Clinical trials: Vitamin C
Osteoporosis, Vitamin D Deficiency
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)
The purpose of this study is to test the safety, tolerability and effectiveness of an investigational drug and dietary supplement to reduce the risk of vitamin D insufficiency and deficiency during the treatment of osteoporosis…
- Trial name
- NCT00092066
- Testing
- MK0217A, alendronate sodium (+) cholecalciferol / Duration of Treatment: 15 weeks
- Volunteers
- 717 people
- Sponsor
- Organon and Co
Bioavailability of Vitamin C
Comparison of Bioavailability of Liposomal and Traditional Formulation of Vitamin C
The aim of the study was to compare the profiles of vitamin C serum concentration in healthy volunteers after the single oral administration either in a liposomal or traditional formulation.
- Trial name
- NCT05843617
- Testing
- Liposomal Vitamin C, Traditional Vitamin C
- Where
- Poland
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- AronPharma Sp. z o. o.
Vitamin D Deficiency, Vitamin D Insufficiency
Efficacy and Safety of Calcifediol vs Placebo in Subjects With Vitamin D Deficiency
This is a randomised, double-blind, double-dummy, multicentre, dose-ranging clinical trial in subjects with vitamin D deficiency or insufficiency.
- Trial name
- WORFEROL (NCT04735926)
- Testing
- Calcifediol 75mcg, Calcifediol 100mcg, Calcifediol 125mcg
- Where
- 55 sites in Bulgaria, Czechia and 5 more
- Volunteers
- 674 people
- Sponsor
- Faes Farma, S.A.
Vitamin D
Pharmacokinetics Evaluation of Vitamin D Formulations
The primary objective of this study is to evaluate plasma concentrations of Vitamin D (25-hydroxyvitamin D; 1,25-dihydroxyvitamin D) of different Vitamin D formulations in healthy volunteers at two concentrations.
- Trial name
- NCT05209425
- Testing
- Vitamin D3
- Where
- Canada
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Factors Group of Nutritional Companies Inc.
Bioavailability of Vitamin D
Comparison of Bioavailability of Liposomal and Traditional Formulation of Vitamin D3
The aim of the study was to compare the profiles of 25-hydroxyvitamin D serum concentration in healthy adults after 4 weeks of using vitamin D supplementation either in a liposomal or a traditional formulation.
- Trial name
- NCT06010121
- Testing
- Liposomal Vitamin D, Traditional Vitamin D
- Where
- Poland
- Volunteers
- 27 people
- Sponsor
- AronPharma Sp. z o. o.
Vitamin D Deficiency
Evaluation Of The Effect Of L. Casei DG® On Vitamin D Absorption In Patients Under Vitamin D Supplementation.
Vitamin D deficiency is one of the most underdiagnosed and undertreated medical condition worldwide . The microbiome and vitamin D deeply influence each other and the immune system in many different ways.
- Trial name
- NCT05394207
- Testing
- L. casei DG® (Lactobacillus paracasei CNCM I-1572)
- Where
- United Arab Emirates
- Volunteers
- 46 people
- Sponsor
- SOFAR S.p.A.
Diabetes Mellitus, Type 1, Diabetes Mellitus
Diamyd Administered Into Lymph Nodes in Combination With Vitamin D in Type 1 Diabetes
The objective of DIAGNODE-2 is to evaluate the efficacy of Diamyd compared to Placebo, upon administration directly into a lymph node in combination with an oral vitamin D/Placebo regimen, in terms of preserving endogenous…
- Conditions
- Diabetes Mellitus, Type 1, Diabetes Mellitus, Autoimmune Diseases, Metabolic Disease
- Trial name
- NCT03345004
- Testing
- Diamyd, Vitamin D
- Where
- 18 sites in Czechia, Netherlands and 2 more
- Volunteers
- 109 people
- Sponsor
- Diamyd Medical AB
Secondary Hyperparathyroidism Due to Renal Causes, 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
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…
- Conditions
- Secondary Hyperparathyroidism Due to Renal Causes, Vitamin D Insufficiency, CKD Stage 3, CKD Stage 4
- Trial name
- NCT03588884
- Testing
- Calcifediol Oral Capsule, Calcifediol Oral Product, Cholecalciferol
- Where
- 3 sites in United States
- Volunteers
- 69 people
- Sponsor
- OPKO Health, Inc.
Vitamin D Deficiency
Comparative Pharmacokinetics of Two Different Oral Delivery Systems of Cholecalciferol
The aim of this study is to adapt the gold standard of research and to explore the comparative bioavailability and clinical efficacy of the two most commonly used forms of Cholecalciferol i.e. ampoules and softgel capsules.
- Trial name
- PLUTO (NCT05104970)
- Testing
- SunnyD insta ampoule, SunnyD STAT softgel capsule
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Scotmann Pharmaceuticals
Vitamin C Deficiency, Acute Disease
A Long-term Study to Describe the Use of PASCORBIN® 7.5 g in Patients With Vitamin C Deficiency
The aim of this long-term observational study is the documentation of the use of PASCORBIN® 7.5 g in patients with vitamin C deficiency.
