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80 studies found for:    Open Studies | "Vitamin A"
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Rank Status Study
1 Not yet recruiting Using Stable Isotope Techniques to Monitor and Assess the Vitamin A Status of Children Susceptible to Infection
Condition: Vitamin A Deficiency
Intervention: Dietary Supplement: Mega-dose of vitamin A supplement
2 Recruiting Retinol on Human Skin Aging in East Asian Descent
Condition: Intrinsic Aging of Skin
Interventions: Drug: Retinol;   Drug: Placebo
3 Recruiting Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status
Condition: Vitamin A Deficiency
Interventions: Dietary Supplement: Conventional white maize;   Dietary Supplement: Provitamin A carotenoid biofortified maize;   Dietary Supplement: Preformed vitamin A fortified maize
4 Recruiting Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children
Condition: Healthy Participants
Interventions: Biological: Influenza virus vaccine;   Dietary Supplement: Vitamins A and D;   Other: Placebo
5 Recruiting Effects of EED on Zn Absorption and Retention in Children From a Standard Dose
Conditions: Environmental Enteric Dysfunction;   Zinc Deficiency;   Vitamin A Deficiency
Interventions: Drug: 3 mg zinc sulfate supplement;   Drug: 0.5 mg of 13C10-retinyl-acetate
6 Recruiting Effect of Lipidic Nutrients on Memory and Well Being in Healthy Aging Adults
Condition: Healthy
Interventions: Dietary Supplement: Vitamin A +Long chain PUFA;   Other: Placebo
7 Recruiting Vitamin A in Brown Fat Activity
Condition: Brown Adipose Tissue
Intervention: Other: Cold exposure
8 Not yet recruiting The Role of Antioxidant Supplementation in Keratoconus Patients
Condition: Keratoconus
Interventions: Other: Antioxidants (Vitamins A,C,E) plus GSH;   Other: Placebo;   Dietary Supplement: Centrum;   Other: Dietary Sources
9 Recruiting Retinol-induced Dermatitis in Aged Skin
Conditions: Aged Skin;   Photoaged Skin
Intervention:
10 Not yet recruiting Immunogenicity and Safety Study of GSK Biologicals' Candidate Malaria Vaccine Given at 6, 7.5 and 9 Months of Age in Co-administration With Measles, Rubella and Yellow Fever (YF) Vaccines Followed by a Booster of the Malaria Vaccine.
Condition: Malaria Vaccines
Interventions: Dietary Supplement: Vitamin A;   Biological: Candidate Plasmodium falciparum malaria vaccine;   Biological: MR-Vac;   Biological: Stamaril
11 Recruiting Comparison of Two Nutrition Interventions in Young Children in El Salvador
Condition: Micronutrient Deficiency
Interventions: Dietary Supplement: 21 micronutrient-fortified supplement;   Dietary Supplement: Cereal Fortificado (Fortified Cereal);   Dietary Supplement: Ferrous sulphate;   Dietary Supplement: Vitamin A
12 Recruiting Pharmacogenomics Study on Treatment of Psoriasis Vulgaris by Acitretin Capsules
Condition: Psoriasis Vulgaris
Intervention: Drug: Acitretin Capsules
13 Recruiting A Multicenter Trial, Comparing a 25G EUS Fine Needle Aspiration (FNA) Device With a 20G EUS ProCore Fine Needle Biopsy (FNB) Device
Conditions: Pancreatic Masses;   Lymph Nodes
Interventions: Device: 25G FNA needle;   Device: 20G ProCore FNB needle
14 Recruiting Phase 2 Tolerability and Effects of ALK-001 on Stargardt Disease
Conditions: Stargardt Disease;   Stargardt Macular Degeneration;   Stargardt Macular Dystrophy;   Autosomal Recessive Stargardt Disease 1 (ABCA4-related)
Interventions: Drug: ALK-001;   Drug: Placebo
15 Recruiting Interventional Testing of Gene-environment Interactions Via the Verifomics Mobile Application
Conditions: Obesity;   Rhinitis;   Rhinitis, Allergic;   Respiratory Sounds;   Dyspnea;   Headache;   Migraine Disorders;   Arthritis;   Arthralgia;   Anxiety;   Sleep Initiation and Maintenance Disorders;   Sleep Deprivation
Interventions: Dietary Supplement: Vitamin A;   Dietary Supplement: Vitamin B6;   Dietary Supplement: Vitamin C;   Dietary Supplement: Nicotinamide;   Dietary Supplement: Vitamin D3;   Dietary Supplement: Vitamin E;   Other: Broccoli;   Other: Spinach;   Dietary Supplement: Caffeine;   Other: Coffee;   Device: Axon Eyewear;   Other: Chocolate
16 Not yet recruiting Intercostal Liposomal Bupivacaine for the Management of Blunt Chest Wall Trauma
Conditions: Blunt Chest Wall Trauma;   Rib Fracture;   Sternal Fracture
Interventions: Drug: Liposomal bupivacaine;   Drug: 0.9% sodium chloride
17 Not yet recruiting Lidocaine Injection Versus Sham Needling in Treating Whiplash Associated Disorder
Conditions: Whiplash Injuries,;   Neck Pain,
Interventions: Procedure: Lidocaine;   Other: Saline
18 Not yet recruiting Edoxaban Treatment Versus Vitamin K Antagonist in Patients With Atrial Fibrillation Undergoing Percutaneous Coronary Intervention
Condition: Atrial Fibrillation
Interventions: Drug: Edoxaban;   Drug: Clopidogrel;   Drug: Prasugrel;   Drug: ticagrelor
19 Recruiting 22 G - 25 G SINS Trial for Pancreatic Masses
Condition: Pancreatic Neoplasms
Interventions: Procedure: EUS-FNA of pancreatic masses;   Device: 22 gauge needle;   Device: 25 gauge needle
20 Recruiting The Efficacy of Severe Whitening and Delayed Fading in Acetic Acid-enhanced Endoscopy for Diagnosing Gastric Intestinal Metaplasia
Condition: Gastric Intestinal Metaplasia
Interventions: Procedure: acetic acid-enhanced endoscopy;   Drug: Acetic Acid;   Device: endoscope

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Study has passed its completion date and status has not been verified in more than two years.