Risek 20mg - ឱសថស្ថាន សិរីមង្គលថ្មី
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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

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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