Clinical trials: Antioxidant Effect
Chronic Periodontitis
Effect of Arthrospira Platensis (Spirulina) as an Adjunct to Scaling and Root Planing on Salivary Antioxidant Levels in Chronic Periodontitis Subjects
Introduction- Oxidative stress plays a causative role in pathogenesis of periodontal disease. It has been reported that Spirulina platensis or its active ingredient C phycocyanin (CPC) exerts anti-inflammatory, anti-oxidative and…
- Trial name
- NCT02886676
- Testing
- Spirulina capsules
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Tatyasaheb Kore Dental College
Metastatic Hepatocellular Carcinoma, Advanced Liver Cancer
A Study of Vitamin C in the Treatment of Liver Cancer to Determine if it is Safe and Effective
This protocol is a phase I/II, study of ascorbic acid (AA) infusions combined with treatment with sorafenib versus treatment with sorafenib alone in subjects with metastatic hepatocellular carcinoma.
- Trial name
- NCT01754987
- Testing
- Ascorbic Acid + Sorafenib, Sorafenib
- Where
- United States
- Volunteers
- 5 people
- Sponsor
- Thomas Jefferson University
Cardiovascular Diseases, Cardiovascular Risk Factor
The Effect of Antioxidants on Skin Blood Flow-BH4
The goal of this study is to examine possible mechanisms of heightened vasoconstriction in Black/African American men and women as possible links to the elevated prevalence of cardiovascular dysfunction and disease.
- Conditions
- Cardiovascular Diseases, Cardiovascular Risk Factor, Vasoconstriction
- Trial name
- NCT03680573
- Testing
- Control: Lacated Ringers, Apocynin, Allopurinol
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- The University of Texas at Arlington
Colon Cancer
Dietary Supplement on the Intestinal Microbiota in Patients with Colon Cancer
Effect of a dietary supplement with antioxidant and anti-inflamatory properties on the intestinal microbiota in patients with colon cancer. Ramdonized placebo controlled clinical trial. Teratrophic study
- Trial name
- TERATROFO (NCT05472753)
- Testing
- Experimental Treatment, DCOOP Product, Hydroxytyrosol extract, Experimental Treatment,Indukern product, Curcumin and selenium extract, Control Treatment
- Where
- Spain
- Volunteers
- 75 people
- Sponsor
- Fundación Pública Andaluza para la Investigación de Málaga en Biomedicina y Salud
Female Sexual Dysfunction
the Ameliorating Effects of Antioxidant Gel on Female Arousal Disorder and Sexual Dysfunction
The aim of this study is to evaluate the quality of sexual life of females with sexual interest or arousal disorder before and after accurate application of a formulated emulgel made from natural ingredients, including kaempferol…
- Trial name
- NCT06060691
- Testing
- Kaempferol
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Deraya University
Pigmentation
The Effect of Topical Sunscreen Plus Antioxidant Against the Visible Light Biological Effects
Visible light is known to induce pigmentation in darker skin types. The investigators aim to study the effects of visible light on the skin after topical application of sunscreen plus antioxidant.
- Trial name
- NCT03065582
- Testing
- Topical Product A, Topical Product B, Topical Product C
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Henry Ford Health System
Periodontal Diseases, Gingival Diseases
Asprosin and Total Antioxidant/Oxidant Status in Diabetes and Periodontal Disease
The goal of this observational study is to learn about how different periodontal health status affects the levels of asprosin (a hormone) and total oxidant/antioxidant status in the gingival crevicular fluid and blood serum of…
- Conditions
- Periodontal Diseases, Gingival Diseases, Type 2 Diabetes
- Trial name
- NCT07691060
- Where
- Turkey (Türkiye)
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Saglik Bilimleri Universitesi
Cardiovascular Diseases, Cardiovascular Risk Factor
Local Antioxidant Therapy Vasoconstriction Effects in Different Races
Cardiovascular disease (CVD) afflicts nearly one-third of the adult population with all races and ethnicities represented in CVD prevalence.
- Conditions
- Cardiovascular Diseases, Cardiovascular Risk Factor, Vasoconstriction
- Trial name
- NCT03684213
- Testing
- Control (Norepinephrine), Norepinephrine + Ascorbic Acid, Norepinephrine + L-NAME
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- The University of Texas at Arlington
Tardive Dyskinesia
Melatonin Treatment for Tardive Dyskinesia in Schizophrenia
This is a double-blind, randomized, placebo-controlled trial of melatonin as an add-on therapy to antipsychotics will be performed to examine the effects of melatonin on tardive dyskinesia symptoms and cognitive deficits in 120…
- Trial name
- NCT01391390
- Testing
- Melatonin
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Beijing HuiLongGuan Hospital
Antioxidant Status
Rapid Effects of a Biofield Patch on Antioxidant Status and Cellular Energy
The goal for this clinical proof-of-concept study is to compare an active biofield skin patch to a placebo patch on antioxidant function and mitochondrial function.
