Clinical trials: Vitamin C
Gingivitis
Prospective Double-Blind Randomized Controlled Clinical Trial in the Gingivitis Prevention With OPCs
Aim: To evaluate the effectiveness on tissue response of the new nutritional supplement made of Oligomeric Proanthocyanidins (OPCs) in induced gingivitis after 21 days of use.
- Trial name
- NCT02515929
- Testing
- Oligomeric Proanthocyanidins
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Seville
Facioscapulohumeral Muscular Dystrophy
Effects Antioxidants Supplementation on Muscular Function Patients Facioscapulohumeral Dystrophy (FSHD)
On the basis of published data and the investigators' results indicating that oxidative stress may contribute to the peripheral skeletal muscle dysfunction in patients with FSHD, the investigators propose a study to test whether…
- Trial name
- FSHD (NCT01596803)
- Testing
- Taking of blood, needle biopsy of the vastus lateralis muscle, Vit C Vit E Zn Se
- Where
- France
- Volunteers
- 54 people
- Sponsor
- University Hospital, Montpellier
Healthspan Improvement, Aging
Combination Gerotherapeutic Interventions for Healthspan Improvement
This study is a 90-day interventional, randomized, controlled pilot trial exploring multi-modal gerotherapies and their impact on longevity-related outcomes.
- Conditions
- Healthspan Improvement, Aging, Longevity
- Trial name
- NCT07475546
- Testing
- Rapamycin, Naltrexone, Metformin
- Where
- United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- AgelessRx
Thin Endometrium
Thin Endometrium Undergoing Frozen-thawed Embryo Transfer
The endometrium is essential for embryo implantation. The clinical pregnancy rate and live birth rate of patients with thin endometrium are significantly lower than those of normal endometrium.
- Trial name
- NCT04292886
- Testing
- Tamoxifen and femoston, Vitamin C and femoston
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Nanjing University
Vitamin D Deficiency, Inflammatory Bowel Diseases
Vitamin D Status in Inflammatory Bowel Disease
Inflammatory bowel disease (IBD), comprising crohn's disease (CD) and ulcerative colitis (UC), is a a chronic, relapsing-remitting systemic disease.
- Trial name
- vdsinibd (NCT03496246)
- Testing
- serum total 25 hydroxycholecalciferol 25(OH) vitamin D, complete blood count (CBC), serum calcium level
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Assiut University
Glioma, IDH Mutation
All-Trans Retinoic Acid (ATRA) Plus PD-1 Inhibition in Recurrent IDH-Mutant Glioma
This is a Phase II study of the combination of All-Trans Retinonic Acid (ATRA) and PD-1 inhibition (Retifanlimab) in patient with recurrent IDH-mutant glioma.
- Conditions
- Glioma, IDH Mutation, Astrocytoma, Oligodendroglioma
- Trial name
- NCT05345002
- Testing
- Retifanlimab, All-trans retinoic acid
- Where
- United States
- Volunteers
- 55 people
- Sponsor
- Stephen Bagley, MD, MSCE
Covid-19 Infections
Treatment of Covid-19 Infections Using Vitality Therapy or the Bible Cure
The human immune system is enhanced by exposure to infrared radiation with the wavelength of 5 microns to 20 microns. Humans, at normal body temperature, radiate most strongly in the infrared at a wavelength of about 10 microns.
- Trial name
- NCT04584437
- Testing
- Infrared Energy and Dietary Supplement
- Where
- Canada
- Volunteers
- healthy volunteers welcome
- Sponsor
- GAAD Medical Research Institute Inc.
Blood Pressure, Hypertension
Reversing Glucose and Lipid-mediated Vascular Dysfunction
The purpose of our study is to understand the extent to which the blood vessels are affected by glucose and fat (lipids) in lean healthy adults and if these changes in the blood vessels contribute to the development of high blood…
- Trial name
- REGAL (NCT04832009)
- Testing
- Dextrose 20 % in 500 ML Injection, Intralipid, Saline
- Where
- United States
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of Kansas Medical Center
Skeletal Anomalies, Kidney Transplant; Complications
Evaluation and Management of Metabolic Bone Disease in Kidney Transplant Recipients
There is a well-documented increased risk for disordered mineral bone homeostasis in Kidney Transplant Recipients (KTRs) when compared to the general population, leading to a markedly increased risk for fragility fractures and…
- Trial name
- NCT03958409
- Testing
- measurements to evaluate metabolic bone disease, standard care
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Yale University
Osteoarthritis
Hydrolyzed Collagen in the Reduction of Osteoarticular Pain and Functional Limitation
This randomised study evaluates the efficacy of an oral dietary supplement of Hydrolyzed Collagen in reducing pain and improving physical function in subjects with osteoarthritis.
