Nitrous Oxide
Other General Anesthetics
Sold as ALNOX GAS · ENTONOX MEDICINAL GAS · NITRONOX INHALATION GAS · LIQUI-MED ANALGESIC GAS
- Drug class
- Other General Anesthetics
- Availability
- Prescription only
- Routes
- Respiratory (Inhalation), Inhalation
- Markets covered
- 3
- Products on record
- 16
- FDA reports (12 mo)
- 120
Overview
Nitrous Oxide is an active pharmaceutical ingredient in the Other General Anesthetics group (N01AX). The information below is compiled per regulator from the product labels on record, with direct links to the original documents.
Regulatory status by market
| Market | Regulator | Products | Last revision |
|---|---|---|---|
| GB United Kingdom | MHRA | 6 | April 10, 2026 |
| US United States | FDA | 5 | May 21, 2026 |
| CA Canada | Health Canada | 5 | March 22, 2025 |
GBUnited Kingdom· MHRA
6 products
Uses
As an inhalation anaesthetic. As an analgesic where rapid-onset powerful short-term relief of severe pain is required.
How to take
USUnited States· FDA
5 products
5 products on record with this regulator. Detailed label text (uses, dosage, side effects) is being ingested — the original document is linked under Sources [2].
Most-reported reactions to the US regulator (12 mo to June 4, 2026): 120 reports total. [4]
- Drug Use Disorder 15
- Paraesthesia 15
- Drug Dependence 12
- Substance Use Disorder 10
- Intentional Product Misuse 9
- Mydriasis 9
- Pulmonary Embolism 9
- Tachycardia 9
- Drug Ineffective 7
- Vitamin B12 Deficiency 7
- Agitation
CACanada· Health Canada
5 products
5 products on record with this regulator. Detailed label text (uses, dosage, side effects) is being ingested — the original document is linked under Sources [3].
Brands in Canada (2)
Drug interactions
Known interactions involving Nitrous Oxide. Select one for details. This list is informational and not a complete interaction checker.
Interaction data compiled from DDInter (academic, CC-BY). Severity classification only - this is not a complete interaction checker and not medical advice.
Sources & citations
- [1]MHRA (UK) · PL159290004 · revised December 19, 2025
- [2]FDA DailyMed · 00d2e785-1cdc-49… · revised October 13, 2025 [PDF]
- [3]Health Canada (DPD) · 00572845 · revised March 22, 2025
- [4]OpenFDA adverse-event reports (US), 12 months ending June 4, 2026.
Information on this page is compiled from public regulatory records. Drugvu is not affiliated with any regulator or pharmaceutical manufacturer. This is not medical advice. Always consult a qualified healthcare professional.