Blue dye could ease pain after hemorrhoid surgery
NCT ID NCT07164807
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tests whether adding methylene blue to a standard painkiller can reduce pain after hemorrhoid surgery. About 177 adults with severe hemorrhoids will receive one of two doses of methylene blue plus ropivacaine. Researchers will track pain scores, painkiller use, and quality of life for one month after surgery.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
methylene blue combined with ropivacaine
What this could lead to
If it works, this could provide a better way to manage pain after hemorrhoid surgery, reducing the need for strong painkillers.
What could go wrong
This is a small, early-phase trial with only 177 people. The results may not apply to everyone, and there is a risk of side effects like skin irritation or allergic reactions.
Disclaimer
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the original study
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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.
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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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.
Contacts and locations
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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