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128 studies found for:    vitamin B12 deficiency
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Rank Status Study
1 Completed Oral Vitamin B12 Administration for Vitamin B12 Deficiency After Total Gastrectomy
Condition: Vitamin B12 Deficiency
Intervention: Drug: mecobalamin
2 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)
3 Completed
Has Results
Autoantibodies to Gastric Parietal Cells in Rheumatoid Arthritis Patients
Condition: Vitamin B12 Deficiency
4 Completed Metformin Use and Vitamin B12 Deficiency
Conditions: Vitamin B12 Deficiency;   Type 2 Diabetes Mellitus
5 Active, not recruiting Oral/Intramuscular B12 to Treat Cobalamin Deficiency
Condition: Vitamin B 12 Deficiency
Interventions: Drug: oral Cobalamin (vitamin B12);   Drug: intramuscular Cobalamin (vitamin B12)
6 Completed Vitamin B12 Supplementation Study
Condition: Vitamin B12 Deficiency
Interventions: Dietary Supplement: Vitamin B12;   Dietary Supplement: placebo
7 Unknown  Vitamin Deficiencies and Suppletion in Morbid Obesity
Condition: Vitamin B12 Deficiency
Interventions: Drug: Hydroxocobalamin;   Drug: FitForMe vitamin B12
8 Unknown  How Many Patients Are in Need of Vitamin B12 Injections?
Condition: Vitamin B12 Deficiency
Intervention: Drug: vitamin B12
9 Completed
Has Results
Impact of Vitamin B12 Replacement on Epogen Dosing and Improvement of Quality of Life in Hemodialysis Patients
Condition: Vitamin B12 Deficiency
Intervention: Drug: Vitamin B12
10 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
11 Completed 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)
12 Completed Cobalamin Status in Young Children With Developmental Delay
Condition: Vitamin B 12 Deficiency
Intervention: Dietary Supplement: Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
13 Completed The Role of Methycobalamin in Early Dementia Patients With Vitamin B12 Deficiency and Hyperhomocysteinaemia.
Condition: Dementia With Vitamin B12 Deficiency
Intervention: Drug: Mecobalamin
14 Completed The Association Between Religious Origin and Age, and Vitamin B12 and Folic Acid Plasma Levels in Non Jewish Population in Western Galilee
Conditions: Vitamin B12 Deficiency;   Folic Acid Deficiency
Intervention: Other: Blood Sample
15 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)
16 Completed Study to Identify Adequate Biomarker to Detect Vitamin B12 Deficiency in Type 2 Diabetic Patients Treated With Metformin
Condition: Diabetes Mellitus Type 2
Interventions: Other: Questionnaire administration;   Other: Laboratory biomarker analysis
17 Completed Vitamin B12 Acceptance and Biomarker Response Study
Condition: Vitamin B 12 Deficiency
Interventions: Drug: Oral administration of vitamin B12;   Drug: i.m. injection of vitamin B12
18 Completed Efficacy and Safety Study of Oral Eligen® B12 in Subjects With Low Serum Cobalamin
Condition: Vitamin B 12 Deficiency
Intervention: Other: Vitamin B12 (cyanocobalamin)
19 Completed Supplementary Vitamin B12 Effects on Elevated Homocysteine Levels of Vegetarians - Clinical Trial
Condition: Vitamin B12 Deficiency
Interventions: Dietary Supplement: Inactive lozenge;   Dietary Supplement: Methylcobalamin
20 Completed Comparison of Two Pharmacist-led Population Management Approaches to Increase Monitoring of Vitamin B12 and Serum Creatinine Levels for Patients on Metformin
Conditions: Type 2 Diabetes;   Vitamin B12 Deficiency;   Neuropathy;   Anemia
Interventions: Behavioral: Office visit intervention;   Behavioral: Electronic Message Intervention

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