Clinical trials: Vitamin C
Chronic Fatigue
High-dose Ascorbic Acid Intravenous Injection Decreases Mitochondrial DNA Damage in Chronic Fatigue Patients: Randomized-controlled Study
Reactive Oxygen Species (ROS) can cause oxidative damage, resulting in oxidation of lipids, proteins and DNA. In fatigue patients, there are some evidences of oxidative damage to DNA.
- Trial name
- NCT01926132
- Testing
- ascorbic acid 10g/20ml, Normal Saline 150ml
- Where
- South Korea
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Yonsei University
Viral Upper Respiratory Tract Infection, Gastroenteritis
Probiotic Supplementation and Endurance Performance in Cyclists and Masters Runners
The study will evaluate the change in gastrointestinal (GI) flora following probiotic supplementation, and expected to lead to an increase in the intestinal epithelial integrity and to improvement in its health.
- Trial name
- NCT02756221
- Testing
- Probiotics
- Where
- Israel
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Tel Hai College
Macular Degeneration, Cataract
Age-Related Eye Disease Study (AREDS)
To assess the clinical course, prognosis, and risk factors of age-related macular degeneration (AMD) and cataract. To evaluate, in randomized clinical trials, the effects of pharmacologic doses of (1) antioxidants and zinc on the…
- Conditions
- Macular Degeneration, Cataract, Lens Opacities
- Trial name
- NCT00000145
- Testing
- Antioxidants, Zinc, Antioxidants and zinc
- Volunteers
- 4,757 people
- Sponsor
- National Eye Institute (NEI)
HIV Infections
A Trial of Vitamins and HAART in HIV Disease Progression
This study is a double-blind randomized clinical trial, conducted to examine the effects of multivitamins (including B, C, and E) on HIV disease progression among HIV-positive Tanzanian adult men and women taking highly active…
- Trial name
- NCT00383669
- Testing
- Multivitamins (including B, C and E), Multivitamins B, C and E
- Where
- Tanzania
- Volunteers
- 4,012 people
- Sponsor
- Harvard School of Public Health (HSPH)
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
Chronic Hypoparathyroidism
Cardiovascular Effects of Parathyroid Hormone Analogues in Chronic Hypoparathyroidism
The goal of this study is to evaluate cardiovascular effects of long-acting parathyroid hormone (PTH) analogues in adults with chronic hypoparathyroidism.
- Trial name
- PaTH CV (NCT07707479)
- Testing
- Arterial stiffness in the aorta by measurement of pulse wave velocity, Central blood pressures and reflected waves in the aorta, Carotid and femoral intima-media thickness (IMT) and number of carotid or femoral plaques
- Where
- 2 sites in Greece
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- National and Kapodistrian University of Athens
Wrinkle, Skin Pigmentation
Prospective Study of Topical Vitamin C (THDA) Versus Topical Vitamin C (THDA) With Acetyl Zingerone
The purpose of this study is to asses the impact of topically applying a form of vitamin C known as tetrahexyldecyl Ascorbate (THDA) along with a novel anti-aging ingredient, acetyl zingerone, compared against applying THDA alone.
- Trial name
- NCT05779280
- Testing
- THDA + Acetyl Zingerone Topical Product, THDA
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Integrative Skin Science and Research
Colon Cancer Stage Iv
The Effectiveness of High-dose Intravenous Vitamin c With Very Low Carbohydrate Diet for Terminal Colon Cancer Patients
The purpose is to evaluate the effectiveness of high dose intravenous vitamin C (IVC) therapy plus very low carbohydrate diet (VLCD) for stage IV colon cancer (with KRAS and BRAF mutation ) with or without chemotherapy.
- Trial name
- NCT04035096
- Testing
- Ascorbic Acid, Control group
- Where
- Taiwan
- Volunteers
- 40 people
- Sponsor
- National Taiwan University Hospital
Healthy Volunteers Bioequivalence or Bioavailability Study
A Study to Assess the Relative Bioavailability of Process Variants of Selumetinib in Healthy Male Volunteers
A Study to assess, against a reference selumetinib capsule, if the drug levels of a variant of selumetinib capsule are comparable, and to assess how drug levels differed in another variant of Selumetinib in Healthy Male…
- Trial name
- NCT02322749
- Testing
- selumetinib 75mg single dose
- Where
- United Kingdom
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- AstraZeneca
Colonoscopy
Comparison of 2L NRL994 With NaP Preparation in Colon Cleansing Prior to Colonoscopies for Colon Tumor Screening
To compare the efficacy, acceptability and safety of the new 2 liter gut cleansing solution (Moviprep) and NaP preparation in routine colon cleansing prior to tumor screening colonoscopies
- Trial name
- NCT00427089
- Testing
- Macrogol 3350 Na sulphate NaCl KCl Ascorbic Acid Na Ascorbate, Sodium Phosphate solution (NaP)
- Where
- 12 sites in Germany
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Norgine
Gingival Pigmentation
Microneedling With Vitamin C Versus Injectable Vitamin C for Depigmentation in Gingival Melanin Hyperpigmentation
The study is a randomized controlled clinical trial comparing the use of microneedling with vitamin C against injecting vitamin C for depigmentation in physiological gingival melanin hyperpigmentation in a group of patients…
- Trial name
- NCT05786885
- Testing
- Microneedling will be done with application of topical vitamin C paste for depigmentation, Vitamin C injection
- Volunteers
- 22 people
- Sponsor
- Cairo University
Colorectal Cancer, Older Adults (60 - 85 Years Old)
Chemo Brain Prehab Project
Colorectal cancer is 37% higher in the North West than the national average and is treated by chemotherapy, including fluorouracil, capecitabine, and oxaliplatin.
