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Study identifier: NCT04695600 Synced from ClinicalTrials.gov · July 29, 2026
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Onabotulinum Toxin A (Botox) in the Treatment of Pharyngo-esophageal Dysphagia

Condition: Transfer Dysphagia · Oropharyngeal Dysphagia · Cricopharyngeus Muscle Dysfunction  ·  Sponsor: All India Institute of Medical Sciences

PhasePhase 2/Phase 3
Planned participants100
Who can joinAll sexes, 14 Years to no upper limit
Healthy volunteersNo

About this study

Dysphagia in patients with stroke, multiple sclerosis, parkinsonism or dystonia can occur due to relative hypertonia of the cricopharyngeus muscle. In the resting state, muscle is contracted and relaxes only during deglutition. Treatment of dysphagia by injecting botulinum toxin in the cricopharyngeus was described by Schneider et al. in 1994. More than 100 cases have been described after that, however there are no randomized controlled trials. A meta-analysis from Cochrane has also concluded that there is no sufficient evidence to conclude regarding the efficacy and safety of Botulinum toxin injection in cricopharyngeal dysfunction. So this study is necessary to fill this void in knowledge

This description comes directly from the study's public registry record.

Talk to the study team

Arunmozhimaran Elavarasi, MD DM  ·  +919013844274  ·  arun_ela@yahoo.com

Pramod Garg, MD DM  ·  +919810038116  ·  pkgarg@aiims.ac.in

Always discuss trial participation with your own doctor first.

Locations (1)

All India Institute of Medical Sciences, New DelhiNew Delhi, National Capital Territory of Delhi, IndiaRecruiting

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Source record: clinicaltrials.gov/study/NCT04695600