Clinical trials: Ascorbic Acid
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
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
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
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
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.
Obese, Disorder of Vitamin C
The Effect of Vitamin C on Growth Hormone Secretion
Obesity is associated with reduced growth hormone (GH) secretion. GH secretion is regulated by nutritional stimuli including fasting, insulin, glucose and free fatty acids.
- Conditions
- Obese, Disorder of Vitamin C, Growth Hormone Secretion Abnormality
- Trial name
- NCT01537094
- Testing
- Vitamin C 250 mg once daily, Vitamin C 1,000 mg once daily
- Where
- United States
- Sponsor
- Massachusetts General Hospital
Effect of Food Supplement
Effects of Vitamin C Enriched Hydrolyzed Collagen, PrimaColl™, Whey Protein, or Placebo on Collagen Synthesis
The purpose of this study is to determine the effects of repeated dosing vitamin C enriched hydrolyzed collagen (HC) over a 24hr period, compared to PrimaColl™ (PC), whey protein (WP) and placebo (PL), with prescribed exercise on…
- Trial name
- NCT05427279
- Testing
- Hydrolized Collagen, PrimaColl, Whey protein
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Myelodysplastic Syndromes, Chronic Myelomonocytic Leukemia-1
Epigenetics, Vitamin C, and Abnormal Blood Cell Formation - Vitamin C in Patients With Low-Risk Myeloid Malignancies
The primary purpose of this multi-centre, randomized, placebo-controlled, double-blind phase II study is to investigate if oral vitamin C may change the biology of low-risk myeloid malignancies; i.e., clonal cytopenia of…
- Conditions
- Myelodysplastic Syndromes, Chronic Myelomonocytic Leukemia-1, Cytopenia
- Trial name
- EVITA (NCT03682029)
- Testing
- Vitamin C (ascorbic acid)
- Where
- 5 sites in United States, Denmark
- Volunteers
- 109 people
- Sponsor
- Copenhagen University Hospital, Rigshospitalet
Endothelial Cell Loss, Corneal, Cataract and Intraocular Lens (IOL) Surgery
Effect of Vitamin C Supplementation in Corneal Endothelial Damage in Phacoemulsification of Patients with Hard Cataracts
The goal of this clinical trial is to analyze the protective effects of oral ascorbic acid on the corneal endothelial layer undergoing oxidative stress due to phacoemulsification in patients with hard cataracts.
- Trial name
- NCT06781970
- Testing
- Oral Vitamin C
- Where
- 2 sites in Indonesia
- Volunteers
- 120 people
- Sponsor
- Universitas Indonesia
Disorder of Vitamin C, Atrial Fibrillation
High Dose Vitamin C in Cardiac Surgery Patients
Coronary artery bypass grafting (CABG) is the most common procedure performed by cardiac surgeons. Post-operative atrial fibrillation (AF) is the most common adverse event following CABG, experienced in 20-50% of patients; the…
- Conditions
- Disorder of Vitamin C, Atrial Fibrillation, Complications Due to Coronary Artery Bypass Graft, Heart Valve Disease
- Trial name
- NCT02762331
- Testing
- Ascorbic Acid
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- Virginia Commonwealth University
Burn
Comparing the Use of Vitamin c (Ascorbic Acid) in Eye Burn in Subconjunctival Injection to Topical or Oral Treatment.
Eye burns may cause a severe permanent damage. One kind of treatment is the use of vitamin C (Ascorbic acid). This study will compare between subconjunctival topical and/or systemic route of administration and topical and/or…
- Trial name
- NCT00734695
- Testing
- vitamin c
- Where
- 2 sites in Israel
- Volunteers
- 20 people
- Sponsor
- The Baruch Padeh Medical Center, Poriya
Septic Shock
Vitamin C Deficiency in Septic Shock
Objectives: investigators aim to study the effect of addition of vitamin C as a part of treatment in septic shock patients on: Hemodynamics, Inflammation status and ICU outcome.
- Trial name
- NCT06224881
- Testing
- Ascorbic acid
- Where
- Egypt
- Volunteers
- 150 people
- Sponsor
- Cairo University
Adverse Effects, Ascorbic Acid
Systemic Adverse Effects After Osteopathic Treatment and Vitamin C
The goal of this triple-blind randomized clinical trial is to learn about systemic adverse effects in first visit patients who attend an osteopathic medicine center in Barcelona.
- Conditions
- Adverse Effects, Ascorbic Acid, Oxidative Stress
- Trial name
- NCT06102577
- Testing
- 1gr. Vitamine C, control group
- Where
- Spain
- Volunteers
- 99 people
- Sponsor
- Centre Medicina Esportiva i Osteopatia, Spain
Glucocorticoids Deficiency
Ascorbic Acid Treatment in Congenital Glucocorticoids and Mineralocorticoids Deficiency Due to NNT Mutation
Nicotinamide nucleotide transhydrogenase (NNT) mutations cause glucocorticoid and mineralocorticoid deficiencies through decreased detoxification of reactive oxygen species (ROS) in adrenocortical cells.
- Trial name
- NCT02838472
- Testing
- Ascorbic Acid
- Where
- Israel
- Volunteers
- 3 people
- Sponsor
- Hadassah Medical Organization
Ascorbic Acid, Postoperative Pain
The Impact of Intravenous Vitamin C Combined With Nerve Blocks on Postoperative Pain and Recovery After Total Knee Arthroplasty
The aim of this prospective randomized-control study was to evaluate the impact of a single high-dose intravenous vitamin C added to ultrasound-guided blocks at induction on postoperative pain, sngception and early functional…
- Trial name
- NCT05514197
- Testing
- Ascorbic acid 100mg/kg, Maximus 10g, Control Rx
- Where
- Taiwan
- Volunteers
- 73 people
- Sponsor
- Chimei Medical Center
Melasma
1064-nm Q-switched Nd:YAG Laser and Intradermal Tranexamic Acid for Melasma
BACKGROUND: Melasma is a chronic, often relapsing skin disorder, with poor long-term results from all current therapies.Q switched 1064nm Nd:YAG laser and intradermal tranexamic acid both showed efficacy on the treatment of…
- Trial name
- NCT03008655
- Testing
- intradermal tranexamic acid, Nd-YAG
- Volunteers
- 20 people
- Sponsor
- Taipei Medical University WanFang Hospital
Septic Shock
Vitamin C, Thiamine and Hydrocortisone for the Treatment of Septic Shock
The purpose of this study is to determine whether the combination therapy (vitamin C,thiamine and hydrocortisone) is effective in the treatment of septic shock.
- Trial name
- NCT03872011
- Testing
- Vitamin C,thiamine,hydrocortisone
- Where
- China
- Volunteers
- 408 people
- Sponsor
- Northern Jiangsu People's Hospital