Clinical trials: Deficiency Vitamins
Development, Vitamin Deficiency
Vitamin B12, Neurodevelopment and Growth in Nepal
Rationale: Globally, vitamin B12 deficiency is one of the most common micronutrient deficiencies. The only relevant source of Vitamin B12 is animal-source foods.
- Conditions
- Development, Vitamin Deficiency, Malnutrition
- Trial name
- BeLive (NCT02272842)
- Testing
- Vitamin B12
- Where
- Nepal
- Volunteers
- 600 people
- Sponsor
- Centre For International Health
Leg Cramps, Nocturnal
Vitamin D for Painful Nocturnal Leg Cramps
1. Research question: Does vitamin D reduce the frequency and severity of nocturnal leg cramps in older persons who previously took quinine for leg cramps? 2.
- Trial name
- NCT00715429
- Testing
- vitamin d
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Coronary Artery Disease, Chronic Kidney Disease
Effect of Vitamin D Supplement on Inflammation Markers in High-Risk Cardiovascular Patients With Chronic Kidney Disease
The purpose of this study is to determine if vitamin D supplementation changes the results of certain tests associated with inflammation in the body using an oral, synthetic form of vitamin D called paricalcitol.
- Conditions
- Coronary Artery Disease, Chronic Kidney Disease, Hypovitaminosis D, Secondary Hyperparathyroidism
- Trial name
- VINCA-CKD (NCT01012414)
- Testing
- paricalcitol
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Thomas Jefferson University
Thromboembolism
Applying Pharmacogenetic Algorithms to Individualize Dosing of Warfarin
The purpose of this study is to determine whether DNA analysis improves the efficiency of dosing and safety in patients who are being started on warfarin therapy.Warfarin, a blood thinner (anticoagulant) prescribed to 1-2 million…
- Trial name
- Coumagen-II (NCT00927862)
- Testing
- IWPC adapted genotype-guided dosing algorithm for warfarin, Modified IWPC genetic-guided warfarin dosing algorithm, Standard of care treatment
- Where
- United States
- Volunteers
- 2,415 people
- Sponsor
- Intermountain Health Care, Inc.
Primary Hyperparathyroidism, Vitamin D Deficiency
Vitamin D Repletion in Primary Hyperparathyroidism
This study will look at the effect of 2 treatment regimens that contain vitamin D in a six-month treatment trial of patients with PHPT who are vitamin D deficient.
- Trial name
- NCT01306656
- Testing
- 10,000 IU Vitamin D3, Vitamin D
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Columbia University
Vitamin D Deficiency
Vitamin Deficiency in Immigrants, a Treatment Study
The purpose of this study is to determine the efficacy of different doses of vitamin D in persons, immigrated to Sweden from Middle East or Africa, with decreased S vitamin D.
- Trial name
- VIDI2 (NCT01419119)
- Testing
- Cholecalciferol high dose at Vitamin D deficiency, Cholecalciferol median dose at Vitamin D insufficiency, Cholecalciferol low dose at Vitamin D deficiency
- Where
- Sweden
- Volunteers
- 160 people
- Sponsor
- Umeå University
Pregnancy, Vitamin D Deficiency
Trial of Vitamin D Supplements to Raise Calcidiol Levels of Pregnant Women in Mongolia
A double-blind randomized, placebo-controlled trial comparing the impact of 600 IU, 2000 IU, or 4000 IU of Vitamin D3 on third trimester 25(OH)D levels and change from baseline.
- Trial name
- NCT02395081
- Testing
- 600 IU Vitamin D3 in prenatal vitamin, 2000 IU Vitamin D3 in prenatal vitamin, 4000 IU Vitamin D3 in prenatal vitamin
- Where
- Mongolia
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Vitamin D Deficiency
Vitamin D Deficiency, Insulin Resistance and FGF-23
The purpose of this project is to determine if treating vitamin D deficiency decreases insulin resistance and improves insulin secretion in healthy volunteers.
- Trial name
- NCT00491322
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 92 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Hypophosphatasia (HPP)
Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)
This clinical trial studies the safety and efficacy of asfotase alfa in infants and young children with infantile onset HPP.
