# Synthetic vs Natural Estrogen in Combined Oral Contraception

> **NCT02352090** · PHASE4 · COMPLETED · sponsor: **Helsinki University Central Hospital** · enrollment: 59 (actual)

## Conditions studied

- Contraception

## Interventions

- **DRUG:** Ethinyl estradiol / dienogest
- **DRUG:** Estradiol valerate / dienogest
- **DRUG:** Dienogest

## Key facts

- **NCT ID:** NCT02352090
- **Lead sponsor:** Helsinki University Central Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2015-04-01
- **Primary completion:** 2018-12-30
- **Final completion:** 2018-12-30
- **Target enrollment:** 59 (ACTUAL)
- **Last updated:** 2023-06-22

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02352090

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02352090, "Synthetic vs Natural Estrogen in Combined Oral Contraception". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT02352090. Licensed CC0.

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