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Investigating the effect of Vitamin D supplement consumption on size of uterine fibroids

Investigating the effect of Vitamin D supplement consumption on size of uterine fibroids in women referred to Kowsar educational and treatment center in Qazvin: a randomized clinical trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20251001067445N1
Enrollment
80
Registered
2025-10-15
Start date
2025-08-30
Completion date
Unknown
Last updated
2025-12-08

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

Conditions

fibrom. Leiomyoma of uterus, unspecified

Interventions

Intervention 1: Intervention group: Demographic characteristics of patients (age, weight, BMI, reason for referral) will be recorded. Then, initial hemoglobin level and initial serum vitamin D3 level

Sponsors

Qazvin University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1- Confirmation of the presence of at least one fibroid measuring 20-80 mm on abdominal or vaginal ultrasound by a radiologist Serum vitamin D level of 20-30 ng/ml

Exclusion criteria

Exclusion criteria: History of hormonal medication use uterine fibroid treatment in the past 3 months history of vitamin D supplementation in the past 6 months severe vaginal bleeding adenomyosis evidence of malignancy menopause metabolic diseases lack of follow-up visits sensitivity to vitamin D desire to become pregnant inability to follow up

Design outcomes

Primary

MeasureTime frame
Fibroid size. Timepoint: Before the start of the intervention and after 4 and 8 weeks from the start of the intervention. Method of measurement: Ultrasound and testing.;Number of fibroids. Timepoint: Before the start of the intervention and after 12 months from the start of the intervention. Method of measurement: Ultrasound.;Hemoglobin level. Timepoint: Beginning of the intervention and end of the intervention. Method of measurement: Test.;Vitamin D3 levels. Timepoint: Beginning of the intervention and end of the intervention. Method of measurement: test.;Age. Timepoint: Beginning of the intervention. Method of measurement: Hospital Information System.;Pelvic pain (dysmenorrhea, menorrhagia). Timepoint: Beginning of the intervention and end of the intervention. Method of measurement: Clinical examination.;Urinary symptoms. Timepoint: Beginning of the intervention and end of the intervention. Method of measurement: Clinical examination.;BMI. Timepoint: Beginning of the intervention. Method of measurement: Scales and meters.;Location of fibroids. Timepoint: Beginning of the intervention and end of the intervention. Method of measurement: Ultrasound.;Age of onset of menarche. Timepoint: Beginning of the intervention. Method of measurement: Question.;Side effects of vitamin D. Timepoint: Start of intervention, 4 and 8 weeks after intervention, and at the end of the study. Method of measurement: Clinical examination.

Secondary

MeasureTime frame
Fibroid size. Timepoint: First and last reading. Method of measurement: Ultrasound.;Number of fibroids. Timepoint: First and last reading. Method of measurement: Ultrasound.;Hemoglobin level. Timepoint: First and last reading. Method of measurement: test.;Vitamin D3 levels. Timepoint: First and last reading. Method of measurement: TEST.

Countries

Iran (Islamic Republic of)

Contacts

Public Contactfatemeh moghadam

Qazvin University of Medical Sciences

omid.khosravizadeh@gmail.com+98 919 286 1640

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026