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92 studies found for:    Open Studies | "Vitamin A"
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Rank Status Study
1 Recruiting Vitamin A Replacement in Patients Undergoing HSCT and Its Role on MBI-LCBI Rates
Condition: Hematopoietic Stem Cell Transplant
Intervention: Dietary Supplement: Vitamin A
2 Not yet recruiting Vitamin A and Azithromycin for Acne Vulgaris
Condition: Acne Vulgaris
Interventions: Drug: Vitamin A;   Drug: Azithromycin
3 Recruiting Novel Isotope Dilution Technique to Assess Vitamin A Status and Hypervitaminosis A
Conditions: Inflammation;   High Vitamin A Store;   Adequate Vitamin A Store
Intervention: Device: Stable isotope labelled vitamin A
4 Recruiting Efficacy of Vitamin A Fortified Rice in Lactating Thai Women
Condition: Vitamin A Status
Interventions: Other: Vitamin A fortified rice;   Other: Normal rice
5 Recruiting Assessing Model Parameters for Applying the Retinol Isotope Dilution (RID) Method
Conditions: Vitamin A Deficiency;   Malaria;   Inflammation
Intervention: Other: Retinol Isotope Dilution (RID)
6 Recruiting Effects of Retinoids on CYP2D6 Activity During Pregnancy
Condition: CYP2D6 Polymorphism
Intervention: Drug: Vitamin A
7 Recruiting Comparison of the Cosmetic Effects of Bakuchiol and Retinol
Conditions: Wrinkle;   Photoaging
Interventions: Drug: Bakuchiol;   Drug: Retinol
8 Recruiting Retinol on Human Skin Aging in East Asian Descent
Condition: Intrinsic Aging of Skin
Interventions: Drug: Retinol;   Drug: Placebo
9 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
10 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
11 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
12 Recruiting Effect of SLC30A8 rs13266634 Genetic Polymorphism on Zinc Supplementation and Glycemic Control in Egyptian Patients With Type 2 Diabetes Mellitus
Condition: Diabetes Mellitus, Type II
Interventions: Drug: zinc supplement plus vitamin A and E;   Drug: vitamin A and E
13 Recruiting Vitamin A Status and Risk of Excessive Vitamin A Intake Among Urban Filipino Children
Condition: Vitamin A Status
Interventions: Other: High VA intake, recent VAS;   Other: High VA intake;   Other: Low/adequate VA intake
14 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
15 Recruiting Vitamin A in Brown Fat Activity
Condition: Brown Adipose Tissue
Intervention: Other: Cold exposure
16 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
17 Recruiting Retinol-induced Dermatitis in Aged Skin
Conditions: Aged Skin;   Photoaged Skin
Intervention:
18 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
Interventions: Dietary Supplement: Vitamin A;   Biological: Candidate Plasmodium falciparum malaria vaccine;   Biological: MR-Vac;   Biological: Stamaril
19 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
20 Recruiting Pharmacogenomics Study on Treatment of Psoriasis Vulgaris by Acitretin Capsules
Condition: Psoriasis Vulgaris
Intervention: Drug: Acitretin Capsules

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