Clinical Trials Logo

Clinical Trial Summary

Vitamin D deficiency is common world wide. 25 OH vitamin D level is the best indicator of vitamin D status. The determination of the appropriate dose of vitamin D supplement is essential for management of vitamin D deficiency as well as for designing vitamin D fortification programs. The increments in 25 OH vitamin D levels following various doses of vitamin D supplement for different genders, body weights, and starting 25 OH vitamin D level have not been well defined. The time course of depletion of repleted vitamin D stores is also not known.

The investigators plan to conduct a double blind randomized study on 9 cohorts to determine levels of 25 OH vitamin D following supplementation with different doses of vitamin D3 for 5 months and their withdrawal for 3 months.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT01170507
Study type Interventional
Source King Faisal Specialist Hospital & Research Center
Contact
Status Withdrawn
Phase Phase 1/Phase 2
Start date December 2011
Completion date August 2016

See also
  Status Clinical Trial Phase
Active, not recruiting NCT04244474 - Effect of Vitamin D Supplementation on Improvement of Pneumonic Children Phase 1/Phase 2
Recruiting NCT05459298 - ViDES Trial (Vitamin D Extra Supplementation) N/A
Completed NCT04476511 - The Efficacy and the Safety of Vitamin D3 30,000 IU for Loading Dose Schedules Phase 3
Suspended NCT03652987 - Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Completed NCT03920150 - Vitamin D 24'000 IU for Oral Intermittent Supplementation Phase 3
Completed NCT03264625 - The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis Phase 2
Completed NCT04183257 - Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics Phase 4
Recruiting NCT05084248 - Vitamin D Deficiency in Adults Following a Major Burn Injury Phase 4
Completed NCT05506696 - Vitamin D Supplementation Study N/A
Completed NCT00092066 - A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227) Phase 3
Completed NCT03234218 - Vitamin D Levels in Liver Transplantation Recipients Prospective Observational Study
Completed NCT03203382 - Corneal Nerve Structure in Sjogren's
Completed NCT02906319 - Vitamin D and HbA1c Levels in Diabetic Patients With CKD N/A
Completed NCT02714361 - A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women N/A
Completed NCT02118129 - Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'. N/A
Completed NCT02275650 - The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter N/A
Completed NCT02187146 - The Effects of Serum Vitamin D and IVF Outcome N/A
Not yet recruiting NCT01419821 - Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5 N/A
Completed NCT01741181 - Vitamin D Supplementation in Patients With Diabetes Mellitus Type 2 Phase 4
Completed NCT01688102 - The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid Profile N/A