Evaluating a new injection for female contraception without estrogen

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

NIH-funded research University of Utah · NIH-11041792

This study is testing a new long-lasting birth control shot called levonorgestrel butanoate, especially for women who are overweight and may have a higher risk of blood clots, to see if it’s a safer and easier option than daily pills.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionUniversity of Utah NIH-funded
Lab location1 site (Salt Lake City, United States)
Project IDNIH-11041792 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 provide an easier-to-follow contraceptive option compared to traditional progestin-only pills, which require strict daily adherence. By focusing on an estrogen-free formulation, the research seeks to enhance safety and efficacy in contraception for women who may be at higher risk due to their weight. Participants will be involved in a clinical trial to assess the effectiveness and safety of this new contraceptive method.

Who could benefit from this research

Good fit: Ideal candidates for this research are women, particularly 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 VTE 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, especially those at risk for VTE.

How similar studies have performed: Previous research has shown success with other long-acting contraceptive methods, but this specific formulation is novel and aims to address a unique patient population.

Where this research is happening

Salt Lake City, 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.