Evaluating a new injection for estrogen-free female contraception

CCTN-PHARMACOKINETIC / PHARMACODYNAMIC EVALUATION OF LEVONORGESTREL BUTANOATE FOR FEMALE CONTRACEPTION - OREGON

NIH-funded research Oregon Health & Science University · NIH-11042052

This study is testing a new long-lasting birth control shot called levonorgestrel butanoate, which is made especially for women, especially those who are overweight and at risk for blood clots, to see if it works well and is safe as an alternative to regular birth control pills.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionOregon Health & Science University NIH-funded
Lab location1 site (Portland, United States)
Project IDNIH-11042052 on NIH RePORTER

What this research studies

This research investigates a new long-acting injectable contraceptive called levonorgestrel butanoate (LB), designed specifically for women, particularly those who are obese and at risk for venous thromboembolism (VTE). The study aims to assess the pharmacokinetics and pharmacodynamics of LB to determine its effectiveness and safety as an alternative to traditional estrogen-containing contraceptives. By focusing on an estrogen-free option, the research seeks to provide a more accessible and safer contraceptive method for women who may struggle with adherence to daily pills. Participants will be involved in a clinical trial that evaluates how well this new formulation works in preventing pregnancy.

Who could benefit from this research

Good fit: Ideal candidates for this research are women, especially those who are obese and seeking effective contraception without the risks associated with estrogen.

Not a fit: Patients who are not seeking contraception or those who do not have concerns related to estrogen use may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could provide a safer and more convenient contraceptive option for women, particularly those at higher risk for VTE.

How similar studies have performed: Previous research has shown success with other long-acting contraceptive methods, indicating potential for this novel approach.

Where this research is happening

Portland, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.