# Study of the Safety, Efficacy and Cycle Control of a Contraceptive Vaginal Ring

> **NCT00455156** · PHASE3 · COMPLETED · sponsor: **Premier Research** · enrollment: 1200 (actual)

## Conditions studied

- Contraception

## Interventions

- **DRUG:** 150 mg of Nestorone and 15 mg of ethinyl estradiol (150/15 NES/EE CVR)

## Key facts

- **NCT ID:** NCT00455156
- **Lead sponsor:** Premier Research
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2006-12
- **Primary completion:** 2009-01
- **Final completion:** 2011-09
- **Target enrollment:** 1200 (ACTUAL)
- **Last updated:** 2026-01-23

## Collaborators

- Population Council
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00455156

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00455156, "Study of the Safety, Efficacy and Cycle Control of a Contraceptive Vaginal Ring". Retrieved via AI Analytics 2026-08-20 from https://api.ai-analytics.org/clinical/NCT00455156. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*