Clinical trials: Ascorbic Acid
Restless Legs Syndrome, End Stage Renal Disease
The Effect of Vitamin C and E Therapy on Restless Leg Syndrome in Patients With End Stage Renal Disease on Haemodialysis
This study aims to measure the effectiveness of vitamins C and E on relieving RLS symptoms in end stage renal disease patients on HD
- Trial name
- NCT05350124
- Testing
- Ascorbic acid, Tocopherol
- Volunteers
- 160 people
- Sponsor
- King Abdulaziz University
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
Colonoscopy Preparation
Colon Cleansing Quality of Polyethylene Glycol Compared With Polyethylene Glycol Plus Ascorbic Acid.
The purpose of the study is to assess whether a low volume polyethylene glycol (PEG) plus ascorbic acid based bowel preparation for colonoscopy is not inferior to a large volume polyethylene glycol preparation in subjects with…
- Trial name
- REPREP1 (NCT02073552)
- Testing
- Polyethylene glycol 4000, Macrogol 3350 plus ascorbic acid
- Where
- Spain
- Volunteers
- 472 people
- Sponsor
- Fundación Canaria Rafael Clavijo para la Investigación Biomédica
Atrial Fibrillation
Vitamin C for Prophylaxis of Post-operative Atrial Fibrillation in On-pump Cardiac Surgery Procedures
The purpose of this study is to determine whether vitamin C is effective in the prophylaxis of post-operative atrial fibrillation in on-pump cardiac surgery
- Trial name
- NCT01107730
- Testing
- Vitamin C, L-Carnitine
- Where
- Greece
- Volunteers
- 33 people
- Sponsor
- Attikon Hospital
Myeloma
Velcade, Trisenox, Vitamin C and Melphalan for Myeloma Patients
Primary Objectives: 1. To evaluate the toxicity and safety of a combination of bortezomib with arsenic trioxide, ascorbic acid and high-dose melphalan in patients with multiple myeloma 2.
- Trial name
- NCT00469209
- Testing
- Trisenox (Arsenic Trioxide), Velcade (Bortezomib), Melphalan
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- M.D. Anderson Cancer Center
Acute Myeloid Leukemia, Myelodysplastic Syndrome
L-Ascorbic Acid Depletion to Treat Acute Myeloid Leukemia and Myelodysplastic Syndromes
To document therapeutic gain achieved by cyclic application of L-ascorbic acid (LAA) supplementation and depletion, while confirming safety and avoidance of clinically significant scurvy, in chemorefractory patients with acute…
- Trial name
- NCT00329498
- Testing
- L-Ascorbic Acid
- Where
- South Korea
- Volunteers
- 25 people
- Sponsor
- Samsung Medical Center
Premature Ovarian Insufficiency, Ovarian Reserve Function
Therapeutic Effect of Vitamin C Supplementation in Patients With Ovarian Aging
The goal of this clinical trial is to learn if Vitamin C works to improve ovarian reserve in women with ovarian aging. It will also learn about the safety of Vitamin C.
- Trial name
- NCT06794060
- Testing
- Vitamin C (Ascorbic Acid)
- Volunteers
- 354 people
- Sponsor
- Peking University Third Hospital
Palatally Impacted Canines
Efficacy of Injectable Vitamin C on Accelerating Canine Movement: A Clinical Study
efficacy of the injectable vitamin C to reduce the time of canine traction
- Trial name
- mesotherapy (NCT03260829)
- Testing
- vitamin C
- Where
- Egypt
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Cairo University
Postural Tachycardia Syndrome
Local Vasoconstriction in Postural Tachycardia Syndrome
The investigators study will determine how often blood flow regulation abnormalities and abnormalities of sympathetic regulation produced by nitric oxide, angiotensin-II, and oxidative stress occur in POTS and the mechanism(s) of…
- Trial name
- NCT01210430
- Testing
- Losartan, Ascorbic Acid (Vitamin C), Normal Saline
- Where
- United States
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Symptomatic Irreversible Pulpitis (SIP)
Regenerative Potentials of Mature Mandibular Molars With Symptomatic Irreversible Pulpitis Enhanced With Different Scaffolds
The current study aims to assess the influence of different scaffolds on postoperative pain and success rate of pulpotomy in mandibular mature molars with symptomatic irreversible pulpitis
- Trial name
- NCT07196683
- Testing
- Regenerative pulpotomy
- Where
- Egypt
- Volunteers
- 36 people
- Sponsor
- Cairo University
Respiratory Tract Diseases, Influenza (Pandemic)
Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia
REMAP-CAP is a randomised, embedded, multifactorial, adaptive platform trial for community-acquired pneumonia. The purpose of this study is to evaluate the effect of a range of interventions to improve outcome of hospitalised…
- Conditions
- Respiratory Tract Diseases, Influenza (Pandemic), Influenza, Community Acquired Pneumonia
- Trial name
- REMAP-CAP (NCT02735707)
- Testing
- Ceftriaxone + Macrolide, Moxifloxacin or Levofloxacin, Piperacillin-tazobactam + Macrolide
- Where
- 408 sites in United States, Australia and 27 more
- Volunteers
- 20,000 people
- Sponsor
- UMC Utrecht
Hospitalized Patients With Covid-19 Pneumonia
Use of Ascorbic Acid in Patients With COVID 19
Different studies showed that ascorbic acid (vitaminC) positively affects the development and maturation of T-lymphocytes, in particular NK (natural Killer) cells involved in the immune response to viral agents.
