may cause heartburn and discomfort. This can lead patients to believe they still need the medication when in fact their symptoms are a withdrawal effect. If stopping long-term omeprazole therapy, your doctor may recommend gradually reducing the dose rather than stopping suddenly.
H. pylori Testing: If you have a gastric or duodenal ulcer, your doctor should test for H. pylori infection before starting treatment. Untreated H. pylori significantly increases the risk of ulcer recurrence. When H. pylori is present, combination therapy with omeprazole and two antibiotics is required for eradication.
Pregnancy and Breastfeeding: Omeprazole should be used during pregnancy only when clearly necessary and under the guidance of a healthcare provider. While studies have not shown definitive evidence of harm, the general principle of using the lowest effective dose for the shortest duration applies. Omeprazole passes into breast milk in small amounts. Consult your healthcare provider before using this medication while breastfeeding.
Storage Instructions
Store at room temperature below 25°C, protected from moisture and direct sunlight. Keep in original packaging until ready to use. Keep in a dry place. Keep out of reach and sight of children. Do not use after the expiration date printed on the package. Do not transfer capsules to other containers. Dispose of expired or unused medication responsibly.
Manufacturer Information
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Regulatory Status: Risek 20mg capsules are available by prescription for most indications. Lower doses of omeprazole may be available over-the-counter in some regions for short-term self-treatment of heartburn and acid reflux. Always consult your healthcare provider for diagnosis and appropriate treatment guidance.
Medical Review Notice: This product information should be reviewed by a licensed pharmacist or physician to ensure clinical accuracy and compliance with current prescribing guidelines. Patients should consult their healthcare provider or pharmacist for personalized medical advice, particularly those requiring long-term acid suppression therapy, older adults, and those taking multiple medications.
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