Clinical trials: Vitamin C
Chronic Hepatitis C
Long Term Vitamin D Therapy in HCV Treated Patients
Treatment of hepatitis C virus (HCV) infection was carried out using pegylated interferon (PEG-IFN), ribavirin (RBV) and vitamin D (vit D) for 48 weeks in HCV genotypes 4a subjects.
- Trial name
- VD-HCV (NCT01997203)
- Testing
- Vitamin D
- Where
- 2 sites in Egypt
- Volunteers
- 100 people
- Sponsor
- Dr. Nadia AbdelAaty AbdelKader
Post COVID-19 Patients
Hyperbaric on Pulmonary Functions in Post Covid -19 Patients.
Purpose of the study is to investigate the effect of hyperbaric oxygen on FVC, FEV1 and on oxygen saturation in post-COVID-19 patients, The effect of breathing exercises in form of diaphragmatic breathing exercise and pursed lip…
- Trial name
- NCT05977166
- Testing
- hyperbaric oxygen therapy, breathing exercise, medical treatment
- Where
- Egypt
- Volunteers
- 72 people
- Sponsor
- Cairo University
Colorectal Neoplasms, Colorectal Adenoma
A Novel Oral Synbiotic Formula in Reducing Advanced Adenoma Recurrence and Colorectal Neoplasia-related Bacterial Gene Markers
This multicenter, double blinded randomized controlled trial aims to assess the efficacy of a novel oral synbiotic formula (SMT04) in reducing advanced adenoma recurrence and colorectal neoplasia-related bacterial gene markers…
- Conditions
- Colorectal Neoplasms, Colorectal Adenoma, Colorectal Cancer, Advanced Adenoma
- Trial name
- NCT05592886
- Testing
- SMT04 formula
- Where
- 2 sites in China, Hong Kong
- Volunteers
- 649 people
- Sponsor
- Chinese University of Hong Kong
Birth Weight
Healthy Mums, Healthy Babies: Multiple Micronutrient Supplementation in Ethiopia
Background: This programme effectiveness study responds to the need for evidence on the effect on birthweight of switching from iron-folic acid supplementation (IFA) to multiple micronutrient supplementation (MMS) as part of…
- Trial name
- NCT05708183
- Testing
- Multiple micronutrient supplementation (MMS), Iron folate supplementation (IFA)
- Where
- 6 sites in Ethiopia
- Volunteers
- 25,620 people, healthy volunteers welcome
- Sponsor
- London School of Hygiene and Tropical Medicine
Covid19
Vitamin D, Omega-3, and Combination Vitamins B, C and Zinc Supplementation for the Treatment and Prevention of COVID-19
The NUTROVID Factorial Trials The purpose of the NUTROVID-Prevent and NUTROVID-Treat Factorial Trials is to determine whether Vitamin B Complex, Vitamin C, and Zinc; Vitamin D; and Omega3, taken at dosages approximating…
- Trial name
- NUTROVID (NCT04828538)
- Testing
- Vitamin D, Omega DHA / EPA, Vitamin C, Vitamin B complex and Zinc Acetate
- Where
- Mexico
- Volunteers
- healthy volunteers welcome
- Sponsor
- Hospital de la Soledad
Head and Neck Cancer
Pre- and Postoperative Nutrition in Head and Neck Cancer Patients
The purpose of the project is to investigate the effect of wound healing of a combined pre- and postoperative oral supplement, consisting of zinc, vitamin C, arginine and multivitamin, as a supplement for adequate nutrition in…
- Trial name
- NCT03531190
- Testing
- Nutritional supplement (Protein + MIX), Nutritional supplement (Protein)
- Where
- Denmark
- Volunteers
- 42 people
- Sponsor
- University of Copenhagen
Chronic Obstructive Pulmonary Disease (COPD)
Long Term Nitric Oxide Bioavailability on Vascular Health in Chronic Obstructive Pulmonary Disease
Chronic obstructive pulmonary disease (COPD) affects up to 14 million people and is among the top five leading causes of death worldwide.
- Trial name
- COPD-LT (NCT02774226)
- Testing
- Tetrahydrobiopterin (BH4), Antioxidant Cocktail
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Augusta University
Genitourinary Syndrome of Menopause (GSM), Breast Cancer
Efficacy of Non-ablative Radiofrequency Combined With Pelvic Floor Muscle Training for Genitourinary Syndrome of Menopause in Breast Cancer Survivors (RF-SGM)
The goal of this clinical trial is to find out whether non-ablative radiofrequency (RF) applied together with pelvic-floor muscle exercises can ease vaginal dryness and other symptoms of genitourinary syndrome of menopause (GSM)…
- Trial name
- NCT07034976
- Testing
- Active Radiofrequency (Capenergy C500 UpGradeC200)
- Where
- Spain
- Volunteers
- 50 people
- Sponsor
- Fundacion para la Investigacion Biomedica del Hospital Universitario Ramon y Cajal
Hyperpigmentation, Dark Spots
A 16-week Clinical Study Investigating a Dark Spot Corrector Serum in Women With Moderate Discrete Hyperpigmentation
This was a single-center, double-blinded, randomized, controlled cosmetic clinical trial to investigate the efficacy and tolerance of dark spot corrector serum and regimen skincare products when used over the course of 16 weeks…
- Trial name
- NCT07468175
- Testing
- Cosmetic dark spot corrector serum
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Revision Skincare
Hyperemesis Gravidarum, Nausea Gravidarum
Chewing Gum Containing Vitamin-c to Treat Emesis Gravidarum
Nausea and vomiting is a common complication of pregnancy and occurs in 70-80% of all pregnancies. The symptoms usually start 2-4 weeks after fertilization and peak between the 9th and 16th week of gestation.
