Omeprazole Dosage and Clinical Information
BNF Dosage Guidelines
According to BNF guidance, omeprazole 20mg once daily is the standard dose for treating gastro-oesophageal reflux disease (GORD) and dyspepsia. For severe symptoms, the dose may be increased to 40mg once daily. Treatment duration typically ranges from 4-8 weeks for initial healing, with maintenance therapy at the lowest effective dose if required.
Clinical Indications
Omeprazole is indicated for several acid-related disorders including GORD, peptic ulcer disease, and Zollinger-Ellison syndrome. It may also be prescribed for H. pylori eradication therapy at 20mg twice daily combined with appropriate antibiotics. The medication works by irreversibly inhibiting the proton pump in gastric parietal cells, reducing acid secretion by up to 90%.
Administration Guidelines
For optimal efficacy, omeprazole should be taken 30-60 minutes before meals, preferably in the morning. Capsules should be swallowed whole with water - they should not be chewed or crushed as this affects the enteric coating. For patients with swallowing difficulties, dispersible tablets or liquid formulations may be more suitable alternatives.
Treatment Considerations
Long-term omeprazole use requires careful monitoring due to potential risks including vitamin B12 deficiency, hypomagnesaemia, and increased fracture risk. EverydayMeds stocks various PPI options including omeprazole 20mg capsules, Losec MUPS tablets, and alternative treatments like lansoprazole and pantoprazole to suit individual patient needs and preferences.
Contraindications and Interactions
Omeprazole should be used cautiously in patients with severe liver impairment, and dose reduction may be necessary. Important drug interactions include clopidogrel (reduced efficacy), warfarin (increased bleeding risk), and certain antifungals. Regular review is recommended to assess ongoing need and consider step-down therapy where appropriate.