- Trial name
- NCT05149053
- Testing
- Hydrolyzed Collagen
- Where
- Spain
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Francisco Jose Rodriguez Velasco
Bowel Cleansing in Preparation for Colonoscopy
PEG-Electrolyte Solution (FORTRANS®) With Mentholyptus Drops (Halls®) Versus Reduced Volume Ascorbic Acid Supplemented PEG-Electrolyte (MoviPrep®) in Colonoscopy Preparation
The colonoscopy accuracy and safety depend on the quality of colon cleansing. An inadequately prepped bowel will increase the risk of missing a lesion, prolong procedure, increase patient discomfort, and eventually increase…
- Trial name
- NCT01788709
- Testing
- preparation cleaning solution
- Where
- Lebanon
- Volunteers
- 200 people
- Sponsor
- American University of Beirut Medical Center
Occluded Totally Implanted Central Venous Catheter
Determining the Safe Dosage of Ascorbic Acid Used in the Treatment of Occluded Totally Implanted Central Venous Catheter
The hypothesis of the study is to evaluate whether ascorbic acid is able to clear totally implanted central venous catheter
- Trial name
- NCT01270152
- Testing
- Ascorbic Acid
- Where
- Brazil
- Volunteers
- 21 people
- Sponsor
- University of Sao Paulo
Ovarian Cancer, Cervical Cancer
Oral Iron vs. Placebo in Newly Diagnosed Gynecologic Oncology Patients Who Are Surgical Candidates.
The prevalence of anemia in gynecologic oncology new patients has been seen in previous studies to be as high as 35-59%. this population includes women with several types of gynecologic malignancies.
- Conditions
- Ovarian Cancer, Cervical Cancer, Uterine Cancer, Anemia
- Trial name
- NCT01953107
- Testing
- Oral Ferrous Fumarate
- Where
- Canada
- Volunteers
- 200 people
- Sponsor
- Sunnybrook Health Sciences Centre
End Stage Renal Disease
Trace Element Replenishment Study in Hemodialysis Patients
A pilot randomized trial that compares a new renal nutritional supplement with the standard renal vitamin. The primary objective is to compare two doses (medium and high) of the new supplement with the renal vitamin currently…
- Trial name
- NCT01473914
- Testing
- Low dose: supplemental zinc, selenium and vitamin E, Standard renal vitamin: B and C renal vitamin, Medium dose: supplemental zinc, selenium and vitamin E
- Where
- 2 sites in Canada
- Volunteers
- 150 people
- Sponsor
- Marcello Tonelli
Gingival Recession, Localized, Gingival Diseases
How Can Prefabricated Membranes Load Ascorbic Acid Can Curtail Gingival Recession?
Periodontal diseases are a prevalent issue, often leading to gingival recession, where the gingival margin recedes, exposing the tooth root and causing various problems.
- Conditions
- Gingival Recession, Localized, Gingival Diseases, Recession, Gingival
- Trial name
- recession (NCT06936592)
- Testing
- Ascorbic acid
- Volunteers
- 30 people
- Sponsor
- Minia 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
Blood Pressure, Body Composition, Immune Function
Evaluating the Effects of a Synbiotic Versus Probiotic or Placebo on Gut Microbiota and Cardiometabolic Health: A Randomized Double-Blind Placebo Controlled Trial
Accordingly, the purpose of this study is to evaluate the efficacy of 1) supplementation with Synbiotic (Plexus® Triplex), 2) commercially-available Probiotic, or 3) placebo control over 30 days on the gut microbiome…
- Trial name
- GUTRCT (NCT06544915)
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Skidmore College
Parkinson Disease, Multisystem Atrophy
Proof of Mechanism Study to Evaluate Binding of Alfa-synuclein
The overall goal of this protocol is to: Evaluate [18F]UCB-2897 as an α-synuclein targeted radiopharmaceutical. The primary objective is: Confirm a specific α -synuclein signal with [18F]UCB-2897 in participants with PD and/or…
- Conditions
- Parkinson Disease, Multisystem Atrophy, Healthy Volunteer
- Trial name
- NCT05274568
- Testing
- [18F]UCB-2897
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Invicro
Iron, Cerebral Blood Flow
16 Weeks' Dietary Supplementation With Iron and Iron + Vitamin C on Cerebral Blood Flow and Energy Expenditure in Women of Reproductive Age
Iron deficiency is the most prevalent nutritional deficiency worldwide with one in four estimated to be affected by iron deficiency anaemia.
- Conditions
- Iron, Cerebral Blood Flow, Energy Metabolism, Cognitive Function
- Trial name
- NCT04477018
- Testing
- Iron bis-glycinate chelate and vitamin C, Iron bis-glycinate chelate
- Where
- United Kingdom
- Volunteers
- 78 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Acute Promyelocytic Leukemia
Study for Patients With Newly Diagnosed, High-risk Acute Promyelocytic Leukemia
Acute promyelocytic leukemia (APL) is a rare subtype of acute myeloid leukemia (AML) characterized by consistent clinical, morphologic, and genetic features.
- Trial name
- TUD-APOLLO-064 (NCT02688140)
- Testing
- Arsenic trioxide, Idarubicin, Cytarabine
- Where
- 8 sites in France, Germany and 3 more
- Volunteers
- 133 people
- Sponsor
- Technische Universität Dresden
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