metformin can lower vitamin B12 levels

April 2002

Many physicians and pharmacists don't realize that metformin can lower vitamin B12 levels.

About 10% of patients on metformin develop low vitamin B12 levels...probably due to reduced B12 absorption.

The concern is that prolonged use of metformin could lead to a vitamin B12 deficiency that could be easily missed.

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Table of Contents

new guidelines for PREVENTING type 2 diabetes
Cardiology ACE inhibitors and angiotensin receptor blockers are especially beneficial for preventing stroke
Cardiology More patients will be taking Plavix (clopidogrel)
Cardiology continuing statins when patients are hospitalized for severe chest pain
Osteoporosis latest thinking on treating osteoporosis in postmenopausal women
Vaccines current vaccine shortages
Vaccines Lymerix is off the market
Alzheimer's Disease link between homocysteine and dementia
Diabetes metformin can lower vitamin B12 levels
Diabetes stronger warnings about Actos and heart failure
Diabetes confused about the "sugar-free" candies marketed to patients with diabetes
Obesity & Weight Loss new concerns about the safety of Meridia (sibutramine)
Obesity & Weight Loss natural weight loss products
nocebo effect
Practice Claritin will soon go OTC