Effect of long-term acid suppression therapy with proton pump inhibitors or H receptor blockers on serum vitamin B levels in elderly population.

Background: Long-term usage of acid suppression drugs like proton pump inhibitors (PPIs) or H receptor blockers in the elderly population has been found to result in vitamin B deficiency. However, the reports are equivocal.

Objective: To determine the serum vitamin B levels in elderly patients under chronic acid suppression therapy.