New drug combo could replace ibuprofen for Post-Surgery pain
NCT ID NCT07620665
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two pain relief combinations after minimally invasive gallbladder removal: opiranserin plus acetaminophen versus ibuprofen plus acetaminophen. 88 adults will be randomly assigned to one of the two groups. The goal is to see if the new combination controls pain just as well as the standard one.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- opiranserin plus acetaminophen
- What this could lead to
- If it works, this could offer a new pain relief option after gallbladder surgery that avoids NSAIDs.
- What could go wrong
- This is a small, early-stage trial with only 88 people, so results may not apply to everyone. It is designed to show non-inferiority, not superiority, so it may not prove opiranserin is better.
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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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 88 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 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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19 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Adult patient undergoing minimally invasive cholecystectomy Exclusion Criteria: * Known hypersensitivity or allergy to acetaminophen, NSAIDs, opiranserin, or fentanyl. * pre-existing chronic pain, * clinically significant ECG findings (QRS \> 200 msec, QTcF \>450 msec) * severe renal impairment * severe hepatic impairment
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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
2 sites. 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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Gangnam Severance Hospital
NOT_YET_RECRUITINGSeoul, 06273, South Korea
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Gangnam Severance Hospital
RECRUITINGSeoul, 06273, South Korea
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