Preferred Label : nitrous oxide;

MeSH definition : Nitrogen oxide (N2O). A colorless, odorless gas that is used as an anesthetic and analgesic. High concentrations cause a narcotic effect and may replace oxygen, causing death by asphyxia. It is also used as a food aerosol in the preparation of whipping cream.;

MeSH synonym : oxide, nitrous; Nitrogen Protoxide; laughing gas; gas, laughing;

CISMeF synonym : dinitrogen oxide;

MeSH CAS label : nitrogen oxide (N2O);

MeSH Related Number : 10024-97-2 (Nitrous oxide);

Registry Number MeSH : 10024-97-2;

Wikipedia link : https://en.wikipedia.org/wiki/Nitrous oxide;

Codes EINECS : 233-032-0;

Chemical formula : N2O;

Is substance : O;

medicament (CISMeF) : O;

UNII : K50XQU1029;

InChIKey : GQPLMRYTRLFLPF-UHFFFAOYSA-N;

Details


Main resources

You can consult :

Nitrogen oxide (N2O). A colorless, odorless gas that is used as an anesthetic and analgesic. High concentrations cause a narcotic effect and may replace oxygen, causing death by asphyxia. It is also used as a food aerosol in the preparation of whipping cream.

https://ansm.sante.fr/informations-de-securite/entonox-170-bar-gaz-pour-inhalation-en-bouteille-risque-de-defaut-dadministration-lie-au-blocage-du-robinet-par-le-froid-lors-dune-administration-avec-un-debit-continu-superieur-a-8-l-min-branchement-a-partir-de-lolive-de-sortie-du-robinet
2025
false
false
false
France
French
pharmacovigilance note
oxygen
nitrous oxide
drug combinations
meopa
nitrous oxide, combinations
Gas Output Problem

---
https://www.senat.fr/rap/l24-359/l24-359.html
2025
France
technical report
reinforcement, nos
proposita
law
nitrous oxide
wrestling
nitrous oxide
culture
Reinforcement, Psychology

---
https://ansm.sante.fr/actualites/le-proto-des-cas-dintoxication-toujours-en-augmentation
2025
false
false
false
France
French
vigilance note
nitrous oxide
adolescent
young adult
Poisoning caused by nitrous oxide (disorder)
Poisoning caused by nitrous oxide (disorder)
Poisoning caused by nitrous oxide (disorder)
france
signs and symptoms
poisoning
substance-related disorders

---
https://www.anses.fr/fr/content/protoxyde-azote-limiter-exposition-professionnels
https://www.anses.fr/fr/system/files/VSR2020SA0042Ra.pdf
2024
France
public health guidelines
Occupational Exposure
nitrous oxide
nitrous oxide
medical futility
occupational exposure
Nitrite
Limiter Device
Nitrous Oxide
effects of exposure to external cause, nos

---
https://www.acadpharm.org/dos_public/MONNERET-12074-.PDF
2023
France
journal article
gases
gas, nos
nitrous oxide
systolic pressure
nitrous oxide
nitrogen

---
https://www.louvainmedical.be/fr/article/consommation-de-protoxyde-dazote-et-neurotoxicite
2023
Belgium
journal article
Neurotoxicity Syndrome
neurotoxicity, nos
nitrous oxide
nitrous oxide
Nitrous Oxide
Nitrite
economics

---
https://sfar.org/preconisations-concernant-linstallation-de-reseaux-de-protoxyde-dazote-n2o/
2023
France
scientific and technical information
reticulum
nitrous oxide
nitrous oxide

---
https://dumas.ccsd.cnrs.fr/dumas-04081343
2023
France
dissertations, academic
Tobacco Use Epidemiology
nitrous oxide
economics
Occupational Epidemiology
france
Island
Ivor Lewis Esophagectomy
Nitrous Oxide
Breast Cancer Epidemiology
Isoleucine Measurement
Isoleucine
students, medical
epidemiology
Genetic Epidemiology
Dental Epidemiology
Nitrite
nitrous oxide
Infectious Disease Epidemiology
AIDS Epidemiology
Medication
french
paris
CHFR Gene
student, nos

