Skip to content

Comparing metformin, an herbal capsule (fennel, vitex, and carrot seed), and their combination for treating infrequent menstrual periods in women with polycystic ovary syndrome (PCOS): a randomized double-blind trial

Evaluation of effect of metformin in combination with aslagh capsule (Herbal supplement) and combination of metformin & aslagh capsules on oligomenorrhea and lipid & glucose profiles in patients with polycystic ovary syndrome

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ITMCTR
Registry ID
ITMCTR2026000266
Enrollment
Unknown
Registered
2026-02-03
Start date
2023-09-23
Completion date
Unknown
Last updated
2026-03-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Polycystic Ovary Syndrome (PCOS)

Interventions

Metformin group:Metformin 500 milligrams orally once daily for 12 weeks
Herbal capsule group:Standardized herbal capsule 500 milligrams orally once daily for 12 weeks (equal parts Foeniculum vulgare, Vitex agnus-castus, and Daucus carota)
Combination therapy group:Metformin 500 milligrams plus standardized herbal capsule 500 milligrams orally once daily for 12 weeks

Sponsors

Vice-Chancellor in Research Affairs, Shahid Beheshti University of Medical Sciences (SBMU)
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: Eligible participants were women aged 18–45 years who met the Rotterdam diagnostic criteria for polycystic ovary syndrome, had oligomenorrhea defined as a menstrual interval >35 days, were non-smokers, provided written informed consent, and had not used PCOS-related medications within the previous 6 months. Participants were required to have no pregnancy, no abortion or postpartum status within the prior 6 weeks, no breastfeeding, and no use of hormonal drugs within the previous month. To avoid secondary causes of hyperandrogenism or hyperinsulinemia, women with diabetes mellitus, Cushing's syndrome, congenital adrenal hyperplasia, hyperprolactinemia, or thyroid dysfunction were not eligible; women with blood pressure disease and those with a family history of breast or ovarian cancer were also excluded at screening.

Exclusion criteria

Exclusion criteria: Participants were excluded if they were unwilling to continue or did not adhere to the protocol, had apparent diabetes or diagnosed hypo/hyperthyroidism on pre-study testing, used oral contraceptive pills or other hormonal therapies during the study period, required ovulation induction/egg stimulation or infertility interventions, had hyperprolactinemia, required other medical interventions or surgery, became pregnant during follow-up, or developed severe adverse drug reactions classified as CTCAE grade 3–5 during the 12-week intervention.

Design outcomes

Primary

MeasureTime frame
Menstrual cycle interval;Serum luteinizing hormone concentration;Fasting serum insulin concentration;Insulin resistance;

Secondary

MeasureTime frame
Total cholesterol concentration;High-density lipoprotein cholesterol concentration;Low-density lipoprotein cholesterol concentration;Triglyceride concentration;Right ovary dimension;Left ovary dimension;Right ovarian artery resistance index;Left ovarian artery resistance index;Hirsutism score;Acne severity;Menstrual bleeding duration ;Menstrual bleeding volume;

Countries

Iran

Contacts

Public ContactMojgan Tansaz

Department of Traditional Medicine, School of Traditional Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran

tansaz_mojgan@yahoo.com+982188773521

Outcome results

None listed

Source: ITMCTR (via WHO ICTRP) · Data processed: Mar 14, 2026