Clinical trials: Vitamin C
Diabetes Mellitus, Non-Insulin Dependent, Non-Insulin Dependent
Study of the Effects of Vitamin C on Patients With Type 2 Diabetes
Diabetes is a disease characterized by decreased sensitivity to the action on insulin to promote sugar (glucose) use and blood vessel relaxation (vasodilation) in muscle.
- Trial name
- NCT00001870
- Testing
- Acetylcholine
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- National Center for Complementary and Integrative Health (NCCIH)
The Impact of Vitamin c and Epicatechin Upon Antioxidant Capactity
Cross-over Double-blind Intervention to Investigate the Effects of Defined Antioxidant-containing Drinks on Time Course of Antioxidant Capacity
The aim of this project is to measure the differences in antioxidant capacity at different time points after consuming a single dose of antioxidant-containing drink (vitamin C or epicatechin) compared with a control drink in 10…
- Trial name
- NCT02898571
- Testing
- Vitamin C, epicatechin
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Newcastle University
Vitamin C, Glutathione
Effect of Double Nutri® Liposomal Encapsulation Technology on Human Absorption of Vitamin C and Glutathione Liquid Sachet
The objective of this study is to evaluate whether Double Nutri® liposomal encapsulation technology can enhance the oral absorption of liquid vitamin C and glutathione supplements in humans.
- Trial name
- NCT07302828
- Testing
- Vitamin C and Glutathione without liposome, Liposomal Vitamin C and Glutathione
- Where
- Taiwan
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- TCI Co., Ltd.
Bioavailability of Vitamin C
Comparison of Bioavailability of Liposomal and Traditional Formulation of Vitamin C
The aim of the study was to compare the profiles of vitamin C serum concentration in healthy volunteers after the single oral administration either in a liposomal or traditional formulation.
- Trial name
- NCT05843617
- Testing
- Liposomal Vitamin C, Traditional Vitamin C
- Where
- Poland
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- AronPharma Sp. z o. o.
Pneumonitis, Coronavirus Infection
Proflaxis Using Hydroxychloroquine Plus Vitamins-Zinc During COVID-19 Pandemia
Healthcare professionals mainly doctors, nurses and their first degree relatives (spouse, father, mother, sister, brother, child) who have been started hydroxychloroquine(plaquenil) 200mg single dose repeated every three weeks…
- Trial name
- NCT04326725
- Testing
- Plaquenil 200Mg Tablet
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Istinye University
Vitamin d Deficiency
The Effect of UV-C Enriched Foods on Vitamin D Deficiency
This study is an experimental design study in which demographic characteristics, food consumption, biochemical parameters and anthropometric measurements of individuals with low vitamin D levels before and after consuming…
- Trial name
- NCT06098820
- Testing
- Vitamin D status
- Where
- Turkey (Türkiye)
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Okan University
Inflammation, Oxidative Stress
Antioxidants Combined With Cryotherapy on Inflammatory Response After Resistance Exercise in Untrained Volunteers
Acutely resistance exercise induces inflammatory responses and leukocytosis arising of oxidative stress, that clinically manifested by pain and/or delayed onset muscle soreness (DOMS).
- Conditions
- Inflammation, Oxidative Stress, Pain
- Trial name
- NCT02902315
- Testing
- Cryotherapy, Vitamins C and E, Vitamins C and E associated with cryotherapy
- Where
- Brazil
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Universidade Federal de Santa Maria
Gingival Pigmentation
The Adjunctive Role of Vitamin C on Pigment Recurrence (Randomized Clinical and Histological Trial)
The goal of this clinical trial is to determine the role of vitamin C on recurrence of gingival pigment after patients who are healthy and esthetically concerned with it received surgical removal of this pigment.
- Trial name
- NCT06312605
- Testing
- Injectable applied vitamin C, Topical applied Vitamin C, Surgical depigmentation only
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Noise-Induced Hearing Loss
Micronutrients to Prevent Noise-induced Hearing Loss
Noise-induced hearing loss (NIHL) is a significant clinical, social, and economic issue. Studies in animals have allowed us to identify mechanisms contributing to NIHL, including direct mechanical trauma, free radicals formed in…
- Trial name
- NCT00808470
- Testing
- beta-carotene, vitamins C and E, magnesium
- Where
- United States
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- University of Michigan
Healthy, Pharmacokinetic
A Pharmacokinetic Study of Single Oral Doses of Six Different Vitamin C Product Forms
Vitamin C (ascorbic acid) is an essential nutrient linked to many aspects of basic human physiology. It is a potent antioxidant and involved as a cofactor for many human enzymes, and its extreme deficiency can lead to a fatal…
- Trial name
- NCT06471023
- Testing
- TP1, TP2, TP3
- Where
- Canada
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
Intrabony Periodontal Defect
Evaluation of Modified Minimally Invasive Surgical Technique and Platelet Rich Fibrin With or Without Vitamin Pool A and C for Management of Periodontal Intrabony Defects
This study aims to assess clinical and radiographic outcomes after the use of vitamins A and C with PRF versus PRF alone in the treatment of periodontal intrabony defect.