---
https://ansm.sante.fr/actualites/intoxication-au-protoxyde-dazote-lansm-publie-un-document-daide-au-diagnostic-et-a-la-prise-en-charge-pour-les-professionnels-de-sante
2023
false
false
false
France
French
practice guideline
nitrous oxide
Poisoning caused by nitrous oxide (disorder)

---
https://dumas.ccsd.cnrs.fr/dumas-04222519
2023
France
dissertations, academic
nitrous oxide
economics
Youth
Autonomic Nervous System
Nitrous Oxide
adolescent
Nitrite
Going Well
Twenty Five
nitrous oxide

---
https://addictions-france.org/datafolder/uploads/2022/06/Capsulereperes-Protoxydedazote-Mai20221.pptx
https://www.youtube.com/watch?v=tFGBlZMTBRE
2022
false
false
false
false
France
video recording
scientific and technical information
nitrous oxide

---
https://addictions-france.org/datafolder/uploads/2022/08/CPostale_PROTOXYDJeune_BaT2_VDEF.pdf
2022
France
patient education handout
france
nitrous oxide
France
association
nitrous oxide
french
France
France
dependent drug abuse
adolescent
France
Addiction
behavior, addictive

---
https://www.infodrog.ch/files/content/schadensminderung_fr/2022-07_FR_Fiche_Info_Gaz_hilarant_def.pdf
2022
Switzerland
scientific and technical information
nitrogen
gases
gas, nos
nitrous oxide
nitrogen, nos
nitrous oxide

---
https://dumas.ccsd.cnrs.fr/dumas-03777703
2022
France
dissertations, academic
nitrous oxide
nitrous oxide

---
https://dumas.ccsd.cnrs.fr/dumas-04069693
2022
France
Population Health
population characteristics
nitrous oxide
students
student, nos
nitrous oxide
hospitals, proprietary

---
https://www.ofdt.fr/publication/2022/les-usages-psychoactifs-du-protoxyde-d-azote-593
2022
false
false
false
France
journal article
culture
nitrous oxide
nitrous oxide

---
https://www.anses.fr/fr/system/files/Toxicovigilance2021AST0027Ra.pdf
2021
France
technical report
case reports
central
bays
research report
snacks
Balance Sheet
inlets
nitrous oxide
albumin/globulin ratio
poison control centers
nitrous oxide

---
http://www.senat.fr/rap/l20-599/l20-599.html
2021
France
technical report
law
nitrous oxide
nitrous oxide
culture
minors
proposita

---
https://ansm.sante.fr/actualites/protoxyde-dazote-des-intoxications-en-hausse
2021
false
false
false
France
French
vigilance note
nitrous oxide
france
Poisoning caused by nitrous oxide (disorder)
gas poisoning
Drug Misuse
Intentional misuse

---
https://www.anses.fr/fr/content/inhalation-de-protoxyde-d%E2%80%99azote-l%E2%80%99anses-recommande-d%E2%80%99am%C3%A9liorer-la-r%C3%A9glementation-et-de-mieux
2020
France
scientific and technical information
health planning guidelines
regulation
inhalers
bays
administration, inhalation
nitrous oxide
inspiration
risk
nitrous oxide
social control, formal
inlets
hazardous substances
nebulizers and vaporizers
risk

---
https://www.sforl.org/wp-content/uploads/2020/04/MEOPA.pdf
2020
false
false
false
France
coronavirus infections
pneumonia, viral
infectious disease transmission, Patient-to-Professional
guideline
meopa
pandemics
nitrous oxide
oxygen compounds
pneumonia, viral
coronavirus infections
pandemics
nitrous oxide
oxygen compounds
pneumonia, viral
coronavirus infections
pandemics
COVID-19
COVID-19