- Trial name
- NCT00744042
- Testing
- asfotase alfa
- Where
- 10 sites in United States, Canada and 2 more
- Volunteers
- 11 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Hypophosphatasia
Open-Label Study of Asfotase Alfa in Infants and Children ≤ 5 Years of Age With Hypophosphatasia (HPP)
This clinical trial was conducted to study hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT01176266
- Testing
- asfotase alfa
- Where
- 23 sites in United States, Australia and 10 more
- Volunteers
- 69 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Cardiac Arrest, Shock
Thiamine vs. Placebo to Increase Oxygen Consumption After Cardiac Arrest
This study is to evaluate whether thiamine can increase oxygen consumption and lower lactate in patients who initially survive an in-hospital cardiac arrest.
- Conditions
- Cardiac Arrest, Shock, Lactic Acidosis, Thiamin Deficiency
- Trial name
- NCT02974257
- Testing
- Thiamine
- Where
- United States
- Volunteers
- 41 people
- Sponsor
- Beth Israel Deaconess Medical Center
Vitamin B6 Deficiency
Vitamin B6 Effects for Women Taking Birth Control Pills
Chronically inadequate B6 nutritional status is associated with aberrant one-carbon (1C) metabolism and health. Plasma pyridoxal phosphate (PLP) >30 nmol/L often has been considered to be the cutoff indicative of nutritional…
- Trial name
- NCT01128244
- Testing
- Vitamin B6, Infusion of labeled serine, methionine and leucine
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- University of Florida
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
Mesopic Vision, Night Vision Loss
Safety and Efficacy of 0.75% Phentolamine Ophthalmic Solution in Subjects With Post-refractive Surgery Visual Disturbances
Safety and efficacy of 0.75% Phentolamine Ophthalmic Solution to improve mesopic low contrast visual acuity in subjects with post-refractive surgery visual disturbances.
- Trial name
- LYNX-2 (NCT06349759)
- Testing
- phentolamine ophthalmic solution 0.75%, a non-selective alpha-1 and alpha-2 adrenergic antagonist
- Where
- 25 sites in United States
- Volunteers
- 200 people
- Sponsor
- Opus Genetics, Inc
Chronic Kidney Disease, Hyperparathyroidism, Secondary
Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
This study will evaluate the efficacy of CTAP101 Capsules versus placebo in reducing intact parathyroid hormone (iPTH) by at least 30% from pretreatment baseline; safety and tolerability of CTAP101 will also be evaluated
- Conditions
- Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
- Trial name
- NCT01704079
- Testing
- CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
- Where
- United States
- Volunteers
- 216 people
- Sponsor
- OPKO IP Holdings II, Inc.
Obesity, Vitamin D Deficiency
Vitamin D Supplementation in Psychiatric Illnesses
Children and adolescents with psychiatric illnesses who are treated with medications called second generation antipsychotic agents (SGA) often gain excessive weight during their treatment with these medications.
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia
- Trial name
- VDSS (NCT01004354)
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- University of Massachusetts, Worcester
Nephrolithiasis, Urolithiasis
Vitamin D Repletion in Stone Formers With Hypercalciuria
Vitamin D plays a critical role in maintaining bone health, as well as preventing cardiovascular disease, cancer, and various autoimmune diseases, such as diabetes.
- Conditions
- Nephrolithiasis, Urolithiasis, Idiopathic Hypercalciuria, Vitamin D Deficiency
- Trial name
- NCT01295879
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- New York Presbyterian Hospital
HIV Infections
Vitamin D Supplementation in HIV Youth
The purpose of this study is to determine the correct dose of Vitamin D to give to prevent HIV related complications.
- Trial name
- NCT01523496
- Testing
- Vitamin D control dose, Vitamin D supplementation-
- Where
- 2 sites in United States
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- University Hospitals Cleveland Medical Center
Hypophosphatasia
Post-approval Clinical Study of Asfotase Alfa Treatment for Patients With Hypophosphatasia (HPP) in Japan
This is a multicenter study in Japan. Eleven sites which have already participated in the investigator-initiated clinical study (Early Access Program) will participate in this study.The objective of this study is to gain further…
- Trial name
- NCT02531867
- Testing
- Asfotase Alfa
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Short Bowel Syndrome
Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp
This is a randomized, controlled, unblinded pilot study for patients with vitamin D deficiency in Intestinal Rehabilitation clinic.
- Trial name
- NCT01930539
- Testing
- Ultraviolet B lamp
- Where
- United States
- Volunteers
- 11 people
- Sponsor
- University of Nebraska