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Vitamin D Insufficiency clinical trials

View clinical trials related to Vitamin D Insufficiency.

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NCT ID: NCT04865432 Completed - Clinical trials for Vitamin D Deficiency

Solius UV Light Source in Improving Serum Levels of 25-hydroxyvitamin D

Start date: August 24, 2021
Phase: N/A
Study type: Interventional

This is a feasibility interventional study seeking to determine the safety and efficacy of the Solius Photobiologic System in increasing the serum levels of 25(OH)D in a vitamin D deficient/insufficient adult population.

NCT ID: NCT04780776 Completed - Clinical trials for Vitamin D Deficiency

Evaluating the Effect of Solius UV Light Source in Improving Vitamin D Status

Start date: February 23, 2022
Phase: N/A
Study type: Interventional

The aim of this study is to evaluate the safety and effectiveness of the Solius Photobiological System in improving serum levels of 25-hydroxyvitamin D in vitamin D deficient/ insufficient adults of various skin types. The invetigators will conduct an double-blinded randomized clinical trial in 100 adults to compare the changes in serum 25-hydroxyvitamin D levels between subjects who received and do not receive weekly exposures to Ultraviolet B Radiation (UVB) generated by the Solius Photobiological System for 16 weeks.

NCT ID: NCT04735926 Completed - Clinical trials for Vitamin D Deficiency

Efficacy and Safety of Calcifediol vs Placebo in Subjects With Vitamin D Deficiency

WORFEROL
Start date: December 23, 2020
Phase: Phase 2/Phase 3
Study type: Interventional

This is a randomised, double-blind, double-dummy, multicentre, dose-ranging clinical trial in subjects with vitamin D deficiency or insufficiency. Its general objective is to determine the efficacy and safety of different doses of calcifediol soft gelatin capsules (SGCs) compared to placebo.

NCT ID: NCT03660800 Completed - Clinical trials for Secondary Hyperparathyroidism

Pharmacokinetics and Safety Study of CTAP101 Capsules in Japanese and Non-Japanese Healthy Subjects and Non-Japanese Healthy Subjects

Start date: August 20, 2018
Phase: Phase 1
Study type: Interventional

Pharmacokinetics and Safety Study of CTAP101 Capsules in Japanese and non-Japanese Healthy Subjects

NCT ID: NCT03621553 Active, not recruiting - Sarcoidosis Clinical Trials

Vitamin D Homeostasis in Sarcoidosis

Start date: July 1, 2010
Phase: Phase 4
Study type: Interventional

This study evaluates the relationship between vitamin-D status and severity of sarcoidosis, and the effects of vitamin-D repletion in vitamin-D insufficient patients with sarcoidosis. Half the patients with sarcoidosis who are vitamin-D insufficient will receive standard vitamin-D supplementation via standard regimen while the other half will receive a placebo. Sarcoidosis patients who are vitamin-D sufficient will also act as controls.

NCT ID: NCT03588884 Completed - Clinical trials for Vitamin D Insufficiency

Repeated-dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic of CTAP101, Immediate-release Calcifediol, High-dose Cholecalciferol, and Paricalcitol Plus Low-dose Cholecalciferol in Patients With Secondary Hyperparathyroidism, Chronic Kidney Disease 3-4 and Vitamin D Insufficiency

Start date: June 8, 2018
Phase: Phase 4
Study type: Interventional

An Open-Label, Repeated-Dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic Study of Oral CTAP101 Capsules, Immediate- Release (IR) Calcifediol, High-Dose Cholecalciferol, and Paricalcitol Plus Low-Dose Cholecalciferol in Patients with Secondary Hyperparathyroidism, Stage 3 or 4 Chronic Kidney Disease and Vitamin D Insufficiency

NCT ID: NCT02856776 Completed - Clinical trials for Vitamin D Insufficiency

Gene Expression, Metabolomic, Microbiome, and Calcium Metabolism in Response to Varied Vitamin D Dosages

Start date: December 1, 2017
Phase: N/A
Study type: Interventional

There continues to be debate as to how much vitamin D an adult requires to be vitamin D sufficient. A multitude of association studies have suggested that improving serum 25(OH)D >30 ng/mL may reduce risk of many chronic illnesses and improve immune function. The aim of this study is to define dynamic changes in PTH, broad gene expression in circulating immune cells, metabolomics, and microbiome profile in response to varying doses of vitamin D supplementation.

NCT ID: NCT02212652 Terminated - Clinical trials for Vitamin D Deficiency

Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative Outcomes

VISTA
Start date: January 2017
Phase: N/A
Study type: Interventional

VISTA is looking to see if vitamin D supplements before bariatric surgery might improve vitamin D stores, which may help to prevent some complications like infections. Who can join this research study? - Approved to undergo bariatric surgery—Roux-en-Y Gastric Bypass or Vertical Sleeve Gastrectomy—at the Johns Hopkins Bayview Medical Center - 18 to 64 years of age - BMI of 35 to 49.9 kg/m2 - VitD insufficient or deficient prior to having surgery What will happen if a participant chooses to participate in this research study? - The participant will be randomly assigned (by chance) to receive either: - Standard care plus vitamin D supplements or - Standard care plus a placebo (contains no vitamin D) - Either would be provided at no cost to the participant - The investigators will ask the participant to complete a survey on the day of surgery regarding supplement use - The investigators will follow the participants medical record through the 12 month follow up clinic visit.

NCT ID: NCT02187146 Completed - Infertility Clinical Trials

The Effects of Serum Vitamin D and IVF Outcome

VIDIO
Start date: September 2013
Phase: N/A
Study type: Observational

The purpose of this study is to investigate whether an association exists between serum vitamin D levels and IVF treatment outcome

NCT ID: NCT02136407 Completed - Clinical trials for Vitamin-D Insufficiency

Seasonal Variations in Serum 25-hydroxy Vitamin-D Levels in a Swedish Cohort

Start date: October 2009
Phase: N/A
Study type: Observational

The purpose of this study was to study seasonal inter-individual and intra-individual variations in S-25(OH)D and to explore parameters associated with S-25-OHD in healthy Swedish adults.