Drug or intervention
Vitamin C Clinical Trials
Studies that test Vitamin C, alone, with other treatments or as the comparison.
In numbers
Open to volunteers: recruiting, not yet recruiting or enrolling by invitation. Active adds studies under way that have stopped recruiting.
Open to volunteers
All 185Lipid 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)
Chronic Low Back Pain, Urinary Incontinence
Radiofrequency and Pelvic Floor-Core Exercise for Chronic Low Back Pain in Women With Pelvic Floor Dysfunction
The goal of this clinical trial is to learn whether capacitive-resistive radiofrequency, a supervised core and pelvic floor exercise programme, or both together reduce low back pain in premenopausal women with chronic…
- Conditions
- Chronic Low Back Pain, Urinary Incontinence, Pelvic Floor Disorders
- Trial name
- NCT07906431
- Testing
- Capacitive-resistive radiofrequency, Lumbopelvic-pelvic floor therapeutic exercise
- Where
- Spain
- Volunteers
- 60 people
- Sponsor
- SERGIO MONTERO NAVARRO
Diabetes
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…
- Trial name
- NCT00071526
- Where
- United States
- Volunteers
- 5,000 people, healthy volunteers welcome
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Preeclampsia, Endothelial Function
Antidepressant Therapy for Improved Blood Vessel Health After Preeclampsia
Preeclampsia is a condition in pregnancy where a woman develops high blood pressure and other complications. Women who develop preeclampsia are 4 times more likely to have heart disease later in life.
- Trial name
- NCT07715669
- Testing
- Paroxetine Hydrochloride, Ascorbic acid (Vitamin C)
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Anna Stanhewicz, PhD
Erythema, Telangiectasis
The Effect of 16-week Dietary Intake of Food Supplements Containing Collagen and MSM on Facial Erythema and Other Skin Parameters
The aim of this study is to compare the effects of 16 weeks of daily dietary supplementation with two investigational products containing collagen, methylsulfonylmethane (MSM), and vitamin C on skin parameters in comparison to a…
- Conditions
- Erythema, Telangiectasis, Skin Redness
- Trial name
- TO-COSKIN4 (NCT07345195)
- Testing
- CPMSM-HD, CPMSM-LD
- Where
- Slovenia
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- VIST - Faculty of Applied Sciences
Carrier of Phenylketonuria, Healthy
Impact of Phenylalanine Elevations on Brain and Cognition in Adult PKU Carriers
The goal of this clinical trial is to advance our understanding of the cognitive and neurophysiologic sequelae associated with suboptimal phenylalanine (Phe) metabolism in heterozygous carriers of phenylketonuria (PKU).
- Trial name
- NCT07220265
- Testing
- Phenylalanine (Phe)
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Melasma
COMPARISON OF TOPICAL VITAMIN C VS NIACINAMIDE IN TREATMENT OF MELASMA
Melasma is a common acquired hyperpigmentation disorder that significantly affects quality of life. Various topical agents are used in its treatment, including Vitamin C and Niacinamide, both of which possess depigmenting…
- Trial name
- NCT07890571
- Testing
- Ascorbic acid, niacinamide
- Where
- Pakistan
- Volunteers
- 100 people
- Sponsor
- Pak Emirates Military Hospital
Drug-drug Interaction
A Study to Learn About How Safe BAY3389934 is and How it Affects Blood Clotting When Given Alone or With Aspirin in Healthy Participants
The study treatment BAY3389934 is under development for people with blood clotting problems that occur due to sepsis. Sepsis is a serious condition that happens when the body's reaction to an infection causes organ damage.
- Trial name
- NCT07652723
- Testing
- Aspirin, BAY3389934
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Bayer
Hypovitaminosis D
The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.
Vitamin D is essential for calcium absorption and bone growth, brain development, and immune system function. Vitamin D is produced by the body in response to natural sunlight.
- Trial name
- NCT07876843
- Testing
- Vitamin D3, Calcium, and Vitamin C
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Atlantic Health System
Gingivitis, Healthy Adult
Comparative Evaluation of the Anti-Plaque and Anti-Gingivitis Effects of Nanobiofusion Gingival Gel (NBF), Placebo Gel, and Commercial Toothpaste
The goal of this clinical trial is to learn if Nanibiofusion Gingival Gel (NBF) is able to reduce dental plaque and gum inflammation in adults.
- Trial name
- NCT07850232
- Testing
- Nano Bio-Fusion (NBF) Gingival Gel, Commercial fluoride toothpaste
- Where
- Jordan
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- King Abdullah University Hospital
Completed, with results posted
All 110Healthy, Suboptimal Vitamin C Levels
The Impact of Qualia Vitamin C+ on Blood Vitamin C Levels
This is a double-blind, placebo-controlled, parallel-group, study evaluating the effect of a Qualia Vitamin C+ formulation on Whole Blood Vitamin C levels in the blood of healthy adults aged 25 years or older.
- Trial name
- NCT07285109
- Testing
- Qualia Vitamin C+
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Qualia Life Sciences
Pancreatic Neoplasms, Cancer of Pancreas
A Phase 2 Trial of High-dose Ascorbate for Pancreatic Cancer (PACMAN 2.1)
This clinical trial adds high-dose ascorbate (vitamin C) to the standard of care regimen for metastatic pancreatic adenocarcinoma (a type of pancreatic cancer).
- Conditions
- Pancreatic Neoplasms, Cancer of Pancreas, Cancer of the Pancreas, Neoplasms, Pancreatic
- Trial name
- NCT02905578
- Testing
- Gemcitabine, nab-paclitaxel, Pharmacological ascorbate
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- University of Iowa
Pancreatic Cancer, Pancreas Cancer
Trial of Ascorbic Acid (AA) + Nanoparticle Paclitaxel Protein Bound + Cisplatin + Gemcitabine (AA NABPLAGEM)
The purpose of this study is to see if a treatment regimen with a combination of paclitaxel protein bound (also known as nab-paclitaxel), gemcitabine, and cisplatin when given with high dose Ascorbic Acid will be safe and…
- Conditions
- Pancreatic Cancer, Pancreas Cancer, Pancreatic Adenocarcinoma Resectable, Pancreatic Ductal Adenocarcinoma
- Trial name
- AA NABPLAGEM (NCT03410030)
- Testing
- High Dose Ascorbic Acid 25 g/m^2, Nanoparticle Paclitaxel protein bound 125mg/m^2, Cisplatin 25mg/m^2
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- HonorHealth Research Institute
Nutrient Deficiency, Happiness
Alii Supplement Study
The goal of this clinical trial is to learn if the Alii Supplement can be used to reduce symptoms related to nutritional depletion in hormonal birth control pill users.
- Conditions
- Nutrient Deficiency, Happiness, Digestive Health, Vulnerability to Disease
- Trial name
- NCT07271316
- Testing
- Alii Supplement
- Where
- United States
- Volunteers
- 16 people
- Sponsor
- Texas Christian University
Cerebrovascular Disorders
HYPEROXIA Responses and ROS
30 participants (15 males and 15 females) who are ≥18 - ≤ 40 years old and considered healthy will be enrolled into this study to test the role of reactive oxygen species (ROS) in regulating cerebral blood flow (CBF).
- Trial name
- NCT05958303
- Testing
- Antioxidant Cocktail
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison