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Period Pills for Menstrual Regulation: A New Reproductive Health Option
RecruitingPhase 4Healthy volunteers welcome
Who can join
Ages 18 and older · Women · Healthy volunteers welcome
Full eligibility criteria
Inclusion Criteria: * Be 18 years old or older * Read and speak English * Know the date of their last menstrual period within 2 days * Have a period that is late by up to 21 days * Must have had regular periods in the last 4 months * Does not want to be pregnant * Does not want to verify pregnancy status * Understand that if they are pregnant, the pills will end their pregnancy * Does not have contraindications to mifepristone and misoprostol (Risk factors for ectopic pregnancy; history of bleeding disorder or anticoagulant therapy; history of chronic adrenal failure, long-term corticosteroid therapy; allergy to mifepristone/misoprostol/prostaglandins; history of hemorrhagic disorders or anticoagulant therapy; history of inherited porphyrias; has an IUD; currently use a contraceptive implant or injectable) Exclusion Criteria: * Under 18 years old * Does not read and speak English * Does not know the date of their last menstrual period within 2 days * Has not had regular periods in the last 4 months * Wants to be pregnant * Wants to verify pregnancy status * Does not display understanding that if they are pregnant, the pills will end their pregnancy * Has any contraindications to mifepristone and misoprostol (Risk factors for ectopic pregnancy; history of bleeding disorder or anticoagulant therapy; history of chronic adrenal failure, long-term corticosteroid therapy; allergy to mifepristone/misoprostol/prostaglandins; history of hemorrhagic disorders or anticoagulant therapy; history of inherited porphyrias; has an IUD; currently use a contraceptive implant or injectable)
About the study
The Period Pills Study is a prospective observational study among people who decide to use a combination of mifepristone and misoprostol for menstrual regulation.
What is being tested
- Mifepristone + Misoprostol (drug)
Sponsor: University of California, San Francisco · Participants: 100 · Started: Jun 22, 2026
Contact the study team
- Ushma D Upadhyay, PhD, MPH · Phone: 415-353-4626
- Jennifer Ko, MLIS · Phone: 415-353-9113
Official record on ClinicalTrials.gov — NCT07671989
Locations in the U.S.
| Virginia | Roanoke Health Center, Roanoke |
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.