Drugs Home > Lansoprazole Dosing

The dose of lansoprazole normally recommended for adults with symptoms of gastroesophageal reflux disease (GERD) is 15 mg a day for up to eight weeks. When cases of erosive esophagitis are treated with lansoprazole, dosing guidelines usually recommend starting with a dose of 30 mg a day for up to eight weeks.

Lansoprazole Dosing: An Introduction

The dose of lansoprazole (sold under the brand name Prevacid®) prescribed by your healthcare provider will vary depending on a number of factors, including:
  • The medical condition you are being treated for
  • Other medical conditions you may have
  • Other medications you may be taking.
As is always the case, do not adjust your dose unless specifically instructed by your healthcare provider to do so.

Recommended Lansoprazole Dosage for GERD Symptoms

For people experiencing gastroesophageal reflux disease (GERD) symptoms, the recommended lansoprazole dosage is 15 mg once a day for up to eight weeks. If the symptoms of GERD do not improve, your doctor may recommend GERD treatment with lansoprazole for another eight weeks.

Dose of Lansoprazole Recommended for Treating Erosive Esophagitis

The recommended starting dosage of lansoprazole for the healing of erosive esophagitis is 30 mg once a day for up to eight weeks. Once the erosive esophagitis is healed, a daily dose of 15 mg may be recommended to prevent the return of the erosive esophagitis.

Recommended Lansoprazole Dosage for Healing of Duodenal Ulcers

The recommended starting dose of lansoprazole for the healing of duodenal ulcer is 15 mg once a day for four weeks. Once the ulcer has healed, your doctor may recommend a lansoprazole dosage of 15 mg once a day to prevent the ulcer from returning.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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