- Trial name
- NCT04323514
- Testing
- Vitamin C
- Where
- Italy
- Volunteers
- 500 people
- Sponsor
- University of Palermo
HIV Infections
A Study to See if Certain Antioxidants and Vitamins Will Keep Lactate Levels Down in Patients Taking Anti-HIV Drugs
The purpose of this study is to see if certain vitamins (C, E, B1, and B2) can keep lactate levels from becoming too high in patients who are taking nucleoside reverse transcriptase inhibitor (NRTI) anti-HIV drugs.
- Trial name
- NCT00037063
- Testing
- Thiamine hydrochloride, Riboflavin, Ascorbic acid
- Where
- 4 sites in United States
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Common Cold, Gastroenteritis
Echinacea, Propolis and Vitamin C for URI Prevention in Preschoolers
We hypothesize the herbal preparation will enhance the preschoolers' immune response and when taken prophylactically for 12 weeks will decrease episodes of upper respiratory infections and gastroenteritis in the active versus the…
- Trial name
- NCT00231218
- Testing
- dietary supplement--echinacea, propolis, and vitamin c
- Where
- United States
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Asthma, Wheezing
Vitamin C Supplementation to Pregnant Smokers: Follow-up of 2 Randomized Trials Plus Changes in DNA Methylation
In a randomized clinical trial (RCT) published in JAMA, the investigators have provided evidence that vitamin C supplementation (500 mg daily during pregnancy) ameliorates the effects of maternal smoking during pregnancy on…
- Conditions
- Asthma, Wheezing, In Utero Nicotine, Pulmonary Function
- Trial name
- VCSIP-ECHO (NCT03206710)
- Testing
- No current intervention
- Where
- 2 sites in United States
- Volunteers
- 395 people
- Sponsor
- Oregon Health and Science University
Preeclampsia
Antioxidant Supplementation in Pregnant Women With Low Antioxidant Status
The purpose of this study is to investigate antioxidants supplementation in pregnant women with low antioxidant status at 10-12 weeks gestation age in relation to adverse pregnancy outcome in randomized prospective study.
- Trial name
- NCT00388856
- Testing
- Vitamin C 1000mg and E 400IU
- Where
- Indonesia
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Showa University
Burns, Ascorbic Acid Deficiency
Low Dose Vitamin C in Burns >20% Compared to Previous Studies With High Dose Vitamin C
Burn injury is marked by a large release of inflammatory mediators which disrupt the normal capillary barrier and cause a rapid shift of intravascular fluid into interstitial spaces, ultimately leading to shock and death.
- Conditions
- Burns, Ascorbic Acid Deficiency, Burn Shock, Burn Degree Second
- Trial name
- NCT05612867
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 54 people
- Sponsor
- Arrowhead Regional Medical Center
Patellar Tendinopathy
Effect of Collagen/Vitamin C in Jumper's Knee; a RCT
Patellar tendinopathy (PT) is a tendon overuse injury with high prevalence rates in elite and recreational athletes. PT sometimes results in a prolonged absence from sport participation, hampering individuals to achieve their…
- Trial name
- Jumpfood (NCT05407194)
- Testing
- Collagen + vitamin C
- Where
- Netherlands
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Gelderse Vallei Hospital
Respiratory Tract Infection Viral
Echinacea Junior vs Vitamin C in Children 4-12 Years Old
Aim of this study is to investigate efficacy and safety of Echinaforce Junior Tablets (250mg) in comparison with Vitamin C tablets in the prevention of acute viral respiratory tract infections.
- Trial name
- NCT02971384
- Testing
- Echinaforce
- Where
- Switzerland
- Volunteers
- 203 people, healthy volunteers welcome
- Sponsor
- A. Vogel AG
Hyperoxaluria
Validation Testing for Plasma Oxalate Levels in the Biochemical Laboratory at the Galilee Medical Center, in Collaboration With the Biochemistry Laboratory at CHARITE Hospital in Berlin, and Testing the Relationship Between Oxalate Levels and Vitamin C Levels in Plasma
Background: Elevated plasma oxalate levels in various conditions, including: primary hyperoxaluria due to increased production in the liver, renal failure due to decreased renal excretion, intestinal diseases with fatty diarrhea…
- Trial name
- NCT06578754
- Testing
- This is an non-interventional study
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Western Galilee Hospital-Nahariya