# Safety and Efficacy of CDB-2914 in Comparison to Levonorgestrel for Emergency Contraception

> **NCT00551616** · PHASE3 · COMPLETED · sponsor: **HRA Pharma** · enrollment: 2221 (actual)

## Conditions studied

- Contraception

## Interventions

- **DRUG:** CDB-2914
- **DRUG:** Levonorgestrel

## Key facts

- **NCT ID:** NCT00551616
- **Lead sponsor:** HRA Pharma
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-04
- **Primary completion:** 2009-04
- **Final completion:** 2009-04
- **Target enrollment:** 2221 (ACTUAL)
- **Last updated:** 2022-05-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00551616

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00551616, "Safety and Efficacy of CDB-2914 in Comparison to Levonorgestrel for Emergency Contraception". Retrieved via AI Analytics 2026-08-24 from https://api.ai-analytics.org/clinical/NCT00551616. Licensed CC0.

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