Clinical trials: Vitamin C
Diabetes Mellitus, Type 1, Autoimmune Diseases
Study to Evaluate the Safety and Feasibility of Diamyd® in Individuals at Risk for Type 1 Diabetes
A 2-arm randomized Phase II Open Label Study to evaluate the safety and feasibility of intralymphatic administration of Diamyd® (Diamyd) also known as retogatein in individuals at risk of Type 1 diabetes carrying the HLA DR3-DQ2…
- Conditions
- Diabetes Mellitus, Type 1, Autoimmune Diseases, Prevention
- Trial name
- NCT05683990
- Testing
- Diamyd
- Where
- Sweden
- Volunteers
- 5 people
- Sponsor
- Diamyd Medical AB
Gingivitis
Effects of Antioxidant Dentifrice on Gingivitis
The purpose of this study is to investigate the effect of a dentifrice containing L-ascorbic acid 2-phosphate magnesium salt on gingival inflammation, gingival bleeding and gingival redness.
- Trial name
- NCT02102295
- Testing
- Experimental toothpaste, Control toothpaste
- Where
- 4 sites in Japan
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Lion Corporation
Diarrhea, Infantile
Study on the Association Between Vitamin C Deficiency and Diarrhea in Children
Diarrheal disease is the second leading cause of death in children under five, althought it is both preventable and treatable. The causative factors of diarrheal diseases vary a lot from region to region (bacteria, viruses…
- Trial name
- VITAL (NCT05328037)
- Testing
- Blood sample collection
- Where
- 3 sites in Central African Republic, France and 1 more
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Institut Pasteur
Healthy, Suboptimal Vitamin C Levels
The Impact of Qualia Vitamin C+ on Blood Vitamin C Levels
This is a double-blind, placebo-controlled, parallel-group, study evaluating the effect of a Qualia Vitamin C+ formulation on Whole Blood Vitamin C levels in the blood of healthy adults aged 25 years or older.
- Trial name
- NCT07285109
- Testing
- Qualia Vitamin C+
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Qualia Life Sciences
Signs and Symptoms, Respiratory
Compare Effects of EpiCor and Vitamin C to Vitamin C Alone on the Common Cold or Influenza in Healthy Children
The purpose of the clinical study is to evaluate efficacy of regular daily, 12 weeks, consumption of EpiCor syrup containing EpiCor and vitamin C in non-vaccinated children 1-6 years old on preventing episodes of the common cold…
- Trial name
- NCT04093206
- Testing
- EpiCor and Vitamin C, Vitamin C
- Where
- 21 sites in Slovenia
- Volunteers
- 221 people, healthy volunteers welcome
- Sponsor
- Cargill
Acne Vulgaris
Acne Treatment With Active Oplon's Patches - 15-18 Years Old
The purpose of this study was to demonstrate the effect of short treatment with active OPLON patches on Acne.
- Trial name
- NCT01260766
- Testing
- Oplon Active Patch
- Where
- Israel
- Volunteers
- 50 people
- Sponsor
- Oplon-Pure Science Ltd.
Infections, Respiratory Tract
An Efficacy and Safety Study of Theraflu Day Powder as Oral Solution for Cold and Flu
The purpose of the study is to assess the short term efficacy of the Theraflu Aktiv powder for oral solution in the Russian population as compared to an untreated group to support the indication of "Short term relief of the…
- Trial name
- NCT02678234
- Testing
- Paracetamol, phenylephrine HCl, and vitamin C
- Sponsor
- GlaxoSmithKline
Basal Cell Carcinoma
Topical Vitamin C for Treatment of Basal Cell Cancer
Randomized coomparative trial of a 30% solution of ascorbic acid in 95% dimethylsulfoxide applied topically twice a day for 8 weeks vs 5% imiquimod cream in the treatment biopsy proven basal cell carcinomas inotherwise healthy…
- Trial name
- NCT04279535
- Testing
- Topical Ascorbic Acid
- Where
- United States
- Volunteers
- 25 people
- Sponsor
- Center for Biomedical Research, Inc.
Deficiency, Vitamin C, Chronic Disease
A Long-term Observational Study to Describe the Use of Vitamin-C Injektopas® 7.5 g in Patients With Vitamin C Deficiency
The goal of this observational study is to learn more about the disease and the symptoms where the product will use and in which patient groups. Further on, it is interesting to know clinical pictures, the symptoms improve.
- Conditions
- Deficiency, Vitamin C, Chronic Disease, Acute Disease
- Trial name
- NCT06983847
- Where
- Austria
- Volunteers
- 1,000 people
- Sponsor
- Pascoe Pharmazeutische Praeparate GmbH
Acne Vulgaris
Acne Treatment With Active Oplon's Patches
The purpose of this study was to demonstrate the effect of short treatment with active OPLON patches on Acne.
- Trial name
- NCT01180543
- Testing
- Oplon Active Patch
- Where
- Israel
- Volunteers
- 40 people
- Sponsor
- Oplon-Pure Science Ltd.
