The recommended dose is given below

Use in adults

To treat symptoms of GORD such as heartburn and acid regurgitation:

• If your doctor has found that your food pipe (gullet) has been slightly damaged, the recommended dose is 20 mg once a day for 4-8 weeks. Your doctor may tell you to take a dose of 40 mg for a further 8 weeks if your gullet has not yet healed.
• The recommended dose once the gullet has healed is 10 mg once a day.
• If your gullet has not been damaged, the usual dose is 10 mg once a day.

To treat ulcers in the upper part of the intestine (duodenal ulcer):

• The recommended dose is 20 mg once a day for 2 weeks.
  Your doctor may tell you to take the same dose for a further 2 weeks if your ulcer has not yet healed.
• If the ulcer do not fully heal, the dose can be increased to 40 mg once a day for 4 weeks.

To treat ulcers in the stomach (gastric ulcer):

• The recommended dose is 20 mg once a day for 4 weeks.
  Your doctor may tell you to take the same dose for a further 4 weeks if your ulcer has not yet healed.
• If the ulcer do not fully heal, the dose can be increased to 40 mg once a day for 8 weeks.

To prevent the duodenal and stomach ulcers from coming back:

• The recommended dose is 10 mg or 20 mg once a day.
  Your doctor may increase the dose to 40 mg once a day.

To treat duodenal and stomach ulcers caused by NSAIDs (Non-Steroidal Anti-Inflammatory Drugs):

• The recommended dose is 20 mg once a day for 4–8 weeks.

To prevent duodenal and stomach ulcers if you are taking NSAIDs:

• The recommended dose is 20 mg once a day.

To treat ulcers caused by Helicobacter pylori infection and to stop them coming back:

• The recommended dose is 20 mg Omeprazole twice a day for one week
• Your doctor will also tell you to take two antibiotics among amoxicillin, clarithromycin and metronidazole.

To treat too much acid in the stomach caused by a growth in the pancreas (Zollinger-Ellison syndrome):

• The recommended dose is 60 mg daily.
• Your doctor will adjust the dose depending on your needs and will also decide how long you need to take the medicine for.