- Trial name
- NCT05499598
- Testing
- Experimental: Modified minimally invasive surgical technique with PRF and vitamins A and C, Modified minimally invasive surgical technique with PRF
- Where
- Egypt
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Cairo University
Photoaging
The Efficacy and Safety of a Single 70% Glycolic Acid Peel With Vitamin C for the Treatment of Photoaging
Our study involves the evaluation of a high potency peel in its efficacy for skin rejuvenation in the treatment of photoaging. This chemical peel regime is a high potency peel 70% glycolic acid combined with vitamin C that is…
- Trial name
- NCT02126644
- Testing
- 70% glycolic acid
- Where
- Singapore
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- National University Hospital, Singapore
Schizophrenia
Role of Antioxidants (Vitamin C and E) in the Management of Schizophrenia
Background: Antioxidants are substances that are considered as a defensive material which protects cells from destruction. It is evident that use of food stuff rich in antioxidant will fortify one's ability to encounter with…
- Trial name
- NCT04078048
- Testing
- Antioxidants (Vitamin C, E )
- Where
- Pakistan
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Health Sciences Lahore
Bowel Preparation
Effectiveness of Bisacodyl Suppository Agent for Dose Reduction of Low Dose PEG
Proper bowel cleansing before colonoscopy is an important factor to increase the detection rate of lesions. Low volume polyethylene glycol (PEG) plus ascorbic (PEG-Asc) has reduced the dosage of previous bowel preparation agent…
- Trial name
- NCT03849196
- Testing
- 2L PEG-Asc, Bisacodyl 10Mg Suppository, 1L PEG-Asc
- Where
- South Korea
- Volunteers
- 168 people, healthy volunteers welcome
- Sponsor
- Samsung Medical Center
HELICOBACTER PYLORI INFECTIONS, Helicobacter Infection
Vonoprazan vs Proton Pump Inhibitor With Vitamin D or Probiotics Based Triple Therapy for Eradication of Helicobacter Pylori Infection
Helicobacter pylori is a Gram-negative, spiral-shaped bacterium that infects up to 50% of the world's population, residing in the gastric mucosa and using the mucus layer for protection from the stomach's high acidity.
- Conditions
- HELICOBACTER PYLORI INFECTIONS, Helicobacter Infection, Helicobacter Pylori Gastrointestinal Tract Infection, Helicobacter Pylori Infected Patients
- Trial name
- NCT07293910
- Testing
- Vonoparazan, Vitamin D, Probiotic
- Where
- Egypt
- Volunteers
- 132 people, healthy volunteers welcome
- Sponsor
- Tanta University
Pharmacokinetics
A Pharmacokinetics Study of Intravenous Ascorbic Acid
This is a Phase 1, single-dose study to evaluate the pharmacokinetics of intravenous Ascorbic Acid.
- Trial name
- NCT02534753
- Testing
- Ascor L 500® (Ascorbic Acid Injection, USP)
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- McGuff Pharmaceuticals, Inc.
Preeclampsia, Eclampsia
RCT of Antioxidant Therapy to Prevent Preeclampsia in Brazil
The perinatal morbidity and mortality rates for Brazil are five to ten-fold higher than those reported for upper income countries.
- Conditions
- Preeclampsia, Eclampsia, HELLP Syndrome, Pregnancy
- Trial name
- NCT00097110
- Testing
- Vitamin C and E
- Where
- Brazil
- Volunteers
- 734 people, healthy volunteers welcome
- Sponsor
- NICHD Global Network for Women's and Children's Health
Iron Deficiency, Anemia
The Efficacy of a Local Vitamin-C Rich Fruit (Guava) in Improving Iron Absorption From Mungbean Based Meals and Its Effect on Iron Status of Rural Indian Children (6-10 Years)
Iron deficiency is estimated to affect about one fifth of the world's population, and women and children are among the most severely affected.
- Trial name
- MUGUST_2 (NCT01191463)
- Testing
- Mung Bean Meal, Guava
- Where
- India
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Socket Preservation
Evaluation of Dentin Graft and I-PRF With and Without Vitamin C for Post-extraction Socket Preservation
The aim of the study is to evaluate radiographic ridge width change following autogenous demineralized dentin graft (ADDG) and i-PRF addition with and without vitamin C (AA) for post extraction socket preservation.
- Trial name
- NCT06569264
- Testing
- Alveolar ridge preservation using autogenous demineralized dentin graft and i-PRF, Alveolar ridge preservation using vitamin C with dentin graft and i-PRF
- Where
- Egypt
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Cairo University
Thrombosis
Evaluation of Factors II, VII, IX, X, and Proteins C and S, Following High-dose Vitamin K Supplementation
The purpose of this study is to evaluate factor levels of the pro coagulant factors II, VII, IX, X, and the anticoagulant factors protein C and S in healthy volunteers during the intake of elevated levels of vitamin K in order to…
- Trial name
- NCT01143831
- Testing
- Vitamin K, 20mg
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Stephan Moll, MD