# The Effect of Grape Seed Extract on Estrogen Levels of Postmenopausal Women

> **NCT00566553** · NA · COMPLETED · sponsor: **Mayo Clinic** · enrollment: 39 (actual)

## Conditions studied

- Breast Cancer

## Interventions

- **DIETARY_SUPPLEMENT:** Grape Seed Extract
- **DIETARY_SUPPLEMENT:** Grape Seed Extract
- **DIETARY_SUPPLEMENT:** Grape Seed Extract
- **DIETARY_SUPPLEMENT:** Grape Seed Extract

## Key facts

- **NCT ID:** NCT00566553
- **Lead sponsor:** Mayo Clinic
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-02
- **Primary completion:** 2011-09
- **Final completion:** 2011-09
- **Target enrollment:** 39 (ACTUAL)
- **Last updated:** 2012-01-06


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00566553

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00566553, "The Effect of Grape Seed Extract on Estrogen Levels of Postmenopausal Women". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00566553. Licensed CC0.

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