- Conditions
- Vitamin C Deficiency, Acute Disease, Chronic Disease
- Trial name
- NCT02422901
- Testing
- vitamin C
- Where
- Germany
- Volunteers
- 5,000 people
- Sponsor
- Pascoe Pharmazeutische Praeparate GmbH
Vitamin D Deficiency
Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3
Vitamin D is a commonly available essential prohormone humans need to regulate blood calcium and has recently emerged as potentially helpful in combating severe COVID-19.
- Trial name
- ViDAS (NCT04885803)
- Testing
- Softgel Vitamin D3, Nano Liquid Vitamin D3, 25(OH)D Blood Serum Test
- Where
- United States
- Volunteers
- 114 people, healthy volunteers welcome
- Sponsor
- Inspired Life Medical, Inc.
Vitamin D
Assessment of the Safety & Tolerability of Long-term Use of Patented Transdermal Patches in Healthy Adults.
This is a pilot study to assess the safety and tolerability of long-term use of patented transdermal vitamin D patches in healthy adults.
- Trial name
- NCT04851990
- Testing
- To Better Days Large Patch, To Better Days Small Patch
- Where
- Ireland
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Horopito Limited
Vitamin C Deficiency
The Effect of Liposome Vitamin C on the Absorption and Metabolism of the Human Body.
To evaluate the difference between vitamin C in the form of oral liposomes and general vitamin C in a fixed period of time in plasma and urine.
- Trial name
- NCT04886752
- Testing
- vitamin C without liposome, liposomal process A vitamin C, liposomal process B vitamin C (Double Nutri™)
- Where
- Taiwan
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- TCI Co., Ltd.
Vitamin D Insufficiency, Secondary Hyperparathyroidism
Pharmacokinetics and Safety Study of CTAP101 Capsules in Japanese and Non-Japanese Healthy Subjects and Non-Japanese Healthy Subjects
Pharmacokinetics and Safety Study of CTAP101 Capsules in Japanese and non-Japanese Healthy Subjects
- Trial name
- NCT03660800
- Testing
- CTAP101 Capsules
- Where
- United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- OPKO Health, Inc.
Dementia With Vitamin B12 Deficiency
The Role of Methycobalamin in Early Dementia Patients With Vitamin B12 Deficiency and Hyperhomocysteinaemia.
Patients who fit the inclusion criteria are admitted into the study. They are given 3 IV injection of MBL in the first week and one tablet three times a day for 16 weeks.
- Trial name
- NCT00165711
- Testing
- Mecobalamin
- Where
- China
- Sponsor
- Eisai Co., Ltd.
Measure Absorption of Vitamin D in Blood
Bioequivalence Study on Vitamin D in Healthy Adults
The objective of this study is to evaluate and compare the bioequivalence between a single oral dose of vitamin D3 gummy vitamin versus vitamin D3 tablet in healthy adults.
- Trial name
- NCT03552653
- Testing
- Vitafusion Extra Strength Vitamin D
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Church & Dwight Company, Inc.
Bioequivalence of Vitamin D in Healthy Adults
Clinical Study on the Bioequivalence of Vitamin D in Healthy Adults
The objective of this clinical study is to evaluate and compare the bioequivalence between a single oral dose of vitamin D3 gummy vitamin versus vitamin D3 tablet in healthy adults.
- Trial name
- NCT03552666
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Church & Dwight Company, Inc.
Asthma, Vitamin D Deficiency
Rapid vs Maintenance Vitamin D Supplementation in Deficient Children With Asthma to Prevent Exacerbations.
The role of vitamin D in respiratory health remains uncertain. Whether vitamin D reduces clinically important exacerbations of childhood asthma remains uncertain.
- Trial name
- NCT01395589
- Testing
- Vitamin D
- Where
- Qatar
- Volunteers
- 597 people, healthy volunteers welcome
- Sponsor
- Hamad Medical Corporation
Vitamin D Deficiency
A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency
A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in adults with Vitamin D Deficiency
- Trial name
- NCT03233295
- Testing
- Vitamin D3 B.O.N. Injection
- Volunteers
- 108 people
- Sponsor
- Kwang Dong Pharmaceutical co., ltd.
Adverse Drug Events, Adverse Drug Reactions
YouScript IMPACT Registry
This multicenter observational study aims to investigate the benefits of providing pharmacogenetic testing with the YouScript Personalized Prescribing System which includes a clinical decision support tool and individualized…
- Conditions
- Adverse Drug Events, Adverse Drug Reactions, Drug Interaction Potentiation, Drug Metabolism, Poor, CYP2D6-RELATED
- Trial name
- IMPACT (NCT02191358)
- Where
- 7 sites in United States
- Volunteers
- 800 people
- Sponsor
- Genelex Corporation