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CTRI Number  CTRI/2025/09/094880 [Registered on: 16/09/2025] Trial Registered Prospectively
Last Modified On: 14/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Do vitamin B12 tablets work as well as vitamin B12 injections for pregnant women with mild to moderate vitamin B12 deficiency? 
Scientific Title of Study   Comparison of effect of oral versus intramuscular vitamin b12 administration on its serum levels 3 months post treatment among pregnant women with mild and moderate vitamin b12 deficiency in second trimester - a Randomized controlled trial 
Trial Acronym  B12  
Secondary IDs if Any  
Secondary ID  Identifier 
Nil  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Deboleena Sinha  
Designation  Junior Resident, Department of Obstetrics and gynaecology  
Affiliation  Jawaharlal Institute of Postgraduate Medical Education and Research 
Address  Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research

Pondicherry
PONDICHERRY
605006
India 
Phone  9131367451  
Fax    
Email  deboleena.sinha.7@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr. Ashwini Vishalakshi.L 
Designation  Assistant Professor, Department of Obstetrics and Gynaecology  
Affiliation  Jawaharlal Institute of Postgraduate Medical Education and Research  
Address  Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research

Pondicherry
PONDICHERRY
605006
India 
Phone  9600203086  
Fax    
Email  akshivishal@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr. Ashwini Vishalakshi.L 
Designation  Assistant Professor, Department of Obstetrics and Gynaecology  
Affiliation  Jawaharlal Institute of Postgraduate Medical Education and Research 
Address  Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research

Pondicherry
PONDICHERRY
605006
India 
Phone  9600203086  
Fax    
Email  akshivishal@gmail.com  
 
Source of Monetary or Material Support  
Intramural research fund committee, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry 
 
Primary Sponsor  
Name  Intramural research fund committee JIPMER 
Address  IEC office, Second floor, Admin Block, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India, 605006 
Type of Sponsor  Research institution 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Deboleena Sinha   Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry  Antenatal Ward and Antenatal Out Patient Department, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry
Pondicherry
PONDICHERRY 
9131367451

deboleena.sinha.7@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: E538||Deficiency of other specified B group vitamins,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Inj Vitamin B12   1000mcg IM daily for 7 days - weekly for 6 weeks - monthly for 3months total 
Intervention  T. Vitamin b12 (cyanocobalamin)  1000mcg PO daily for 90 days 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  50.00 Year(s)
Gender  Female 
Details  Pregnant women 18 years and above between 14-28 weeks diagnosed with Vitamin B12 deficiency (Serum Vitamin B12 levels less than 200pg/ml) 
 
ExclusionCriteria 
Details   
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
To compare the effect of oral versus intramuscular vitamin b12 administration on its mean serum levels 3 months post treatment among pregnant women with mild to moderate Vitamin B12 deficiency in second trimester of pregnancy   Comparison of serum Vitamin B12 between the two groups of intervention at 3 months post treatment 
 
Secondary Outcome  
Outcome  TimePoints 
To compare the changes in hematological parameters(hemoglobin, MCV, MCH, MCHC, peripheral smear, platelet count, total leukocyte counts) 3 months post treatment between the groups
To compare the adverse effects between the two groups  
Comparison of hematological parameters between the two groups of intervention at basline, 1 month, 2 month & 3 month post initiation of treatment  
 
Target Sample Size   Total Sample Size="130"
Sample Size from India="130" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   01/10/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="2"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   This study will be conducted in the Department of Obstetrics and Gynaecology, WCH, JIPMER, Puducherry, among pregnant women attending the antenatal outpatient department of admitted to antenatal wards. Women will be enrolled if they meet the inclusion criteria, which includes being aged 18 years or older, having a gestational age between 14-28 weeks and diagnosed with Vitamin B12 deficiency, defined as serum Vitamin B12 levels below 200pg/ml. Those with a history of Impaired intestinal absorption ( gastrectomy, ileal resection, crohn’s disease, radiation induced gastritis), severe neurological symptoms, severe anemia(hb less than 7g/dL), thrombocytopenia (less than 75,000), renal disease, co existing folate deficiency will be excluded. Written informed consent will be obtained in both English and the local language. A detailed medical history, including dietary intake, will be recorded in a standardized proforma along with a dietary questionnaire. Baseline investigations including CBC, peripheral smear, will be conducted. Clinical signs and symptoms of vitamin b12 deficiency will also be documented. Participants will then be randomly assigned in a 1:1 ratio to one of the two treatment groups using a computerised random number generator. An independent person will allocate the sequence. Allocation will be concealed using sequentially numbered opaque sealed envelopes (SNOSE) containing the drug codes. Each women will be administered the drug in the envelope assigned corresponding to her allocation code. Group A will receive 1000micrograms oral cyanocobalamin once daily for 90 days, while group B will recieve intramuscular cyanocobalamin at 1000 microgram daily for 7 days, followed by weekly injections for 6 months, during which CBC, peripheral smear, RBC indices, clinical symptom improvement will be assessed and at the end of 3 months serum vitamin b12 levels will be reassessed . At the end of the study period, data will be analysed for primary outcomes, including serum vitamin b12 normalisation and secondary outcomes such as hematological improvement, resolution of clinical symptoms and treatment adherence. Ethical approval for the study will be obtained from the Institutional Ethics Committee and all the participants will be observed in hospital until discharge. 
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