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CTRI Number  CTRI/2025/04/085862 [Registered on: 28/04/2025] Trial Registered Prospectively
Last Modified On: 28/04/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   To understand the Efficacy and safety of Varenicline, Bupropion and Nicotine Replacement Therapy for Smokeless Tobacco Cessation in India: A Randomized Controlled Trial  
Scientific Title of Study   Evaluating the Effectiveness and safety of Varenicline over Bupropion and Nicotine Replacement Therapy for Smokeless Tobacco Cessation in India: A Randomized Controlled Trial  
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
RD/AIIMS/Pat/2024/RAC/72  Other 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Sambhu Prasad 
Designation  Associate Professor 
Affiliation  All India Institute of Medical Sciences Patna Bihar 
Address  Department of Psychiatry AIIMS Patna
Phulwarisharif AIIMS Patna
Patna
BIHAR
801507
India 
Phone  08427016592  
Fax    
Email  sambhu3011@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sambhu Prasad 
Designation  Associate Professor 
Affiliation  All India Institute of Medical Sciences Patna Bihar 
Address  Department of Psychiatry AIIMS Patna
Phulwarisharif AIIMS Patna

BIHAR
801507
India 
Phone  08427016592  
Fax    
Email  sambhu3011@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Sambhu Prasad 
Designation  Associate Professor 
Affiliation  All India Institute of Medical Sciences Patna Bihar 
Address  Department of Psychiatry AIIMS Patna
Phulwarisharif AIIMS Patna

BIHAR
801507
India 
Phone  08427016592  
Fax    
Email  sambhu3011@gmail.com  
 
Source of Monetary or Material Support  
Department of Psychiatry AIIMS Patna, Phulwarisharif, Patna, Bihar, India. Pin- 801507 
 
Primary Sponsor  
Name  All India Institute of Medical Sciences Patna 
Address  Department of Psychiatry AIIMS Patna, Phulwarisharif, Patna, Bihar, India. Pin- 801507 
Type of Sponsor  Research institution and hospital 
 
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 
Dr Sambhu Prasad  All India Institute of Medical Sciences Patna  Department of Psychiatry AIIMS Patna Phulwarisharif Patna Bihar Pin 801507
Patna
BIHAR 
8427016592

sambhu3011@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee AIIMS Patna  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: F172||Nicotine dependence,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Bupropion group   Tab Bupropion standard dose as per clinical practice guideline and manual guided psychosocial intervention (weekly session for 12 week)  
Comparator Agent  Nicotine Replacement Treatment group  Nicotine Replacement Treatment as per clinical practice guideline plus manual guided psychosocial intervention (weekly session for 12 week) 
Intervention  Varenicline group  Tad Varnicline standard dose shedule as per guideline plus manual guided psychosocial intervention (weekly session for 12 week)  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Use of smokeless tobacco each day for the past year (confirmed with urinary cotinine assessment greater than or equal to 50 ng/ml)

The age over 18 years

Residing within 120 KM of Patna  
 
ExclusionCriteria 
Details  Current cigarette use which is confirmed with breath carbon monoxide level greater than 10 ppm

Current or planned use of tobacco cessation treatment

Current use of cocaine, marijuana, or opioids or current consumption of greater than or equal to 25 alcoholic drinks per week

Current or recent use of psychiatric, pain, or asthma medications

Current pregnancy or lactation

History or current diagnosis of psychosis, schizophrenia, bipolar disorder, or suicidality

Current diagnosis of depression; diagnosis of cancer, heart disease, or HIV or AIDS in past 6 months

History of epilepsy or seizures

History or diagnosis within the last 6 months of abnormal heart rhythms and or tachycardia which is greater than 100 beats per min

History or current diagnosis of chronic obstructive pulmonary disease, cardiovascular disease, heart attack in the last 6 months, and uncontrolled hypertension in which systolic blood pressure greater than 150 or diastolic blood pressure greater than 90

History of kidney or liver failure
 
 
Method of Generating Random Sequence   Permuted block randomization, variable 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Participant, Investigator, Outcome Assessor and Date-entry Operator Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare the efficacy of Varenicline, Bupropion, and Nicotine Replacement Therapy (NRT) in achieving smokeless tobacco cessation among users in India, measured by self-reported and biochemically verified abstinence rates at the end of treatment and during follow-up periods
 
12 weeks 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate the cessation success rates among smokeless tobacco users treated with Varenicline, Bupropion, and NRT, considering both the end of treatment and follow-up periods, to determine the sustainability of cessation.
 
12 weeks 
To assess the impact of medication adherence rates on the effectiveness of Varenicline, Bupropion, and NRT in facilitating tobacco cessation, identifying adherence as a potential mediator of treatment success.
 
12 weeks 
To compare the incidence of side effects and serious adverse events among smokeless tobacco users undergoing treatment with Varenicline, Bupropion, and NRT to assess the safety profiles of these pharmacotherapies.
 
12 weeks 
To investigate the effect of Varenicline, as compared to Bupropion and NRT, on reducing cravings for smokeless tobacco and enhancing the likelihood of recovery to abstinence following a lapse, highlighting its potential advantages in managing relapse.
 
12 weeks 
 
Target Sample Size   Total Sample Size="84"
Sample Size from India="84" 
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   Phase 3/ Phase 4 
Date of First Enrollment (India)   15/05/2025 
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 Applicable 
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 - YES
  1. What data in particular will be shared?
    Response - Individual participant data that underlie the results reported in this article, after de-identification (text, tables, figures, and appendices).

  2. What additional supporting information will be shared?
    Response -  Study Protocol
    Response -  Statistical Analysis Plan

  3. Who will be able to view these files?
    Response - Researchers whose proposed use of the data has been approved by an independent review committee identified for this purpose.

  4. For what types of analyses will this data be available?
    Response - To achieve aims in the approved proposal.

  5. By what mechanism will data be made available?
    Response (Others) -  Under the permission from Ethical committee of the Institute

  6. For how long will this data be available start date provided 15-05-2026 and end date provided 14-04-2027?
    Response - Beginning 9 months and ending 36 months following article publication.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - NIL
Brief Summary  
Smokeless tobacco (SLT) use, a form of tobacco consumed without combustion/burning, has become a global health issue with about 350 million users, maximally seen in the South-East Asian Region. Its use is associated with a myriad of adverse effects. Around 40% of the total economic cost because of tobacco use occurs in low- and middle-income countries (LMICs), and 25% is accounted for by Brazil, Russia, India, and China alone. India is the second largest consumer (current use- 48% males, 20% females; 275 million adults), and third largest producer of tobacco in the world. It has one of the highest mortality rates related to tobacco (~0.9 million of the 6 million annual deaths globally). The treatment gap for tobacco use in India is as high as 92%.The behavioral interventions have been found to be efficacious for reducing smokeless tobacco dependence when tested in clinical trials (quit rates in such trials rarely exceed 15%). Clinical trials of nicotine replacement therapies (NRTs) have shown efficacy on short-term cessation. Further, clinical trials testing other NRTs and bupropion have not yielded positive results. In contrast, a large placebo controlled trial in Scandinavia found that varenicline was efficacious for smokeless tobacco dependence , and a  pilot trial in the northern India reported preliminary support for an additional large clinical trial evaluation of varenicline for smokeless tobacco users in the India considering the potential lower effect size and lower medication adherence rates in this population.iven that varenicline is relatively more effective for treating tobacco smoking than NRT  and bupropion and that varenicline significantly reduces craving to use smokeless tobacco, varenicline may be efficacious for treating smokeless tobacco dependence in India
 
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