Metformin Use and Vitamin B12 Deficiency

The primary objective is to determine the incidence of Vitamin B12 deficiency in patients on metformin therapy for diabetes.

Completed

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Key information

Conditions

Vitamin B12 Deficiency Avitaminosis Deficiency Diseases Diabetes Mellitus Diabetes Mellitus, Type 2 Endocrine System Diseases Glucose Metabolism Disorders Malnutrition Metabolic Diseases Nutrition Disorders Nutritional and Metabolic Diseases Type 2 Diabetes Mellitus Vitamin B 12 Deficiency Vitamin B Deficiency

Age range

20 year–80 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Staten Island University Hospital

Staten Island, New York, 10305, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Age 20-80; diagnosed with type 2 diabetes for at least 30 days

Exclusion criteria

known vitamin B12 or folate deficiency; pernicious anemia; on vitamin B12 therapy; hematological malignancy; methotrexate use; alcohol intake greater than two drinks per day; vegetarian diet; previous gastric surgery; inflammatory bowel disease

Treatment and study plan

Primary outcomes

Vitamin B12 level

Time frame: Single point

Secondary outcomes

methylmalonic acid

Time frame: single point

Sponsors and collaborators

Lead sponsor

Northwell Health

Other

Registry information

Important dates

Study start: 2007
Primary completion: 2008
Study completion: 2008
First posted: Jun 3, 2010
Registry last updated: Jul 31, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed