# Effect of the Antihistamine Injection to Prevent Paradoxical Reaction During Sedative Endoscopy

> **NCT03940391** · NA · UNKNOWN · sponsor: **Seoul National University Hospital** · enrollment: 220 (estimated)

## Conditions studied

- Endoscopy

## Interventions

- **DRUG:** Chlorpheniramine and midazolam
- **DRUG:** Midazolam

## Key facts

- **NCT ID:** NCT03940391
- **Lead sponsor:** Seoul National University Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-05-01
- **Primary completion:** 2020-04-14
- **Final completion:** 2020-04-14
- **Target enrollment:** 220 (ESTIMATED)
- **Last updated:** 2020-04-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03940391

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03940391, "Effect of the Antihistamine Injection to Prevent Paradoxical Reaction During Sedative Endoscopy". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT03940391. Licensed CC0.

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