Combined Oral Contraceptive Pill Study

Are you looking for a new form of birth control?

Estetra Study Photo

We are working to learn more about a new combined oral contraceptive (COC) or birth control pill. We want to study how well this particular pill will work at preventing pregnancy. This study will also assess the safety of the pill and how the pill effects your menstrual cycle. This pill contains progestin and estrogen, similar to many other combined oral contraceptive pills. However, this pill contains a new synthetic form of estrogen called Estetrol. Previous studies have suggested that in combination with progestin, this estrogen may result in more regular and predictable menstrual cycles, as well as period that are lighter and shorter. 


Purpose of this study

To learn about how effective an investigational birth control pill is at preventing pregnancy. 



To qualify for this study, you must be:

  • At risk for pregnancy
  • Between 16 and 50 years of age
  • Willing to use a hormonal contraceptive pill as your only form of birth control during the 12 month study
  • In good mental and physical health


Qualified participants will be compensated up to $850 for time and travel for this study. Study participation will last approximately 13 months and will include up to 7 visits to the OHSU Marquam Hill campus within that time.

Who do I contact for additional information?

To find out more information and to learn if you are qualified to participate, fill out the online form (see the green box below), call the Women’s Health Research Unit's confidential recruitment line, or email us at .

Complete the online form or call 503-494-3666