- Trial name
- NCT07314359
- Testing
- Active dermal patch
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Natural Immune Systems Inc
Skin Quality, Skin Wrinkles
Evaluation of Effects on Skin Quality of a Centella Asiatica Extracellular Vesicle-based Skin Care Formulation.
The study evaluates the effects of a skin care formulation containing Centella asiatica extracellular vesicles as the main active ingredient on facial appearance and skin quality in healthy participants.
- Conditions
- Skin Quality, Skin Wrinkles, Melanin Hyperpigmentation, Skin Hydration
- Trial name
- NCT06850935
- Testing
- Centella asiatica extracellular vesicle formulation
- Where
- Taiwan
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Hungkuang University
Healthy
The Effect of Fruit and Fruit Juice on Plasma Total Antioxidant Capacity
The aim of the study is to compare the effect of consumption of a fruit beverage on plasma antioxidant capacity with that of the consumption of fruit.
- Trial name
- NCT00545415
- Testing
- Order 1, Order 2, Order 3
- Where
- Netherlands
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Type 2 Diabetes Mellitus
Dietary Antioxidants, Redox Tone and Health Promotion: an Orthomolecular Study of Interactions
Aging is associated with increased risk of various diseases, and much attention is given to the use of natural products (like herbs) and 'functional food', such as teas, for healthy aging.
- Trial name
- NCT01315977
- Testing
- Green tea
- Where
- China
- Volunteers
- 60 people
- Sponsor
- The Hong Kong Polytechnic University
Diabete Mellitus, Type 2 Diabetes
Mangosteen Supplement as Adjuvant Therapy With Sitagliptin/Metformin in Iraqi Patients With Type 2 Diabetes
This clinical trial was conducted at the National Diabetes Center for Treatment and Research, Mustansiriyah University, Baghdad (Sept 2024-May 2025).
- Conditions
- Diabete Mellitus, Type 2 Diabetes, Obesity Type 2 Diabetes Mellitus, Dyslipidemia in Patients With Diabetes Mellitus
- Trial name
- NCT07172269
- Testing
- Sitagliptin + Metformin, mangosteen supplement, Lifestyle Management
- Where
- Iraq
- Volunteers
- 58 people
- Sponsor
- Mais Qais Hbeeb
End-Stage Kidney Disease, Peritoneal Dialysis
Anti-Oxidant Effect on Peritoneal Membrane in Peritoneal Dialysis (PD) Patients
Peritoneal fibrosis is one of the major causes of technical failure in patients on peritoneal dialysis (PD) for long period of time.
- Trial name
- NCT01111422
- Testing
- N-acetylcysteine
- Where
- South Korea
- Volunteers
- 66 people
- Sponsor
- Ewha Womans University
Pre-diabetes
Resveratrol and First-degree Relatives of Type 2 Diabetic Patients
The main objective of the study is to investigate if resveratrol supplementation can improve overall and muscle-specific insulin sensitivity in first-degree relatives of type 2 diabetic patients.
- Trial name
- NCT02129595
- Testing
- resveratrol
- Where
- Netherlands
- Volunteers
- 15 people
- Sponsor
- Maastricht University Medical Center
Disorder Related to Renal Transplantation
Study of the Effect of N-acetyl Cysteine on the Renal Graft Function Biomarkers (IL18, NGAL)
The purpose of this study is to investigate the effect of (NAC) N-Acetyl Cysteine on biomarkers of Delayed Graft Function (DGF), including Neutrophil Gelatinase Associated Lipocalin (NGAL) and Intereleukin 18 (IL18).
- Trial name
- NCT01403506
- Testing
- N-acetyl Cysteine
- Where
- Iran
- Volunteers
- 60 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Hyperglycemia, Postprandial
Effect of Baobab Fruit on Postprandial Glycaemia in Healthy Adults
Baobab fruits have been traditionally used in Africa due to its therapeutic proprieties attributed to it high polyphenol content.
- Trial name
- NCT05140629
- Testing
- Baobab fruit aqueous extract
- Where
- Portugal
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Egas Moniz - Cooperativa de Ensino Superior, CRL
Carbon Monoxide Exposure
The Effect of Blood Carboxyhemoglobin Levels on Total Antioxidant (Tas), Total Oxidant(Tos), Hypoxia Inducible Factor-1a (hif1a) During Low-flow and Normal-flow Anesthesia
In contrast to toxic CO concentrations, low-dose CO acts as a signaling molecule and can exert many complex cytoprotective effects.
- Trial name
- NCT05661045
- Testing
- low-flow anesthesia
- Where
- Turkey (Türkiye)
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- Ataturk Training and Research Hospital
Type 2 Diabetes Mellitus
Effect of Conjugated Linoleic Acid Alone and in Conjunction With Vitamin E in Patients With Type 2 Diabetes Mellitus
Conjugated linoleic acids (CLAs) comprise a family of linoleic acid (18:2n-6; LA) isomers that are formed by biohydrogenation and oxidation processes in nature.
- Trial name
- NCT01099163
- Testing
- Tonalin SG1000T FFA
- Where
- Iran
- Volunteers
- 60 people
- Sponsor
- Shahid Beheshti University of Medical Sciences