Endothelial Dysfunction
A Phase 2, Pharmacokinetic (PK) Study of 6R-BH4 Alone or 6R-BH4 With Vitamin C in Subjects With Endothelial Dysfunction
This Phase 2, randomized, open-label, 2-treatment, 2-sequence, 2-period crossover, pharmacokinetic (PK) study will compare plasma concentrations of BH4 in subjects with endothelial dysfunction following 14 days of treatment by…
- Trial name
- NCT00532844
- Testing
- Sapropterin Dihydrochloride, Sapropterin Dihydrochloride and Vitamin C
- Where
- United States
- Volunteers
- 52 people
- Sponsor
- BioMarin Pharmaceutical
Bioavailability
Comparative Bioavailability of Two Forms of Vitamin C
The purpose of this study is to compare levels of vitamin C in the blood over the 24 hour period following a single 1000 mg dose of vitamin C from ascorbic acid, calcium ascorbate and placebo.
- Trial name
- NCT01852903
- Testing
- calcium ascorbate, ascorbic acid
- Where
- Canada
- Volunteers
- 40 people
- Sponsor
- NBTY, Inc.
Tooth Whitening, Tooth Discoloration
Clinical Research Study to Evaluate Stain Removal and Whitening Improvement
The objective of this clinical research study is to evaluate the stain removal and whitening improvement of a toothpaste containing Vitamin C and 1100 ppm F as sodium fluoride as compared to a matching placebo toothpaste…
- Trial name
- NCT07870018
- Testing
- Vitamin C toothpaste
- Where
- United States
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Colgate Palmolive
Acne Vulgaris
Acne Treatment With Active Patches Which Contains Azelaic Acid, Citric Acid,Salicylic Acid and 2% Ascorbic Acid
The purpose of this study was to demonstrate the effect of short treatment with active OPLON patches on Acne.
- Trial name
- NCT01179633
- Testing
- OPLON active patch
- Where
- Israel
- Volunteers
- 35 people
- Sponsor
- Oplon-Pure Science Ltd.
Hepatocellular Carcinoma
A Phase II/III Clinical Study on Inhibitory Effects of E0167 on Recurrence of Hepatocellular Carcinoma
The purpose of this study is to determine the superiority of inhibitory effects and safety of Menatetrenone (E0167) on recurrence in patients with hepatocellular carcinoma.
- Trial name
- NCT00165633
- Testing
- Menatetrenone
- Where
- 30 sites in Japan
- Volunteers
- 540 people
- Sponsor
- Eisai Limited
Tolerance
Tolerance of Two Forms of Vitamin C in Acid-sensitive Adults
The purpose of this study is to compare the tolerance of two forms of vitamin C in adults with sensitivity to acidic foods.
- Trial name
- NCT01873820
- Testing
- Calcium ascorbate, Ascorbic acid
- Where
- Canada
- Volunteers
- 50 people
- Sponsor
- NBTY, Inc.
Vitamin C Deficiency, Acute Disease
A Long-term Study to Describe the Use of PASCORBIN® 7.5 g in Patients With Vitamin C Deficiency
The aim of this long-term observational study is the documentation of the use of PASCORBIN® 7.5 g in patients with vitamin C deficiency.
- Conditions
- Vitamin C Deficiency, Acute Disease, Chronic Disease
- Trial name
- NCT02422901
- Testing
- vitamin C
- Where
- Germany
- Volunteers
- 5,000 people
- Sponsor
- Pascoe Pharmazeutische Praeparate GmbH
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.
Venous Disease Classification (CEAP): C2 or C3
EXPLORATORY ASSESSMENT OF THE EFFECTS OF CYCLO 3 ® FORT (Ruscus Extract, Hesperidin Methyl Chalcone, Ascorbic Acid) OR MICRONISED PURIFIED FLAVONOID FRACTION ON VASCULAR PARAMETERS AND BIOMARKERS IN WOMEN SUFFERING FROM CHRONIC VENOUS DISEASE (CEAP C2 OR C3), OVER 8 WEEKS
Chronic Venous Disorder is the most prevalent vascular disease. It is multifactorial pathology that has an important impact on quality of life and represents a significant public health concern, due to its very high frequency in…
- Trial name
- NCT02907320
- Testing
- CYCLO 3 ® FORT, MPFF
- Sponsor
- Pierre Fabre Medicament
Pollution; Exposure
Effect of an Oral Acerola Juice Powder on Skin Beauty Parameters in Women Exposed to Environmental Stresses
The study is being conducted to evaluate the efficacy and the safety of an oral acerola-based product on skin ageing parameters.
- Trial name
- NCT07229131
- Testing
- Acerola Juice Powder 1200 mg/day, Acerola Juice Powder 600 mg/day
- Where
- China
- Volunteers
- 108 people
- Sponsor
- Diana SAS