Efficacy of Daily Vitamin D3 Supplementation in Normal Weight Adolescents

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: NCT01058720
Recruitment Status : Completed
First Posted : January 29, 2010
Last Update Posted : January 1, 2016
Information provided by (Responsible Party):
Seema Kumar, Mayo Clinic

Brief Summary:
The study is designed to evaluate the increment of serum 25 (OH) vitamin D levels in normal weight adolescents following a 12-week supplementation with Vitamin D3 2000 IU/day.

Condition or disease Intervention/treatment Phase
Vitamin D Deficiency Dietary Supplement: Vitamin D3 Phase 4

Detailed Description:
Twenty normal weight adolescents between ages 12-18 that are age and gender would receive vitamin D3 supplementation at a dose of 2000 IU/day. Levels of 25(OH)vitamin D would be measured at baseline and after 12 weeks.Relationship between 25 OH vitamin D levels and other demographic variables will be assessed.The primary endpoint in this study is the 25 OH Vitamin D level at 12 weeks.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Pilot Study to Evaluate the Efficacy of Daily Vitamin D3 Supplementation in Normal Weight Adolescents
Study Start Date : December 2009
Actual Primary Completion Date : January 2011
Actual Study Completion Date : January 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Vitamin D
U.S. FDA Resources

Arm Intervention/treatment
Experimental: Vitamin D3
Patients would receive 2000 IU of vitamin D3 daily for 12 weeks
Dietary Supplement: Vitamin D3
2000 IU orally once daily for 12 weeks

Primary Outcome Measures :
  1. Increment in 25(OH)vitamin D level [ Time Frame: 12 weeks ]

Secondary Outcome Measures :
  1. Serum Calcium [ Time Frame: 12 weeks ]

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion criteria:

  • Subjects between ages 12 and 18 years with BMI between the 5th and the 85th percentile for age and gender.

Exclusion Criteria:

  • Subjects with 25 (OH)- D levels >80 ng/mL
  • Serum calcium >10.8 mg/dL
  • Serum phosphorus > 5.5 mg/dl
  • Pregnancy or nursing
  • Current cancer
  • Patients on multivitamin supplementation
  • Dietary calcium intake exceeding 1500 mg/day
  • Hepatic or renal disorders
  • Type 1 or Type 2 diabetes mellitus
  • Those receiving insulin, metformin, or oral hypoglycemic medications
  • Malabsorption disorders (Celiac disease, Cystic fibrosis, Inflammatory bowel disease)

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): NCT01058720

United States, Minnesota
Mayo Clinic
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Seema Kumar, MD Mayo Clinic

Responsible Party: Seema Kumar, PI, Mayo Clinic Identifier: NCT01058720     History of Changes
Other Study ID Numbers: 09-004969
First Posted: January 29, 2010    Key Record Dates
Last Update Posted: January 1, 2016
Last Verified: December 2015

Keywords provided by Seema Kumar, Mayo Clinic:
Vitamin D

Additional relevant MeSH terms:
Vitamin D Deficiency
Deficiency Diseases
Nutrition Disorders
Vitamin D
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents