Hormone pill may block bad memories after trauma
NCT ID NCT07419594
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a single dose of estradiol (a hormone) can reduce the number of intrusive, unwanted memories that form after a traumatic event. Healthy female volunteers will watch a stressful film and then record any intrusive memories over the next four days. The goal is to understand how hormones affect memory formation, which could lead to new ways to prevent PTSD.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 273 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2024
- Expected to finish
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Feb 2028
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 to 45 years
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * healthy female volunteers * German on B1 level Exclusion Criteria: * former or present disorder according to the Diagnostic and Statistical Manual of Mental Disorders 5 (DSM-5) * any physical illnesses * any medication intake (except oral contraceptive) * history of traumatic experience, e.g. history of sexual abuse or rape * pregnancy or lactation period * intake of oral contraceptives * follicular phase of menstrual cycle
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Conditions
The condition(s) this trial relates to.
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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Charité - Universitätsmedizin Berlin
RECRUITINGBerlin, State of Berlin, 12203, Germany
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Other studies related to the condition(s) this trial covers.
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