Clinical trials: Ascorbic Acid
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.
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
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
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
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
Colonoscopy [E01.370.372.250.250.200]
Comparison of Low-volume PEG Plus Ascorbic Acid Versus Standard PEG Solution as Bowel Cleansing for Colonoscopy
The purpose of this study is to compare two regimens of low volume (2L) polyethylene glycol(PEG)plus ascorbic acid versus standard volume (4L) PEG alone for bowel preparation in out-patients
- Trial name
- NCT01740518
- Testing
- polyethylene glycol, ascorbic acid
- Where
- South Korea
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Dong Il Park, M.D, Ph.D.
Higher Uric Acid Concentrations (>5,5 mg/dl), Healthy
Influence of Hesperidin and Vitamin C on Uric Acid Concentration
Aim of the study is to investigate the impact of hesperidin and/or vitamin C on elevated uric acid concentrations.
- Trial name
- HesperiDrinC (NCT04316390)
- Testing
- Control, Hesperidin, Vitamin C
- Where
- Germany
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Kiel
Melasma
Comparison Between Efficacy of Topical Tranexamic Acid Vs Topical Ethyl Ascorbic Acid In Treatment Of Melasma
This study is to compare the efficacy of topical tranexamic acid vs topical ethyl ascorbic acid in the treatment of melasma
- Trial name
- NCT07522788
- Testing
- Ethyl ascorbic acid topical application, Tranxemic acid topical application
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- Hayatabad Medical Complex
Spinal Cord Injury
Iron & Vitamin C Study
Iron overload is a life-threatening condition that can lead to liver disease, cardiac disease, diabetes and arthritis. Simultaneous supplementation with both iron and AA may place individuals with SCI at risk for iron overload as…
- Trial name
- NCT00881803
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Delayed Onset Muscle Soreness, DOMS
COMBOPROFEN for Treatment of Muscular Pain Associated With Delayed Onset Muscle Soreness (DOMS)
The study is designed as a proof of concept, single-center, randomized, double-blind, placebo controlled study to assess the safety and efficacy of Comboprofen (Ibuprofen + Magnesium + Vitamin C) compared to placebo, Ibuprofen…
- Trial name
- NCT03223519
- Testing
- Comboprofen, Ibuprofen, Magnesium
- Where
- Spain
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- Spherium Biomed