Can a fake numbing shot fool patients? scientists find out
NCT ID NCT06668116
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested different dilutions of a numbing drug (ropivacaine) on 17 healthy volunteers to find a dose that feels like a real nerve block but doesn't actually relieve pain. The goal is to create a convincing placebo for future research, so scientists can run fair tests on whether nerve blocks truly help with pain. The study is complete and focused on improving how we design pain trials.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
ropivacaine
What this could lead to
If successful, this could enable better placebo-controlled trials to accurately measure the true effects of nerve blocks for pain management.
What could go wrong
This is a small, early-stage study on healthy volunteers, not patients. The placebo solution may not work as well in real-world pain conditions.
Disclaimer
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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.
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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The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Balgrist University Hospital
Zurich, Canton of Zurich, 8008, Switzerland