Heart risks under the microscope: verapamil for cluster headaches
NCT ID NCT04406259
First seen Jan 11, 2026 · Last updated Jun 17, 2026 · Updated 25 times
Summary
This study looks at how often heart block (a slow or disrupted heartbeat) happens when using high doses of verapamil to prevent cluster headaches. About 60 adults with cluster headaches will be monitored with ECGs and blood tests. The goal is to better understand and manage these heart risks.
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This is a summary of
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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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
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.