Can a Self-Inhaled vapor beat oral painkillers in the ER?

NCT ID NCT07742007

Not yet recruiting Symptom relief Sponsor: University Hospital, Tours Source: ClinicalTrials.gov ↗

First seen Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time

Summary

This trial asks whether inhaling methoxyflurane, a fast-acting pain reliever, can reduce pain more quickly than standard oral medications for adults arriving at the emergency department with non-traumatic pain. Participants with moderate to severe pain will be randomly assigned to receive either methoxyflurane or usual care, and the time to meaningful pain relief will be measured. The goal is to see if this inhaled option can offer faster relief for people waiting in the ER.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Methoxyflurane (Penthrox), an inhaled analgesic self-administered under supervision
What this could lead to: If effective, methoxyflurane could offer a fast, non-opioid option for managing moderate to severe pain in emergency departments, potentially reducing wait times for relief.
What could go wrong: This is a phase 3 trial, but results are not yet known. Methoxyflurane may not prove superior to usual care, and it carries risks like any medication, including potential side effects or contraindications.

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Conditions

The condition(s) this trial relates to.

agnosia Emergencies

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

PAIN MANAGEMENT

Contacts and locations

Locations

CHRU Hôpitaux de Tours - Urgences de l'Hôpital Trousseau

Tours, CHRU de Tours, 37170, France
CHU d'Angers

Angers, 49100, France
CHU d'Orléans

Orléans, 45100, France

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