

B47 Street 371, Phnom Penh, Cambodia
Risek 20mg
Contact pharmacy for pricing
No prescription required
This medicine is available over the counter. Still, please consult your doctor or pharmacist before using new medication.
Last updated 29/05/2026 at 1:13 PM

B47 Street 371, Phnom Penh, Cambodia
Indication
Omeprazole is a proton pump inhibitor (PPI) used to treat gastroesophageal reflux disease (GERD), peptic ulcer disease, erosive esophagitis, Zollinger-Ellison syndrome, and as part of Helicobacter pylori eradication regimens.
Ingredients
- Omeprazole
Direction
Adults: 20 mg once daily before a meal (typically morning) for 4–8 weeks. For maintenance or H. pylori eradication, follow the prescriber's instructions. Swallow capsule/tablet whole; do not crush or chew.
Side effects
- Headache.
- Nausea
- diarrhea
- abdominal pain.
- Flatulence
- constipation.
- Rash.
- Elevated liver enzymes (rare).
- Hypomagnesemia and increased fracture risk with long
- term use.
Precautions
- Use with caution in patients with severe liver impairment.
- Long
- term use may cause hypomagnesemia and vitamin B12 deficiency.
- May increase risk of Clostridium difficile
- associated diarrhea.
- May reduce absorption of drugs requiring gastric acidity.
- Investigate if symptoms persist despite treatment (rule out malignancy).
- Pregnancy category C.
Indication
Omeprazole is a proton pump inhibitor (PPI) used to treat gastroesophageal reflux disease (GERD), peptic ulcer disease, erosive esophagitis, Zollinger-Ellison syndrome, and as part of Helicobacter pylori eradication regimens.
Ingredients
- Omeprazole
Direction
Adults: 20 mg once daily before a meal (typically morning) for 4–8 weeks. For maintenance or H. pylori eradication, follow the prescriber's instructions. Swallow capsule/tablet whole; do not crush or chew.
Side effects
- Headache.
- Nausea
- diarrhea
- abdominal pain.
- Flatulence
- constipation.
- Rash.
- Elevated liver enzymes (rare).
- Hypomagnesemia and increased fracture risk with long
- term use.
Precautions
- Use with caution in patients with severe liver impairment.
- Long
- term use may cause hypomagnesemia and vitamin B12 deficiency.
- May increase risk of Clostridium difficile
- associated diarrhea.
- May reduce absorption of drugs requiring gastric acidity.
- Investigate if symptoms persist despite treatment (rule out malignancy).
- Pregnancy category C.
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