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71 studies found for:    vitamin B12 deficiency

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Rank Status Study
21 Completed Relative Bioavailability of Folic Acid and L-5-Methlytetrahydrofolate
Condition: Vitamin B12 Deficiency
Interventions: Dietary Supplement: L-5-methyltetrahydrofolate (Metafolin ®);   Dietary Supplement: folic acid;   Dietary Supplement: Placebo
22 Recruiting Cobalamin Absorption From Fortified Food
Conditions: Vitamin B-12 Deficiency;   Achlorhydria
Intervention: Other: 14C-B12 fortified bread
23 Completed Interaction of Cobalamin Status With Nitrous Oxide in Relation to Postoperative Cognitive Changes in the Elderly
Conditions: Avitaminosis;   Delirium, Dementia, Amnestic, Cognitive Disorders
Intervention: Drug: general anesthesia
24 Active, not recruiting Vitamin B12 Supplementation During Pregnancy
Conditions: Nutritional Anemia in Mothers.;   Nutritional Anemia in Infants.
Interventions: Dietary Supplement: Vitamin B12;   Dietary Supplement: Placebo
25 Completed
Has Results 		Evaluation of Holotranscobalamin as an Indicator of Vitamin B12 Absorption
Condition: Disorder of Vitamin B12
Intervention: Dietary Supplement: Vitamin B12
26 Completed Oral Vitamin B12 Supplementation and Cognitive Performance in Elderly People
Conditions: Cognitive Decline;   Cognitive Symptoms
Interventions: Behavioral: vitamin B12 supplementation;   Behavioral: vitamin B12 + folic acid combined supplementation
27 Recruiting Postoperative Vitamin Supplementation in Morbidly Obese Patient (VITAAL Study)
Conditions: Obesity;   Vitamin Deficiency
Interventions: Dietary Supplement: Fit For me;   Dietary Supplement: Davitamon
28 Completed The Bread Trial: Effects of Bread Fortified With Folic Acid and Vitamin B12
Condition: Healthy
Intervention: Procedure: consumption of fortified bread
29 Unknown † Comparison of Vitamin B12 Supplementation to Selective Serotonin Reuptake Inhibitor (SSRI) Versus SSRI Antidepressant Treatment Alone
Condition: Major Depressive Disorder
Intervention: Dietary Supplement: Vitamin B12
30 Unknown † Examining B12 Deficiency Associated With C677T Mutation on MTHFR Gene in Terms of Commonness and Endothelial Function
Condition: B12 Deficiency Combined With C677T Mutation on MTHFR Gene
Interventions: Dietary Supplement: B12 Vitamin;   Dietary Supplement: Vitamin B12 + Folic Acid
31 Completed NAC-003 P.L.U.S. Program (Progress Through Learning Understanding & Support)
Conditions: Early Memory Loss;   Mild Cognitive Impairment;   Alzheimer's Disease;   Vascular Dementia
Intervention: Other: CerefolinNAC®
32 Not yet recruiting Evaluation of the Efficacy in Decreasing Iron Absorption in Patients With Congenital Dyserythropoietic Anemia Type I by Treatment With LOSEC
Condition: CDA Type I
Intervention: Drug: omeprazole
33 Completed B Vitamin Status in Premature and Small for Gestational Age(SGA) Infants
Conditions: Biochemical Cobalamin Status;   Motor Neurodevelopment
Interventions: Dietary Supplement: Hydroxycobalamin;   Dietary Supplement: Sham injection
34 Completed WENBIT - Western Norway B Vitamin Intervention Trial
Conditions: Coronary Artery Disease;   Myocardial Infarction;   Cerebrovascular Stroke
Interventions: Drug: folic acid, vitamin B12 (cyanocobalamin), vitamin B6 (pyridoxine);   Drug: folic acid, vitamin B12 (cyanocobalamin);   Drug: vitamin B6 (pyridoxine);   Drug: placebo
35 Completed The Norwegian Vitamin Trial (NORVIT)
Condition: Acute Myocardial Infarction
Interventions: Drug: Folic acid;   Drug: Vitamin B12;   Drug: Vitamin B6
36 Recruiting Efficacy of a Novel Multivitamin-Mineral Supplement in Preventing Vitamin Deficiency in Postoperative Bariatric Patients
Condition: Bariatric Surgery Candidate
Interventions: Dietary Supplement: AquaVanta Chewable Tablet;   Dietary Supplement: Flinstones Complete;   Dietary Supplement: Nature Made Calcium Softgels;   Dietary Supplement: Twin Labs Iron Caps;   Dietary Supplement: Rexall Vitamin B12 Tablet
37 Not yet recruiting Multiple Nutritional Deficiencies Causing Dementia of the Alzheimer Type
Conditions: Mild Cognitive Impairment;   Alzheimers Disease
Intervention:
38 Completed Effect of Prenatal Nutritional Supplementation on Birth Outcome in Hounde District, Burkina Faso
Conditions: Intrauterine Growth Retardation;   Low Birth Weight
Interventions: Dietary Supplement: UNIMMAP - multiple micronutrients;   Dietary Supplement: Food supplement enriched with multiple micronutrients
39 Not yet recruiting Assessment of Nutritional Consequences of Sleeve Gastrectomy
Condition: Obesity
Intervention: Procedure: Longitudinal sleeve gastrectomy
40 Completed A Retrospective Analysis of Neevo®/Neevo®DHA Compared to a Standard Prenatal Vitamin in Anemia During Pregnancy
Conditions: Anemia in Pregnancy;   Preeclampsia
Interventions: Other: Neevo® (a medical food);   Other: Prenatal vitamins (≤1mg folic acid, 27 - 35mg iron, and ≤12mcg vitamin B12)
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† Indicates status has not been verified in more than two years