# A Study to Evaluate the PK and PD of IM or SQ Injections of Levonorgestrel Butanoate (LB) for Female Contraception

> **NCT04143659** · PHASE1 · ACTIVE_NOT_RECRUITING · sponsor: **Premier Research** · enrollment: 136 (estimated)

## Conditions studied

- Healthy Women
- Female Contraception

## Interventions

- **BIOLOGICAL:** levonorgestrel butanoate (LB) injection

## Key facts

- **NCT ID:** NCT04143659
- **Lead sponsor:** Premier Research
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2020-03-03
- **Primary completion:** 2026-03-26
- **Final completion:** 2026-03-26
- **Target enrollment:** 136 (ESTIMATED)
- **Last updated:** 2025-10-29

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04143659

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04143659, "A Study to Evaluate the PK and PD of IM or SQ Injections of Levonorgestrel Butanoate (LB) for Female Contraception". Retrieved via AI Analytics 2026-07-05 from https://api.ai-analytics.org/clinical/NCT04143659. Licensed CC0.

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