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Vitamin Deficiency Clinical Trials

A listing of Vitamin Deficiency medical research trials actively recruiting patient volunteers. Search for closest city to find more detailed information on a research study in your area.


Found (86) clinical trials

The Effect of SLC19A3 Inhibition on the Pharmacokinetics of Thiamine

Thiamine is an essential vitamin meaning humans must consume thiamine from their diet in order to stay healthy. Low thiamine levels can lead to adverse events. Thiamine is absorbed in the intestine by a transporter protein. This is made by the SLC19A3 gene. The SLC19A3 gene provides instructions for making ...


Resistance to Vitamin D or Parathyroid Hormone

Patients with confirmed or suspected states with resistance to vitamin D or parathyroid hormone (PTH) will be admitted for diagnosis and treatment and for inclusion in other protocols. These states include hypocalcemia, rickets, osteomalacia, pseudohypoparathyroidism. Resistance to a factor is manifested by deficient bioeffect despite high levels of the factor ...

Phase N/A

Vitamin D and Prebiotics for Intestinal Health in Cystic Fibrosis

Cystic fibrosis (CF) is the most common life-shortening genetic condition among Caucasians in the United States. Individuals with CF have an altered gastrointestinal (GI) microbiota, which may be a result of chronic systemic inflammation and infection, frequent use of antibiotics, and/or medically prescribed and habitual high-fat/high-calorie diets. The study will ...


The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis

Patients will be screened for eligibility one month after the onset of PD-related peritonitis, those who meet the inclusion criteria will be enrolled in this study. All consenting participants will be randomized into the vitamin D treatment group or the control group, general information and baseline biochemistry data would be ...


The Impact of Phosphate Metabolism on Healthy Aging

The central hypothesis of this proposal is that patients with X-linked hypophosphatemia (XLH), when matched for duration and dose of phosphate (Pi) therapy to patients with hereditary hypophosphatemic rickets with hypercalciuria (HHRH), will evidence greater cardiovascular and vascular debility than patients with HHRH. The overall objectives of this project are ...

Phase N/A

High Dose Vitamin C Intravenous Infusion in Patients With Resectable or Metastatic Solid Tumor Malignancies

This clinical trial is for men and women with resectable or metastatic solid tumor malignancies. The objective of the study is to investigate whether high dose vitamin C infusion leads to pathological tumor response in resectable colorectal, pancreatic, and lung cancer (cohort A) or objective tumor response in KRAS or ...


A Long-term Study to Describe the Use of PASCORBIN 7.5 g in Patients With Vitamin C Deficiency

The observational study began on 01 November 2012 and is scheduled for a period of 10 years continued (until 01 November 2022). The duration of the observational study for each patient is not fixed corresponding to the character of a non-interventional study. According to the underlying disease, characterized either acute ...

Phase N/A

Urinary Vitamin C Loss in Diabetic Subjects

Several studies have reported that diabetic subjects have lower plasma vitamin C concentrations than non-diabetic subjects. Although urinary vitamin C loss in diabetic subjects was reported to be increased in two studies, these are difficult to interpret due to lack of controlled vitamin C intake, inadequate sampling, lack of control ...

Phase N/A

Thiamine Responsive Disorders (TRD) Among Infants in Lao PDR

The study's primary objective is the development of a case definition for TRD among infants and young children with symptoms consistent with TDD, with the case definition being based on those clinical symptoms and other predictors that we find are better able to distinguish those who respond positively to thiamine ...

Phase N/A

Vitamin D Supplementation to Prevent Vitamin D Deficiency for Children With Epilepsy

children aged 2-16 years diagnosed with idiopathic epilepsy will be randomized to receive either cholecalciferol doses (400IU vs 1000IU) with follow up at 3 and 6 months post supplementation.