Birth Control Patch

A progesterone birth control patch is a skin patch that delivers a steady dose of synthetic progesterone (progestin) into the bloodstream to help prevent pregnancy. It works by thickening cervical mucus to block sperm, thinning the uterine lining to prevent implantation, and sometimes stopping ovulation. Unlike combined hormone patches that contain both estrogen and progestin, a progestin-only patch may be suitable for individuals who cannot use estrogen due to health risks. The patch is typically worn on the skin and replaced on a regular schedule—often weekly. Researchers are currently studying new versions of progesterone-only patches to expand birth control options for more people.

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About the Study

Testing a progestin-only birth control patch for women

  • The patch is worn on the skin for a year and changed once a week

  • The study will track how well it prevents pregnancy and how well it’s tolerated

Who is it for?

  • Women aged 16 or older

  • Have regular menstrual periods

  • Sexually active and at risk of pregnancy

  • Not currently using other hormonal birth control

Benefits for participants

  • Free patch, exams, and lab work during the study

  • May be a good option for those who can’t take estrogen

  • No-cost access to a potential new birth control method

  • Regular check-ins with experienced medical staff

  • May receive reimbursement for time and travel

  • Helping advance future birth control options

  • Possible side effects include skin irritation, spotting, or mild hormonal symptoms

  • All participants are closely monitored for safety throughout the study








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