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NCT Number: NCT07307677

Melatonin & Metformin on Clinical & Biochemical Parameters in Insulin Resistant PCOS Compared to Metformin

Women with polycystic ovary syndrome with HOMA-IR >2.6 fulfilling inclusion and exclusion criteria will be randomly allocated into two groups:experimental group: A (Melatonin 3mg and Metformin 500mg) and control group: B (Metformin 500mg). Each group will be contained 30 selected patients.

Group B:Tab. Metformin (500mg) once daily for 7days followed by twice daily for next 7 days followed by thrice daily for next 10 weeks.

Outcome variables will be measured after three months, will be meticulously recorded for analysis and comparison.

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Key information

Age range

18 year–35 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Bangladesh Medical University

Dhaka, Shahbag, 1000, Bangladesh

Location status: Recruiting

Location contact

Farzana Rahman, MBBS

CONTACT

[email protected]

+8801914229346

Farzana Rahman, MBBS

PRINCIPAL_INVESTIGATOR

Jesmine Banu, MS

SUB_INVESTIGATOR

Mst Sumyara Medical officer, MS

CONTACT

[email protected]

+8801746046581

About this study

After obtaining approval of the Institutional Review Board (IRB), this randomized controlled trial will be conducted at Bangabandhu Sheikh Mujib Medical University (BSMMU). Already diagnosed patients of polycystic ovary syndrome with subfertility with HOMA-IR >2.6 attending in the OPD of Reproductive Endocrinology and Infertility department at BSMMU will be the study population. Women with PCOS fulfilling inclusion and exclusion criteria will be explained in details regarding the objectives, rationality, procedure and potential benefits of the study. The patients will be counselled regarding the drugs and side effects and Informed written consent will be obtained before enrollment.Random allocation will be done using serially numbered closed opaque envelopes. Eligible women will be randomly allocated into two groups:experimental group: A and control group: B. Each group will be contained 30 selected patients.

Group A:Tab. Melatonin (3mg) 3 tablet once daily at night for 12 weeks with Tab. Metformin (500mg) once daily for 7days followed by twice daily for next 7 days followed by thrice daily for next 10 weeks.

Group B:Tab. Metformin (500mg) once daily for 7days followed by twice daily for next 7 days followed by thrice daily for next 10 weeks.

Data will be collected through interviews, physical examinations and laboratory investigations. Prior to commencement of treatment, full assessments including demographic and clinical information and the result of baseline investigations will be undertaken.

Follow up: Participants will come after one month to assess compliance with the regimen and monitor for any potential side effects. A third visit will be scheduled at the end of the third month for a comprehensive assessment. Any adverse events experienced by participants will be carefully noted and documented throughout the study duration. Outcome variables will be measured after three months, will be meticulously recorded for analysis and comparison.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Diagnosed case of PCOS according to Rotterdam criteria
  • Women of age 18-35 years
  • Insulin resistance (HOMA-IR >2.6)

Exclusion criteria

  • BMI: ≤ 18.5 and ≥ 30 kg/m2
  • Uncontrolled endocrine disorders (Diabetis melitus, Hypothyroidism, Hyperprolactinemia)
  • Known case of any medical disease (Renal, hepatic or cardiac disease)
  • Any medication which would affect insulin resistance (Metformin, Myo- inositol, Pioglitazone) in last three months.
  • Hypersensitivity to melatonin.

Treatment and study plan

Metformin 500mg

Drug

Metformin (500mg) once daily for 7days followed by twice daily for next 7 days followed by thrice daily for next 10 weeks

Melatonin 3mg

Combination Product

Melatonin (3mg) 3 tablet single dose at night for 12 weeks and Metformin (500mg) once daily for 7days followed by twice daily for next 7 days followed by thrice daily for next 10 weeks

Primary outcomes

  1. Change in Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)

    Time frame: Baseline to 12 weeks

    HOMA-IR calculated by the following formula:

    HOMA-IR= Fasting glucose (mmol/L) x Fasting insulin mIU/ml divided by 22.5. For the present study HOMA-IR >2.6 can be considered as insulin resistance

Secondary outcomes

  1. Change in Body Mass Index (BMI)

    Time frame: Baseline to 12 weeks

    Body mass index is calculated by dividing the weight in kg by the height in meter square to assess obesity

  2. Change in Waist Circumference

    Time frame: Baseline to 12 weeks

    Waist Circumference is measured in centimeter by placing a tape horizontally midway between the lower border of ribs and iliac crest on the mid axillary line.

Study contacts

Contact information is provided by the study sponsor or research team.

Farzana Rahman, MBBS

CONTACT

[email protected]

+8801914229346

Mst.Sumyara Khatun, MS

CONTACT

[email protected]

+8801746046581

Sponsors and collaborators

Lead sponsor

Mst.Sumyara Khatun

Other

Collaborators

  • Bangladesh Medical University

Registry information

Official study title

Effect of Melatonin and Metformin Combination Therapy on Clinical and Biochemical Parameters inInsulin Resistant Polycystic Ovary Syndrome Compared to Metformin Alone

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Dec 29, 2025
Registry last updated
Jan 7, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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