Long-term use of proton pump inhibitors and vitamin B12 status in elderly individuals
Version of Record online: 10 JAN 2008
© 2008 The Authors
Alimentary Pharmacology & Therapeutics
Volume 27, Issue 6, pages 491–497, March 2008
How to Cite
DEN ELZEN, W. P. J., GROENEVELD, Y., DE RUIJTER, W., SOUVERIJN, J. H. M., LE CESSIE, S., ASSENDELFT, W. J. J. and GUSSEKLOO, J. (2008), Long-term use of proton pump inhibitors and vitamin B12 status in elderly individuals. Alimentary Pharmacology & Therapeutics, 27: 491–497. doi: 10.1111/j.1365-2036.2008.03601.x
- Issue online: 10 JAN 2008
- Version of Record online: 10 JAN 2008
- Publication data Submitted 3 December 2007 First decision 16 December 2007 Resubmitted 19 December 2007 Accepted 20 December 2007 Epub OnlineAccepted 10 January 2008
Background Some studies have shown that short-term use of proton pump inhibitors decreases the absorption of vitamin B12, but the results of studies into long-term proton pump inhibitor use and vitamin B12 deficiency are inconsistent.
Aim To investigate whether long-term proton pump inhibitor use is associated with an abnormal vitamin B12 status in elderly individuals.
Methods One hundred and twenty-five long-term (>3, years) proton pump inhibitor users aged 65, years and above were recruited from general practices. Their 125 partners (who did not use proton pump inhibitors) served as the reference group. Vitamin B12 status was determined by serum levels of vitamin B12 and homocysteine, and mean corpuscular volume.
Results No differences in mean vitamin B12 levels were observed between the long-term proton pump inhibitor users and their partners [345 (s.d. 126), pm vs. 339 (s.d. 133), pm, P, =, 0.73], even after adjustment for age, gender, Helicobacter pylori status and C-reactive protein levels (P, =, 0.87). Four proton pump inhibitor users and three partners had vitamin B12 levels <150, pm (3% vs. 2%, P, =, 1.00). No differences between the groups were observed in homocysteine levels and mean corpuscular volume.
Conclusions No association between long-term proton pump inhibitor use and vitamin B12 status was observed. Regular testing for low vitamin B12 levels in elderly patients on long-term treatment with proton pump inhibitors is therefore not recommended.