Blue dye may ease pain after hemorrhoid surgery, new study finds
NCT ID NCT07164807
First seen Nov 01, 2025 · Last updated May 24, 2026 · Updated 33 times
Summary
This study tests whether adding methylene blue (a blue dye) to a standard numbing medicine (ropivacaine) can better control pain after hemorrhoid surgery. About 177 adults with severe hemorrhoids will receive different doses of the mixture right after surgery. Researchers will track pain levels, painkiller use, and quality of life for one month to find the safest and most effective dose.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Affiliated Hospital of Putian University
Putian, China
Conditions
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