New 'Period Pills' could let you skip the pregnancy test
NCT ID NCT07671989
First seen Jun 26, 2026 · Last updated Sep 03, 2026 · Updated 2 times
Summary
This study tests a two-pill combination (mifepristone and misoprostol) to bring on a late period without first confirming pregnancy. It involves 100 people who are at least 18, have regular periods, and are up to 21 days late. Participants take the pills and report satisfaction and whether their period returns within 4 weeks.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Mifepristone and misoprostol (a two-pill combination to bring on a late period)
- What this could lead to
- If successful, this could offer a new, more private option for people to manage a late period at home without needing to confirm pregnancy first.
- What could go wrong
- This is a small, early-phase study (100 people) and the pills may not always work. Also, if someone is pregnant, these pills will end the pregnancy, which may not be what they want.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2026
- Expected to finish
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May 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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)
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Roanoke Health Center
RECRUITINGRoanoke, Virginia, 24017, United States
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UCSF Advancing New Standards in Reproductive Health (ANSIRH)
ACTIVE_NOT_RECRUITINGOakland, California, 94612, United States
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