Heart risk from headache drug under the microscope
NCT ID NCT04406259
First seen Jan 11, 2026 · Last updated May 22, 2026 · Updated 21 times
Summary
This study looks at a common heart drug, verapamil, which is also used to prevent cluster headaches at much higher doses. Researchers want to see how often it causes a mild heart block (a delay in the heart's electrical signals). The goal is to better understand these side effects so doctors can use the drug more safely. About 60 adults with cluster headaches will take part.
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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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Contacts and locations
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Locations
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AP-HP Hôpital la Timone
Marseille, 13005, France
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CHU de Nice
Nice, CHUN, 06003, France
Conditions
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