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Found 33 studies with search of: vitamin B12 deficiency
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1 Completed Long-term Use of Proton Pump Inhibitors May Cause Vitamin B12 Deficiency in the Institutionalized Elderly
Condition: Vitamin B12 Deficiency
Interventions: Other: blood collection;   Drug: treatment (cyanocobalamin nasal spray)
2 Completed Oral Vitamin B12 Administration for Vitamin B12 Deficiency After Total Gastrectomy
Condition: Vitamin B12 Deficiency
Intervention: Drug: mecobalamin
3 Completed Can Recombinant Human Intrinsic Factor Be Used for Evaluation of the Vitamin B12 Absorption?
Condition: Vitamin B12 Deficiency
Intervention: Drug: Recombinant human intrinsic factor
4 Recruiting Cobalamin Status in Young Children With Gastrointestinal Symptoms or Feeding Problems
Condition: Vitamin B 12 Deficiency
Intervention: Dietary Supplement: Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
5 Recruiting Cobalamin Status in Young Children With Developmental Delay
Condition: Vitamin B 12 Deficiency
Intervention: Dietary Supplement: Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
6 Active, not recruiting How Many Patients Are in Need of Vitamin B12 Injections?
Condition: Vitamin B12 Deficiency
Intervention: Drug: vitamin B12
7 Completed Vitamin B12 Supplementation Study
Condition: Vitamin B12 Deficiency
Intervention: Dietary Supplement: Vitamin B12
8 Completed The Role of Methycobalamin in Early Dementia Patients With Vitamin B12 Deficiency and Hyperhomocysteinaemia.
Condition: Dementia With Vitamin B12 Deficiency
Intervention: Drug: Mecobalamin
9 Completed The Role of Methylcobalamin in Early Dementia Patients With Vitamin B12 Deficiency and Hyperhomocysteinaemia ?
Condition: Dementia
Intervention: Drug: methylcobal
10 Completed Cobalamin Supplementation During Infancy; Effect on B-Vitamin Status, Growth and Psychomotor Development
Condition: Vitamin B 12 Deficiency
Intervention: Drug: Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
11 Completed Holotranscobalamin Remains Unchanged During Pregnancy
Condition: Vitamin B12 Deficiency
Intervention:
12 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
13 Recruiting Evaluation of Holotranscobalamin as an Indicator of Vitamin B12 Absorption
Condition: Vitamin B12 Malabsorption
Intervention: Drug: Vitamin B12 (drug)
14 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
15 Active, not recruiting 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
16 Completed The Bread Trial: Effects of Bread Fortified With Folic Acid and Vitamin B12
Condition: Healthy
Intervention: Procedure: consumption of fortified bread
17 Recruiting 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
18 Not yet recruiting Folic Acid and Vitamin B12 in Young Indian Children
Conditions: Diarrhea;   Pneumonia
Interventions: Dietary Supplement: Folic Acid;   Dietary Supplement: Vitamin B12;   Dietary Supplement: Placebo folate and B12
19 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
20 Completed The Norwegian Vitamin Trial (NORVIT)
Condition: Acute Myocardial Infarction
Interventions: Drug: Folic acid;   Drug: Vitamin B12;   Drug: Vitamin B6

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