Skip to content

Effects of Vitamin D, Epigallocatechin Gallate, Vitamin B6, and D-Chiro-inositol Combination on Uterine Fibroids

Effects of Vitamin D, Epigallocatechin Gallate, Vitamin B6, and D-Chiro-inositol Combination on Uterine Fibroids: a Randomized Controlled Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05409872
Acronym
DEFIB
Enrollment
108
Registered
2022-06-08
Start date
2022-09-15
Completion date
2026-04-28
Last updated
2026-05-05

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

Conditions

Leiomyoma, Uterine

Keywords

Leiomyoma, Uterine, Epigallocatechin gallate, Vitamin D, D-Chiro-inositol, Vitamin B6

Brief summary

Randomized (1:1) double-blind, single-center controlled trial to evaluate the efficacy of 3 months of treatment with Epigallocatechin gallate, vitamin D, D-Chiro-inositol, and vitamin B6 on symptoms related to uterine fibroids

Detailed description

A randomized controlled trial aimed to evaluate the efficacy of a combination of Epigallocatechin gallate, vitamin D3, D-Chiro-inositol, and vitamin B6 as a treatment for uterine fibroids. The clinical study is double-blind, neither patients nor investigators know whether the subject receives the combination of Epigallocatechin gallate, vitamin D, D-Chiro-inositol, and vitamin B6 or the placebo. After 3 months of treatment, changes in symptoms associated with uterine fibroids, quality of life, and ultrasounds characteristics are compared between the two treatment arms.

Interventions

DIETARY_SUPPLEMENTCombination of Epigallocatechin gallate, vitamin D, vitamin B6, and D-Chiro-inositol

The subject takes a combination of 333.35 mg of green tea extract (150 mg of Epigallocatechin gallate), 25 mg of D-Chiro-inositol, 25 mcg of Vitamin D, and 5 mg of Vitamin B6 twice a day for three months.

OTHERPlacebo

The subject takes the placebo twice a day for three months.

Sponsors

Universita di Verona
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Randomized (1:1) double-blind, single-center controlled trial

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Women with multiple fibroids or single fibroma with a diameter ≥ 4 cm who are candidates for hysterectomy. * Women with multiple fibroids or single fibroma with a diameter ≥ 4 cm who are candidates for myomectomy / uterine arterial embolization. * Women with multiple fibroids or single fibroma with a diameter ≥ 4 cm who are candidates for treatment with magnetic resonance (MR)-guided Focused Ultra-Sound (MrgFUS).

Exclusion criteria

* Pregnancy. * Breastfeeding. * Smoking. * Suspected malignancy. * Patients who have undergone medical treatment for uterine fibroids within the previous three months. * Patients allergic to the components of the product or placebo under study. * Patients who refuse to provide informed consent to participate in the study.

Design outcomes

Primary

MeasureTime frameDescription
Symptoms related to uterine fibromatosis (UFS-QoL questionnaire)After 3 months of treatmentSymptoms related to uterine fibromatosis assessed with the eight symptom questions of the Fibroid Symptom and Quality of Life (UFS-QoL) questionnaire. Score: min 8 - max 40, with higher scores meaning worse outcome.

Secondary

MeasureTime frameDescription
The proportion of patients who refuse surgery due to regression of symptoms.After 3 months of treatmentThe proportion of patients who refuse surgery due to regression of symptoms.
Volume of the larger fibroidAfter 3 months of treatmentVolume of the larger fibroid assessed by transvaginal ultrasound
Quality of life (UFS-QoL questionnaire)After 3 months of treatmentQuality of life assessed with the 29 health-related quality of life questions of the Fibroid Symptom and Quality of Life (UFS-QoL) questionnaire. Score: min 29 - max 145, with higher scores meaning worse outcome.
The total score obtained in the Menstrual assessment chartAfter 3 months of treatmentThe total score obtained in the Menstrual assessment chart. Score: min 0 - N/A max, with higher scores meaning worse outcome.
The total score obtained in the Pad testAfter 3 months of treatmentThe total score obtained in the Pad test. Score: min 0 - N/A max, with higher scores meaning worse outcome.
Proportion of patients who reported side effects or who stopped taking the treatmentAfter 3 months of treatmentProportion of patients who reported side effects or who stopped taking the treatment

Countries

Italy

Contacts

PRINCIPAL_INVESTIGATORStefano Uccella, MD, PhD

AOUI Verona - University of Verona

PRINCIPAL_INVESTIGATORSimone Garzon, MD

AOUI Verona - University of Verona

PRINCIPAL_INVESTIGATORPier Carlo Zorzato, MD

AOUI Verona - University of Verona

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 6, 2026