---
https://ansm.sante.fr/uploads/2020/10/14/20201014-dhpc-meopa-covid.pdf
2020
false
false
false
France
French
guidelines for drug use
meopa
coronavirus infections
pneumonia, viral
infectious disease transmission, Patient-to-Professional
nitrous oxide, combinations
administration, inhalation
filtration
nitrous oxide
oxygen compounds
pandemics
pneumonia, viral
coronavirus infections
pandemics
pneumonia, viral
coronavirus infections
pandemics
COVID-19
COVID-19
COVID-19

---
https://www.inrs.fr/media.html?refINRS=TF%20275
2020
France
journal article
effects of exposure to external cause, nos
nitrous oxide
Exhibition
meopa
nitrous oxide

---
https://www.inesss.qc.ca/covid-19/autres-traitements/protoxyde-dazote-pendant-laccouchement.html
2020
false
false
false
Canada
coronavirus infections
pneumonia, viral
pregnancy
nitrous oxide
labor, obstetric
guideline
COVID-19

---
https://www.has-sante.fr/jcms/p_3136091/fr/protoxyde-d-azote-medicinal-messer-france
2019
false
false
false
France
French
evaluation of the transparency committee
evaluation studies as topic
France
france
France
nitrous oxide
France
french
France
nitrous oxide

---
https://www.sfmu.org/upload/30_vieprofessionnelle/4_outils_pro/6_alertessanitaires/minsante_corruss_protoxyde_azote.pdf
2019
false
false
false
France
Drug Misuse
risk assessment
scientific and technical information
nitrous oxide

---
https://sante.gouv.fr//actualites/presse/communiques-de-presse/article/augmentation-des-cas-graves-en-lien-avec-l-usage-detourne-de-protoxyde-d-azote
2019
false
false
false
France
Drug Misuse
scientific and technical information
nitrous oxide

---
https://www.centreantipoisons.be/autre/le-gaz-hilarant-fait-parfois-rire-jaune
2019
false
false
false
Belgium
patient education handout
nitrous oxide

---
http://www.sudoc.fr/236156012
2019
France
dissertations, academic
nitrous oxide
risk
pain management
has provider
meopa
nitrous oxide
festschrift
professional practice
pain
pain, nos
risk-taking
risk assessment
caregivers
oxygen, nos
oxygen
hospitals, university
Practice
risk
pain
oxygen compounds

---
http://www.sfmg.org/download.php?sequence=actualite_fiche_86889820dec036531f9c1fb4566b553b
2019
false
true
false
false
France
nitrous oxide
meopa
oxygen compounds
nitrous oxide
journal article
nitrous oxide

---
https://www.has-sante.fr/jcms/p_3135586/fr/protoxyde-d-azote-medicinal-linde-healthcare
2019
false
false
false
France
French
evaluation of the transparency committee
nitrous oxide
devices
nitrous oxide
device, nos
Set, Psychology
equipment and supplies

---
https://addictions-france.org/datafolder/uploads/2021/02/Fiche-Reperes-Protoxyde-d-azote.pdf
2019
France
scientific and technical information
cues
nitrous oxide
nitrous oxide

---
https://www.omedit-centre.fr/medias/MEOPA_HAD.pdf
2018
false
false
false
France
French
home care services, hospital-based
meopa
guidelines for drug use
analgesics, non-narcotic
ambulatory care
pain
nitrous oxide
oxygen compounds

---
https://www.armb.be/fileadmin/sites/armb/uploads/Document-site/pdf/Avis/2018/Advies_NLFR_20181112_protoxyde_d_azote.pdf
2018
false
false
false
Belgium
French
belgium
administration, inhalation
analgesics, non-narcotic
conscious sedation
education, professional
guideline
physicians
nitrous oxide
dentists

---
https://www.omedit-centre.fr/medias/MEOPA_HAD.pdf
2018
false
false
false
France
French
guidelines for drug use
administration, inhalation
meopa
acute pain
acute pain
patient care
ambulatory care
home care services, hospital-based
pressure ulcer
drug storage
skin ulcer
nitrous oxide
oxygen compounds