- Conditions
- Hyperemesis Gravidarum, Nausea Gravidarum, Vitamin C Deficiency
- Trial name
- NCT04284696
- Testing
- Pregnan-C-Gum(R) chewing gum
- Where
- Austria
- Volunteers
- 126 people
- Sponsor
- Medical University of Vienna
Spinal Cord Injuries, Cardiovascular Diseases
Role of Endothelial Function in SCI CVD Risk
Individuals with spinal cord injury have heart attacks and strokes more frequently, and much earlier in life. People with spinal cord injuries develop plaque in vessels much faster, and the reasons why are unclear.
- Conditions
- Spinal Cord Injuries, Cardiovascular Diseases, Endothelial Dysfunction
- Trial name
- NCT06443151
- Testing
- Brachial intra-arterial infusion of vasoactive and antioxidant drugs (acetylcholine, nitroprusside, ascorbic acid), venous occlusion plethysmography, Acetylcholine
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Craig Hospital
COVID-19
Effect of Natural Food on Gut Microbiome and Phospholipid Spectrum of Immune Cells in COVID-19 Patients
The efficacy of natural foods such as freeze-dried mare's milk (Saumal) in post-COVID syndrome therapy has not been studied. The literature review has shown that researchers have focused more on evidence-based medications and…
- Trial name
- NCT05970861
- Testing
- Freeze-dried Mare Milk (Saumal)
- Where
- Kazakhstan
- Volunteers
- 75 people
- Sponsor
- Asfendiyarov Kazakh National Medical University
Septic Shock, Sepsis
Vitamin C and Septic Shock
This is a randomized, double-blind, placebo-controlled clinical trial to compare Vitamin C versus placebo for patients presenting to the ICU with a diagnosis of septic shock.
- Trial name
- NCT03338569
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 125 people
- Sponsor
- University of Minnesota
Colorectal Cancer
Pharmacodynamic Evaluation of Stool Output Following Oral Administration of Various Low Volume PEG3350-based Gut Cleansing Solutions Using the Split Dose Intake in Healthy Subjects
This study is to investigate the effect of various modified low volume polyethylene glycol (PEG) 3350 and ascorbic acid/ascorbate (PEG+ASC)-based gut cleansing solutions on stool output in healthy subjects.
- Trial name
- OUT (NCT01834742)
- Testing
- NER1006, Moviprep
- Where
- 2 sites in Romania
- Volunteers
- 161 people, healthy volunteers welcome
- Sponsor
- Norgine
Chronic Myeloproliferative Disorders, Leukemia
Arsenic Trioxide, Ascorbic Acid, Dexamethasone, and Thalidomide in Myelofibrosis/Myeloproliferative Disorder
RATIONALE: Drugs used in chemotherapy, such as arsenic trioxide and dexamethasone, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing.
- Conditions
- Chronic Myeloproliferative Disorders, Leukemia, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Diseases
- Trial name
- NCT00274820
- Testing
- ascorbic acid, arsenic trioxide, dexamethasone
- Where
- 2 sites in United States
- Volunteers
- 15 people
- Sponsor
- Case Comprehensive Cancer Center
Urinary Tract Infection, Spinal Cord Injury
Vitamin C for Prevention of Urinary Tract Infections in the Spinal Cord Injured
After spinal cord injury, patients have frequent urinary tract infections (UVI). Vitamin C is usually prescribed to prevent such infection, but the efficacy of the treatment is poorly documented.
- Trial name
- NCT00869427
- Testing
- vitamin C
- Volunteers
- 40 people
- Sponsor
- Sunnaas Rehabilitation Hospital
Anemia
Assessment of the Effect of Vitamin C on Anemia in Patients With Continuous Ambulatory Peritoneal Dialysis
Among patients with chronic kidney disease (CKD), there is association between anemia and increased chance of mortality mainly because of cardiovascular diseases and stroke, risk of hospitalization, and death prevalence in…
- Trial name
- NCT02780505
- Testing
- vitamin c
- Volunteers
- 66 people
- Sponsor
- Shiraz University of Medical Sciences
Chronic Hepatitis c
Vitamin D as an add-on Therapy With Pegylated Interferon and Ribavirin for Chronic Hepatitis c
Chronic hepatitis C is endemic in Egypt with a high prevalence of the resistant genotype 4. Conventional standard of care treatment has modest response with only 50% sustained virologic response.
- Trial name
- NCT01655966
- Testing
- vitamin D +pegylated interferon + ribavirin, pegylated interferon + ribavirin
- Where
- Egypt
- Volunteers
- 80 people
- Sponsor
- Cairo University
Lipid Metabolism Disorders
Plasma Lipids-Dependent Vitamin E Metabolism During Dynamic Hyperlipidemia
Background: Obesity is known to lead to diseases such as diabetes and high cholesterol (or fats) in the blood (hyperlipidemia). But no one knows why.
- Trial name
- NCT07715890
- Testing
- High fat liquid shake
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Dietary Exposure
Bioequivalence Study on Vitamin C in Healthy Adults
The objective of this exploratory pharmacokinetic research study is to demonstrate that both caplets and gummies provide an effective dose of ascorbic acid in healthy adults.
- Trial name
- NCT03562988
- Testing
- Vitamin C gummy, Vitamin C tablet
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Church & Dwight Company, Inc.
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