# Ketamine + Magnesium for Chronic Cluster Headache (KETALGIA)

> **NCT04814381** · PHASE4 · COMPLETED · sponsor: **University Hospital, Clermont-Ferrand** · enrollment: 93 (actual)

## Conditions studied

- Refractory Chronic Cluster Headache

## Interventions

- **DRUG:** Ketamine + Magnesium sulfate (drug combination)

## Key facts

- **NCT ID:** NCT04814381
- **Lead sponsor:** University Hospital, Clermont-Ferrand
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-09-15
- **Primary completion:** 2025-12-23
- **Final completion:** 2025-12-23
- **Target enrollment:** 93 (ACTUAL)
- **Last updated:** 2026-05-08

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04814381

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04814381, "Ketamine + Magnesium for Chronic Cluster Headache (KETALGIA)". Retrieved via AI Analytics 2026-07-31 from https://api.ai-analytics.org/clinical/NCT04814381. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*