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Efficacy and Safety Study of Chromium Picolinate + Biotin on Glucose and Cholesterol Control in T2DM

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00289354
Recruitment Status : Completed
First Posted : February 9, 2006
Last Update Posted : February 9, 2006
Information provided by:
Nutrition 21, Inc.

Brief Summary:
To evaluate the effect of the combination of chromium picolinate (600 μg Cr) + biotin (2 mg) versus placebo on glycosylated hemoglobin (HbA1c), lipid profiles (Total-C, HDL-C, LDL-C, TGs, TG/HDL ratio, etc), and pharmacoeconomic outcomes as measured at the Baseline Visit and 90 days later at the Final Visit. Secondarily, to measure the effect of chromium picolinate (600 μg Cr) + biotin (2 mg) versus placebo on patient quality of life, fasting and post-prandial blood sugar levels, fasting insulin, and anti-hyperglycemic medication usage.

Condition or disease Intervention/treatment Phase
Diabetes Mellitus, Type 2 Drug: Chromium Picolinate (600 mcg Cr) + biotin (2 mg) Not Applicable

Detailed Description:
There will be an Initial Pre-Screening Contact, two office visits (Baseline and Final), and two mid-study phone contacts with the subject during the course of the study. Volunteers will take either chromium picolinate (600 μg Cr) + biotin (2 mg) (n=400) or placebo (n=200) once daily just prior to the morning meal for 90 days. Assessments for glycosylated hemoglobin, lipid profiles, and quality of life will be taken at the Baseline Visit. After 90 days another set of assessments will be taken at the Final Visit for comparison with the baseline values. All subjects will under go a brief physical exam, a medical history assessment, and a comprehensive concomitant medications assessment as well as provide blood and urine samples at the baseline and final visits to ensure subject safety is maintained. The subject will be contacted, by a central call center, between visits at Day 30 and Day 60 to ensure study compliance by reminding the subject to take all doses of study product, perform the daily blood glucose monitoring, and complete the study diary daily.

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Study Type : Interventional  (Clinical Trial)
Enrollment : 600 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: Randomized, Double Blinded, Placebo Controlled, Study to Evaluate Improvements in Glycemic Control, Lipid Levels, Quality of Life and Healthcare Costs After Daily Administration of Chromium Picolinate and Biotin in Patients With T2DM
Study Start Date : March 2003
Study Completion Date : November 2005

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. HbA1c: Baseline and Final Visits
  2. Lipid Panels (Total-C, HDL, LDL, LDL, VLDL, lipid ratios, etc)Baseline and Final Visits
  3. Pharmacoeconomic outcomes (as deduced by changes in HbA1c)

Secondary Outcome Measures :
  1. Fasting Plasma Glucose: Baseline and Final Visits
  2. Fasting Insulin: Baseline and Final Visits
  3. HOMA-IR and HOMA-BCF: Baseline and Final Visits
  4. Quality of Life: Baseline and Final Visits
  5. Post Prandial Glucose: Diary recordings of post meal values, 90 day continuous.
  6. Change in Rx Antihyperglycemic agents: Assessed at baseline and compared to final visit.
  7. HAMD-29: Change in depression/mood status; measured at baseline and final at a subset of two research centers. (n~30).
  8. ANCOVAs: Treatment outcomes based on treatment group compared to gender, ethnicity, age, co-morbidities, Rx medications, glycemic states at entrance, lipid status at entrance.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Diagnosis of type 2 diabetes > 12 months.
  2. Male and female between the ages of 18 and 70 years, inclusive.
  3. HbA1c > 7.0%.
  4. Subject must be receiving an anti-hyperglycemic medication. Medication dosage must be stable for at least 60 days prior to entering trial. Insulin usage must be for rescue purposes only. Rescue insulin use may not be more than once per week.
  5. Subjects with a body mass index (BMI) >/= 25 and < 35.
  6. Subject must be ambulatory.
  7. Willing to perform self-administered blood glucose monitoring.
  8. Willing to complete all study related requirements.
  9. Subject will provide written consent to participate in the trial and this consent must be given voluntarily.

Exclusion Criteria:

  1. Diagnosis of type 1 diabetes.
  2. Hypoglycemic event requiring EMS intervention within 12 months.
  3. Diabetic Ketoacidosis (DKA) within 12 months.
  4. Subjects taking any supplement containing chromium picolinate within the last 90 days prior to enrollment.
  5. Subjects taking a supplement or multivitamin containing any other form of chromium > 120 mcg/daily within the last 30 days prior to enrollment.
  6. Creatinine > 2.0 x ULN; AST or ALT > 2.0 x ULN; Total Bilirubin > 1.5 x ULN
  7. COPD, CHF, Angina, HTN, MI, or any other CVD requiring hospitalization within 12 months.
  8. History of cerebrovascular accident (CVA), pulmonary embolism (PE), or an unresolved deep vein thrombosis (DVT).
  9. History of CABG, PTCA, or any other reperfusion therapy within 12 months.
  10. Seated systolic BP > 160 mmHg.
  11. Morbid obesity.
  12. Any psychiatric or mental health issue that would prevent the subject from completing the study. (e.g. Severe depression, schizophrenia, high suicide risk, bi-polar disorder, dementia, substance abuse, etc,)
  13. History of any serious immunosuppressive disorder or current immunosuppressive therapy.
  14. Female subjects who are pregnant or nursing, or are planning on becoming pregnant during the study.
  15. Any illness or complication factor that, in the opinion of the investigator, would jeopardize the subject's health or well being by participating in the study or would interfere with the subject successfully completing the study.
  16. Current diagnosis of any uncontrolled metabolic disease that would affect carbohydrate or glucose metabolism other than type 2 diabetes. (e.g. hyper or hypothyroidism). (NOTE: Subject's condition must be stable for > 12 months with no medication changes within the last 12 months preceding enrollment. Subject's TSH must be within range of normality at the time of enrollment to qualify).
  17. Current participation in any other clinical research trial for any product or device, or participation in said clinical trials within 30 days prior to enrollment.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00289354

Sponsors and Collaborators
Nutrition 21, Inc.
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Study Director: Manley R Finch Nutrition 21, Inc.
Principal Investigator: Cesar Albarracin, MD Alpha Therapy Center
Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00289354    
Other Study ID Numbers: N 21 CPB-02003
First Posted: February 9, 2006    Key Record Dates
Last Update Posted: February 9, 2006
Last Verified: February 2006
Keywords provided by Nutrition 21, Inc.:
chromium picolinate
type 2 diabetes mellitus
Additional relevant MeSH terms:
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Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Picolinic acid
Trace Elements
Growth Substances
Physiological Effects of Drugs
Vitamin B Complex
Iron Chelating Agents
Chelating Agents
Sequestering Agents
Molecular Mechanisms of Pharmacological Action