Clinical trials: Ascorbic Acid
- Condition Ascorbic Acid
- Funder type Industry (pharma, biotech, devices)
- Accepts healthy volunteers yes
Collagen Synthesis, Rate of Force (RFD) Development
Effects of Hydrolyzed Collagen and Vitamin C on Explosive Performance
Determine whether supplementation with a combined dose of 20 g of hydrolyzed collagen and 50 mg vitamin C, along with a power training exercise program, increases rate of force development (RFD) and performance in athletes
- Trial name
- NCT04437758
- Testing
- Collagen and Vitamin C powder mix nutritional intervention, Maximum power training exercise
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
Healthy Subject, Immunity
The Effect of the Consumption of 4 Botanical Extracts on Immunity in Healthy Adults (B-4-Immune)
This study will evaluate the capacity of botanical extracts to modulate immune mechanisms compared to a placebo group in healthy volunteers.
- Trial name
- B-4-Immune (NCT05117385)
- Testing
- Botanical extract
- Where
- France
- Volunteers
- 115 people, healthy volunteers welcome
- Sponsor
- Givaudan France Naturals
Dietary Exposure
Bioequivalence Study on Vitamin C in Healthy Adults
The objective of this exploratory pharmacokinetic research study is to demonstrate that both caplets and gummies provide an effective dose of ascorbic acid in healthy adults.
- Trial name
- NCT03562988
- Testing
- Vitamin C gummy, Vitamin C tablet
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Church & Dwight Company, Inc.
Squamous Cell Cancer, Squamous Cell Carcinoma
Topical Ascorbic Acid for Treatment of Squamous Cell Skin Cancer
Randomized comparative 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 of biopsy proven squamous cell carcinomas of the skin in…
- Conditions
- Squamous Cell Cancer, Squamous Cell Carcinoma, Skin Cancer, Non-melanoma Skin Cancer
- Trial name
- NCT05932511
- Testing
- 30% ascorbic acid in DMSO
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Center for Biomedical Research, Inc.
Quality of Life
Effect of Colon Delivered Vitamin C on Gut Microbiota and Related Health Biomarkers in Healthy Older Adults
Recent studies have shown that many vitamins, if consumed in high daily dosages or delivered to the colon, can modulate the gut microbiota and their metabolites.
- Trial name
- NCT05598619
- Testing
- Vitamin C
- Where
- Ireland
- Volunteers
- 264 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
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
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
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
Vitamin C Deficiency
The Effect of Liposome Vitamin C on the Absorption and Metabolism of the Human Body.
To evaluate the difference between vitamin C in the form of oral liposomes and general vitamin C in a fixed period of time in plasma and urine.
- Trial name
- NCT04886752
- Testing
- vitamin C without liposome, liposomal process A vitamin C, liposomal process B vitamin C (Double Nutri™)
- Where
- Taiwan
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- TCI Co., Ltd.
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
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
Wrinkle, Skin Pigmentation
Prospective Study of Topical Vitamin C (THDA) Versus Topical Vitamin C (THDA) With Acetyl Zingerone
The purpose of this study is to asses the impact of topically applying a form of vitamin C known as tetrahexyldecyl Ascorbate (THDA) along with a novel anti-aging ingredient, acetyl zingerone, compared against applying THDA alone.
- Trial name
- NCT05779280
- Testing
- THDA + Acetyl Zingerone Topical Product, THDA
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Integrative Skin Science and Research
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.
Hyperpigmentation, Photodamaged Skin
A Multi-Center, Open-label Study Evaluate the Efficacy and Tolerability of a Dual Skincare Regimen Treatment for Facial Hyperpigmentation and Photodamaged Skin in Patients Exposed to Extrinsic Factors of Aging
This open-label, multi-center clinical trial was conducted to evaluate the dual skincare regimen of vitamin C serum and moisturizing sunscreen SPF 45 to improve facial hyperpigmentation and photodamage after 12 weeks of twice…
- Conditions
- Hyperpigmentation, Photodamaged Skin, Wrinkle, Fine Lines
- Trial name
- NCT05423873
- Testing
- Gentle Cleansing Lotion, Revision Skincare
- Where
- 3 sites in United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Revision Skincare
Skin Condition, Anti-Oxidative Stress
Efficacy Evaluation Study of Vitamin C and Glutathione Liquid Sachet
The objective of this study is to evaluate the effect of liquid vitamin C and glutathione supplements on human skin condition improvement and anti-oxidation.
- Trial name
- NCT07379216
- Testing
- Vitamin C and Glutathione Liquid Sachet
- Where
- Taiwan
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- TCI Co., Ltd.
Iron Deficiency Anemia
Nutrient Fortified Oat Drink
This study will follow a randomized, double-blind, placebo-controlled, parallel-group design to test if an oat beverage fortified with iron, zinc vitamin A and vitamin C will improve nutrient status and iron deficiency in young…
- Trial name
- NCT01418898
- Testing
- Dietary Intervention
- Where
- Philippines
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
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
Healthy, Suboptimal Vitamin C Levels
The Impact of Qualia Vitamin C+ on Individuals With Suboptimal and Adequate 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 that have suboptimal…
- Conditions
- Healthy, Suboptimal Vitamin C Levels, Adequate Vitamin C Levels
- Trial name
- NCT07652346
- Testing
- Qualia Vitamin C+
- Where
- United States
- Volunteers
- 152 people, healthy volunteers welcome
- Sponsor
- Qualia Life Sciences
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
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.