Ondansetron to prevent fainting episodes from vasovagal syncope
Treatments studied
Part of Brain & nervous system clinical trials.
This Phase 2 study tests whether ondansetron can help prevent future fainting (vasovagal syncope) in adults who have had recent episodes. If it works, it may reduce how often you faint and improve safety in everyday situations.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You had at least one fainting spell in the past 12 months
- Your symptoms fit the study’s vasovagal fainting pattern (scored by a clinic questionnaire)
- You are 18 years or older and can give informed consent
- You do not have other known causes of fainting like certain heart rhythm problems or blood pressure drops when standing
- You are not pregnant or breastfeeding
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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