# Effect of Ketanserin After LSD Administration

> **NCT04558294** · PHASE1 · COMPLETED · sponsor: **University Hospital, Basel, Switzerland** · enrollment: 24 (actual)

## Conditions studied

- Healthy

## Interventions

- **DRUG:** Lysergic Acid Diethylamide
- **DRUG:** Ketanserin Placebo
- **DRUG:** Ketanserin

## Key facts

- **NCT ID:** NCT04558294
- **Lead sponsor:** University Hospital, Basel, Switzerland
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-10-16
- **Primary completion:** 2021-08-28
- **Final completion:** 2021-09-29
- **Target enrollment:** 24 (ACTUAL)
- **Last updated:** 2021-10-21


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04558294

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04558294, "Effect of Ketanserin After LSD Administration". Retrieved via AI Analytics 2026-05-30 from https://api.ai-analytics.org/clinical/NCT04558294. Licensed CC0.

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