---
https://www.omedit-centre.fr/medias/MEOPA.pdf
2018
false
false
false
France
French
administration, inhalation
guidelines for drug use
meopa
meopa
drug combinations
nitrous oxide
nitrous oxide
oxygen
oxygen
nitrous oxide, combinations
patient care
acute pain
acute pain
conscious sedation
analgesia, obstetrical
analgesia, Patient-Controlled
analgesia
pain management
oxygen compounds
oxygen compounds

---
https://www.has-sante.fr/portail/jcms/c_2803696/fr/actynox
2017
false
false
false
false
France
French
evaluation of the transparency committee
administration, inhalation
drug combinations
oxygen
nitrous oxide
pain
nitrous oxide, combinations
treatment outcome
adult
child
infant

---
http://www.has-sante.fr/portail/jcms/c_2748394/fr/oxynox
2017
false
false
false
France
French
evaluation of the transparency committee
insurance, health, reimbursement
oxygen
nitrous oxide, combinations
drug combinations
nitrous oxide

---
http://www.health.belgium.be/fr/avis-9299-protoxyde-dazote
2016
false
false
false
Belgium
French
guidelines
Off-Label use
hypnotics and sedatives
oxygen
nitrous oxide
achievement
nitrous oxide
sedation, nos
sedated state
sedatives
nursing
recommendations, health planning
oxygen, nos
health planning guidelines

---
https://www.inspq.qc.ca/publications/2205
2016
false
false
false
Canada
French
technical report
gases
gas, nos
health facilities
nitrous oxide
hydrocarbons
nitrous oxide
hydrocarbon, nos
flatulence
contaminated

---
https://www.inrs.fr/media.html?refINRS=TP%2026
https://www.inrs.fr/dms/inrs/CataloguePapier/DMT/TI-TP-26/tp26.pdf
2016
false
false
false
France
French
journal article
occupational health physicians
dataset
preventive medicine
nitrous oxide
effects of exposure to external cause, nos
occupation, nos
physician's role
nitrous oxide
medial
Exhibition
nursing
role
occupational medicine
meopa
toxic effect
dataset
preventive medicine
Exhibition
role
oxygen compounds

---
http://www.sudoc.fr/198178220
2016
false
false
false
France
French
dissertations, academic
intellectual disability
aptitude
meopa
educational measurement
patient care management
ambulatory care
impairment
nitrous oxide
oxygen compounds

---
https://reptox.cnesst.gouv.qc.ca/pages/fiche-complete.aspx?no_produit=331488&nom=Oxyde+nitreux
Canada
toxicological data sheet
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=64959847
2012
France
summary of product characteristics
package leaflet
flatulence
nitrous oxide
administration, inhalation

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=60408330
2012
France
package leaflet
summary of product characteristics
nitrous oxide
france
administration, inhalation
soil
flatulence

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=66210572
2012
France
package leaflet
summary of product characteristics
flatulence
france
administration, inhalation
soil
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=60194175
2012
France
package leaflet
summary of product characteristics
radiographic image enhancement
flatulence
administration, inhalation
air
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=61607132
2012
France
summary of product characteristics
package leaflet
radiographic image enhancement
air
nitrous oxide
flatulence
administration, inhalation

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=63729455
2012
France
package leaflet
summary of product characteristics
health
air
france
nitrous oxide
administration, inhalation
radiographic image enhancement
flatulence

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=66745781
2012
France
package leaflet
summary of product characteristics
france
administration, inhalation
flatulence
air
health
radiographic image enhancement
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=66892450
2012
France
summary of product characteristics
package leaflet
administration, inhalation
flatulence
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=67831361
2012
France
package leaflet
summary of product characteristics
administration, inhalation
air
flatulence
radiographic image enhancement
nitrous oxide

---
http://www.cochrane.org/fr/CD008506
2011
false
true
false
France
United Kingdom
treatment outcome
review of literature
french abstract
nitrous oxide
colonoscopy

---
http://www.inrs.fr/accueil/dms/inrs/PDF/bdd-demeter/DEM-076/DEM%20076.pdf
2010
toxicological data sheet
nitrous oxide