- Conditions
- Colorectal Cancer, Older Adults (60 - 85 Years Old), Physically Inactive, Chemotherapy
- Trial name
- CHEMOBRAIN (NCT07341217)
- Testing
- Exercise Prehabilitation, Multivitamins, Standard Care (in control arm)
- Where
- 4 sites in United Kingdom
- Volunteers
- 86 people
- Sponsor
- Dr. Chris Gaffney
Colorectal Cancer
The Effects of Vitamin B-6 Status on Homocysteine, Oxidative Stress, One-carbon Metabolism and Methylation: Cross-section, Case-control, Intervention and Follow-up Studies in Colorectal Cancer
Vitamin B-6, folate and homocysteine may play a critical role in the colorectal cancer progression. This is a 4-y study and the specific aims are: 1) to compare vitamin B-6, folate and homocysteine status, oxidative stress…
- Trial name
- NCT01426490
- Testing
- Vitamin C, Vitamin B6, Folic acid
- Where
- Taiwan
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Taichung Veterans General Hospital
Infertility, Fertility Disorders
Live Birth Rate After Sperm Selection Using ZyMōt Multi (850µL) Device for Intra Uterine Insemination
This single centre interventional pilot randomized control study intends to compare two methods of sperm preparation for couples referred for Intra Uterine Insemination (IUI) procedure.
- Trial name
- FERTINSEM (NCT06144268)
- Testing
- ZyMōt Multi (850µL), Density Gradient Centrifugation
- Where
- Belgium
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel
ADHD
Experimental fMRI Study of Guanfacine and Lisdexamfetamine in ADHD Adolescents
This is not a clinical trial. The aim of this study is to understand the mechanism of action of two recently licensed drugs for ADHD on brain function.
- Trial name
- AGUALIS (NCT03333668)
- Testing
- Lisdexamfetamine dimesylate, Guanfacine Extended Release Oral Tablet
- Where
- United Kingdom
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- King's College London
Overweight and Obesity, Inflammation
Clinical Trials of Five Different Food Supplements With Restriction Diet in Adults
In recent years, dietary supplement are of great interest for the improvement of human health. This study is designed as a parallel, randomized, double blind study exploring the efficacy of two months daily oral dosing of five…
- Conditions
- Overweight and Obesity, Inflammation, Hypercholesterolemia, Hypertension
- Trial name
- FOODSU (NCT05333315)
- Testing
- IP1, IP2, IP3
- Where
- Slovenia
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- University of Primorska
Tendinopathy, Insertional Achilles Tendinopathy
Evaluation of Collagen-based Medical Device Treatment Combined With Physiotherapy in Subjects With Achilles Tendinopathy.
Achilles tendinopathy is a condition characterized by inflammation of the Achilles tendon. Achilles tendinopathies are classified into insertional tendinitis and noninsertional tendinitis.
- Conditions
- Tendinopathy, Insertional Achilles Tendinopathy, Achilles Tendinopathy, Peritendinitis
- Trial name
- AKITENMED (NCT05464498)
- Testing
- MD-Tissue Collagen Medical Device, eccentric strengthening protocol
- Where
- Italy
- Volunteers
- 72 people
- Sponsor
- Guna S.p.a
Malnutrition
Comparison of the Effect of Two Treatments on the Nutritional and Micronutrient Status of Malnourished Children
The purpose of this study is to measure the impact of a fortified food on the nutritional and micronutrient status of malnourished children, compared with milk.
- Trial name
- NCT01643187
- Testing
- Beverage fortified with 21 vitamins and minerals, Lactose-free milk
- Where
- Guatemala
- Volunteers
- 1,000 people
- Sponsor
- Association for the Study and Prevention of HIV/AIDS
Multiple Myeloma and Plasma Cell Neoplasm
Arsenic Trioxide Plus Vitamin C in Treating Patients With Recurrent or Refractory Multiple Myeloma
RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Vitamin C may increase the effectiveness of arsenic trioxide by making cancer cells more sensitive to the…
- Trial name
- NCT00006021
- Testing
- ascorbic acid, arsenic trioxide
- Where
- 4 sites in United States
- Volunteers
- 22 people
- Sponsor
- University of Miami
Diabetic Neuropathies
Vitamin C Supplementation as a Preventive Treatment of Diabetic Peripheral Neuropathy
The purpose of this pilot study is to determine whether vitamin C supplementation is beneficial in treating and/or preventing diabetic peripheral neuropathy in people with type 2 diabetes.
- Trial name
- NCT00634998
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Washington State University
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