Duodenal & benign gastric ulcers 20 mg once daily for 4-8 wk. Dose may be increased to 40 mg once daily in severe or recurrent cases.
Maintenance for recurrent duodenal ulcer 20 mg once daily.
Reflux oesophagitis 20 mg once daily for 4-8 wk.
Zollinger-Ellison syndrome Initially 60 mg once daily. Usual dose: 20-120 mg daily (>80 mg in 2 divided doses).
H pylori eradication Triple therapy: Omeprazole 20 mg w/ amoxicillin 1 g & clarithromycin 500 mg, all bd for 1 wk or omeprazole 20 mg w/ clarithromycin 250 mg & metronidazole 400 mg, all bd for 1 wk or omeprazole 40 mg once daily w/ amoxicillin 500 mg & metronidazole 400 mg, both tds for 1 wk. Dual therapy: omeprazole 40 mg daily w/ amoxicillin 1.5 g daily in divided doses for 2 wk.