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CTRI Number  CTRI/2025/12/098427 [Registered on: 03/12/2025] Trial Registered Prospectively
Last Modified On: 10/01/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study
Modification(s)  
Drug 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A study comparing the effect of Thiamidol cream and triple combination therapy in reducing pigmentation among Melasma patients  
Scientific Title of Study   Efficacy of topical isobutylamido thiazolyl resorcinol (thiamidol) compared to triple combination therapy in patients with melasma a prospective study 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
Nil  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Bandreddy Peranti 
Designation  Post graduate resident  
Affiliation  Alluri Sitarama Raju Academy of Medical Sciences 
Address  Room no- 115 Krishna block Alluri Sitarama Raju academy of medical sciences malkapuram Eluru Andra pradhesh 534005

West Godavari
ANDHRA PRADESH
534005
India 
Phone  9398752811  
Fax    
Email  perantibandreddy@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr. Nirupama Bhagya Lakshmi Tatavarthi  
Designation  Professor and HOD MD DVL 
Affiliation  Department of DVL ASRAM Hospital  
Address  Room no 118 DEPARTMENT OF DVL 1st floor ASRAM HOSPITAL MALKAPURAM ELURU

West Godavari
ANDHRA PRADESH
534005
India 
Phone  9553164588  
Fax    
Email  niruluckee@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Bandreddy Peranti 
Designation  Post graduate resident  
Affiliation  Alluri Sitarama Raju Academy of Medical Sciences 
Address  Room no- 115 Krishna block Alluri Sitarama Raju academy of medical sciences malkapuram Eluru Andra pradhesh 534005

West Godavari
ANDHRA PRADESH
534005
India 
Phone  9398752811  
Fax    
Email  perantibandreddy@gmail.com  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  Dr Bandreddy Peranti 
Address  Room no- 115 Krishna block Alluri Sita Rama Raju academy of medical sciences malkapuram Eluru,Andra pradhesh 534005 
Type of Sponsor  Other [Self] 
 
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 Bandreddy Peranti   ASRAM Hospital affiliated to Alluri Sitarama Raju Academy of Medical Sciences  Room no 118 Department of DVL Malkapuram Eluru Andhra pradhesh 534005
West Godavari
ANDHRA PRADESH 
9398752811

perantibandreddy@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
ASRAMS BHR Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: L814||Other melanin hyperpigmentation, (2) ICD-10 Condition: L818||Other specified disorders of pigmentation, (3) ICD-10 Condition: L818||Other specified disorders of pigmentation,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Topical Thiamidol   Topical Thiamidol is applied once daily for 12 weeks Clinical assessment will be done after every session of the treatment at 4weeks 8 weeks 12 weeks using MODIFIED MELASMA AREA AND SEVERITY INDEX SCORING and it will be compared with the baseline score 
Comparator Agent  Triple combination therapy  Topical Triple combination therapy is given once daily for 12 weeks. Clinical assessment will be done after every session of the treatment at 4weeks 8 weeks12 weeks using MODIFIED MELASMA AREA AND SEVERITY INDEX SCORING and it will be compared with the baseline score 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  All females and males with Melasma aged above18 years
Patients who are not on any other treatment for Melasma for past 1 month and patients who are advised to stop treatment for 1month
Patients unresponsive to regular topical agents
 
 
ExclusionCriteria 
Details  Allergy or sensitivity to Thiamidol
Active skin conditions or infections like eczema, dermatitis in the treatment area
Recent laser or light based therapies
Pregnancy and lactation 
 
Method of Generating Random Sequence
Modification(s)  
Computer generated randomization 
Method of Concealment
Modification(s)  
Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking
Modification(s)  
Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Efficacy of topical Thiamidol compared to triple combination therapy in patients with Melasma. Reduction in mMASI score indicating improvement in melasma severity  Clinical assessment was performed using the Modified Melasma Area and Severity Index mMASI at baseline 4 weeks 8 weeks and 12 weeks 
 
Secondary Outcome  
Outcome  TimePoints 
The secondary outcomes included the evaluation of side effects and patient tolerance to each therapy
 
Clinical assessment was performed using the Modified Melasma Area and Severity Index mMASI at baseline 4 weeks 8 weeks and 12 weeks  
 
Target Sample Size   Total Sample Size="68"
Sample Size from India="68" 
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)   02/01/2026 
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="1"
Months="6"
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 - NO
Brief Summary  

The trial has not begun enrolling patients 

Melasma is a pigmentary disorder that affects middle aged women more commonly presents as hyperpigmented irregular macules patches on sun exposed areas like cheeks upper lip chin  nasal bridge forehead and the neck

 It is a stubborn condition which is more prone to relapse  It has a complex etiology like exposure to Ultraviolet radiations pregnancy oral contraceptive pills Hormone replacement therapy etc


Various studies used multiple treatment modalities including topically applied depigmenting agents like hydroquinone alone triple combination therapy cysteamine chemical peels glycolic acid and laser therapy with none of them showing satisfactory outcomes

Thiamidol is now being identified as a new potent inhibitor of human tyrosinase enzyme


This  study titled Efficacy of Topical Isobutylamido Thiazolyl Resorcinol Thiamidol Compared to Triple Combination Therapy in patients with Melasma  over 18 months The study aims to compare the therapeutic efficacy and safety of topical Thiamidol with the conventional triple combination therapy in patients with melasma

A total of 68 patients clinically diagnosed with melasma will be randomly divided into two groups Group A  will be treated with topical Thiamidol
Group B will be treated with triple combination therapy

Clinical assessment will be done by using the Modified Melasma Area and Severity Index mMASI at baseline 4 weeks 8 weeks and 12 weeks Clinical photographs will be taken at each time point under standardized conditions Data will be analyzed using paired and unpaired t tests

The primary outcome will be the change in mMASI score from baseline to 12 weeks which will indicate treatment efficacy The secondary outcomes will include the evaluation of side effects and patient tolerance to each therapy


 
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