---
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=67326868
http://agence-prd.ansm.sante.fr/php/ecodex/frames.php?specid=67326868&typedoc=R&ref=R0178609.htm
http://agence-prd.ansm.sante.fr/php/ecodex/frames.php?specid=67326868&typedoc=N&ref=N0178609.htm
2010
France
French
nitrous oxide, combinations
Entonox
Entonox
oxygen
oxygen
anesthetics, inhalation
anesthetics, inhalation
anesthetics, combined
anesthetics, combined
drug combinations
administration, inhalation
nitrous oxide
nitrous oxide
pregnancy
drug interactions
anesthesia, dental
anesthesia, obstetrical
nitrous oxide
oxygen
summary of product characteristics
package leaflet

---
https://www.omedit-centre.fr/medias/MEOPA_Etablissement-sante.pdf
2010
false
France
French
meopa
nitrous oxide
oxygen
drug combinations
anesthesia, inhalation
anesthetics, combined
nitrous oxide, combinations
conscious sedation
adult
child
administration, inhalation
guidelines for drug use
oxygen compounds

---
http://agence-prd.ansm.sante.fr/php/ecodex/frames.php?specid=65070135&typedoc=R&ref=R0164490.htm
http://agence-prd.ansm.sante.fr/php/ecodex/frames.php?specid=65070135&typedoc=N&ref=N0164490.htm
http://agence-prd.ansm.sante.fr/php/ecodex/extrait.php?specid=65070135
2009
France
French
package leaflet
summary of product characteristics
administration, inhalation
anesthetics, inhalation
anesthetics, inhalation
anesthetics, combined
anesthetics, combined
nitrous oxide
drug combinations
nitrous oxide
oxygen
oxygen
conscious sedation
anesthesia, obstetrical
anesthesia, dental
drug interactions
pregnancy
nitrous oxide, combinations

---
https://centres-antipoison.net/wp-content/uploads/2017/08/rapport_CCTV_protoxyde_d_azote_2007.pdf
2007
France
scientific and technical information
nitrous oxide

---
http://www.has-sante.fr/portail/display.jsp?id=c_399825
http://www.has-sante.fr/portail/upload/docs/application/pdf/ct031394.pdf
2003
France
French
evaluation of the transparency committee
adult
child
drug combinations
anesthetics, inhalation
anesthetics, combined
nitrous oxide
oxygen
anesthesia, dental
anesthesia, obstetrical
conscious sedation
administration, inhalation
nitrous oxide, combinations

---
http://www.has-sante.fr/portail/display.jsp?id=c_399458
2002
France
evaluation of the transparency committee
nitrous oxide
radiographic image enhancement
air

---
http://www.has-sante.fr/portail/display.jsp?id=c_399457
2002
France
evaluation of the transparency committee
france
administration, inhalation
oxygen
flatulence
soil
steel
nitrous oxide

---
http://www.has-sante.fr/portail/upload/docs/application/pdf/ct020893.pdf
2002
France
French
nitrous oxide
anesthetics, inhalation
nitrous oxide
administration, inhalation
adjuvants, anesthesia
analgesics, non-narcotic
evaluation of the transparency committee

---
http://www.has-sante.fr/portail/upload/docs/application/pdf/ct021115.pdf
http://www.has-sante.fr/portail/display.jsp?id=c_399560
2002
France
French
drug combinations
anesthetics, combined
kalinox
anesthetics, inhalation
nitrous oxide
oxygen
conscious sedation
anesthesia, obstetrical
anesthesia, dental
adult
child
nitrous oxide, combinations
administration, inhalation
evaluation of the transparency committee

---
http://www.has-sante.fr/portail/display.jsp?id=c_399460
2002
France
evaluation of the transparency committee
france
soil
nitrous oxide

---
http://www.has-sante.fr/portail/display.jsp?id=c_399459
2002
France
evaluation of the transparency committee
air
flatulence
steel
nitrous oxide
radiographic image enhancement
administration, inhalation

---
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