Clinical trials: Vitamin Deficiencies
Hypovitaminosis D, Hypovitaminosis
Evaluating Response to Vitamin D3 and K2 Supplementation in Healthcare Personnel
The main purpose of this research study is to learn about the effects of supplemental vitamin D3 and vitamin K2 on blood levels and the gut microbial community, called the gut microbiome.
- Trial name
- NCT07199829
- Testing
- Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3
- Where
- United States
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Vitamin D Deficiency
Vitamin D Raising and Maintaining Blood Serum 25(OH)D3 Levels
Analyze the amount of change in blood serum Vitamin D levels in patients of 3 different dosing groups and how their levels change over a 3 month period of time.
- Trial name
- VitD (NCT03099759)
- Testing
- Vitamin D
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Anemia, Nutritional Deficiency
Anemia in Older Adults
A cross-sectional study with 829 older Mexican adults were recruited from July to September 2015, from four localities in the southern region of México.
- Conditions
- Anemia, Nutritional Deficiency, Inflammation
- Trial name
- NCT04820465
- Testing
- Non available due to cross-sectional study design
- Volunteers
- 829 people, healthy volunteers welcome
- Sponsor
- Instituto Nacional de Salud Publica, Mexico
Periodontal Diseases, Gingivitis
The Effect of Vitamin D Supplementation on the Anti-inflammatory Response in Periodontal Diseases
A review of the literature revealed that while there are studies investigating the relationship between vitamin D and periodontal disease, there are no studies investigating the anti-inflammatory effect of vitamin D on…
- Conditions
- Periodontal Diseases, Gingivitis, Vitamin D Deficiency
- Trial name
- NCT07636733
- Testing
- Non-surgical periodontal treatment, Vitamin D administration, Oral Hygiene Education and Patient Motivation
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Recep Tayyip Erdogan University Training and Research Hospital
Pregnancy
Néevo®/NéevoDHA® P.L.U.S. Program (Progress Through Learning, Understand & Support)
This is an observational study in which patients who have been prescribed Néevo®/NéevoDHA® are invited to participate in surveys about their pregnancy and experiences with Néevo®/NéevoDHA®.
- Trial name
- NCT01358552
- Testing
- Néevo®/ NéevoDHA®
- Where
- United States
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Pamlab, Inc.
Vitamin D Deficiency
Prevalence of Early Childhood Caries in Egyptian Children With Serum Vitamin D Deficiency.
To detect the effect of vitamin D deficiency in the development of early childhood caries (ECC) among Egyptian children.
- Trial name
- NCT03158155
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Nancy Ahmed El Salmawy
Vitamin D Deficiency
Vitamin D Supplementation of Lactating Mothers
The investigators would like to test the hypothesis that maternal vitamin D supplementation during lactation in dose 1200IU/d (400IU from multivitamins + 800 IU cholecalciferol) is more effective than 400IU/d (400IU from…
- Trial name
- MAVID (NCT01506557)
- Testing
- cholecalciferol
- Where
- 5 sites in Poland
- Volunteers
- 174 people, healthy volunteers welcome
- Sponsor
- Children's Memorial Health Institute, Poland
Precursor Cell Lymphoblastic Leukemia-Lymphoma, Vitamin D Deficiency
Nutrition and Body Composition in Acute Lymphoblastic Leukemia
Many adolescents with acute lymphoblastic leukemia (ALL) have been found to have low bone density by the end of treatment. This can lead to long-term suffering in survivors due to poor bone health.
- Trial name
- NCT01317940
- Testing
- Vitamin D and Calcium Citrate
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Los Angeles
Vitamin A Deficiency
Newborn Vitamin A (VA) Supplementation Pilot Project, Pakistan
Vitamin A is an essential micronutrient for the normal functioning of the visual system, growth and development, immunity and reproduction. Its deficiency causes anemia, growth retardation and xerophthalmia.
- Trial name
- VA (NCT00674089)
- Testing
- Vitamin A
- Where
- Pakistan
- Volunteers
- 7,400 people, healthy volunteers welcome
- Sponsor
- Aga Khan University
Vitamin D Deficiency
The D-BIICEP Study
Athletes and active individuals have been identified as an at-risk group for a low vitamin D status, specifically those residing in countries of higher latitude (such as the United Kingdom).
- Trial name
- D-BIICEP (NCT03253055)
- Testing
- DEXA, pQCT, Lifestyle Questionnaire
- Where
- 2 sites in United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Surrey
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 Deficiency
Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland
The purpose of this study is to determine the prevalence of vitamin D deficiency among the population of pregnant women receiving prenatal care and giving birth at the investigators' clinic.
- Trial name
- PCVDDPWS (NCT02904720)
- Where
- Switzerland
- Volunteers
- 1,199 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypovitaminosis D
A Study on Oral Vitamin D Megadoses
The purpose of this study is to determine if infrequent administration of oral vitamin D megadoses is effective treatment to maintain serum 25-hydroxyvitamin D(3) above target levels of 50-75 nmol/L.
- Trial name
- NCT01067898
- Testing
- vitamin D3 (cholecalciferol), olive oil, calcium carbonate
- Where
- Finland
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Helsinki University Central Hospital
Vitamin D Deficiency, Hypocalcemia
Effect of Vitamin D Supplement on Disease Activity in SLE
To study the effect of vitamin D supplementation on disease activity of SLE ( SLEDAI-2K ) and IL-6 level
- Conditions
- Vitamin D Deficiency, Hypocalcemia, Hyperparathyroidism, Systemic Lupus Erythematosus (Disorder)
- Trial name
- NCT05260255
- Testing
- vitamin D2 ( calciferol )
- Where
- Thailand
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Department of Medical Services Ministry of Public Health of Thailand
Chronic Renal Insufficiency, Renal Osteodystrophy
Clinical Observation on Bone Metabolism Induced by Chronic Renal Insufficiency
Patients with chronic renal insufficiency usually develop secondary osteoporosis or bone loss, which is called renal osteodystrophy.
- Trial name
- NCT02147782
- Where
- 4 sites in China
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Shanghai University of Traditional Chinese Medicine