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Brand name: Entonox 50% / 50%

Entonox 50% / 50% is a medicine containing the active ingredient(s) nitrous oxide + oxygen. On this page you will find out more about Entonox 50% / 50%, including side effects, age restrictions, food interactions and whether the medicine is subsidised by the government on the pharmaceutical benefits scheme (PBS)

You should seek medical advice in relation to medicines and use only as directed by a healthcare professional. Always read the label. If symptoms persist see your healthcare professional. healthdirect medicines information is not intended for use in an emergency. If you are suffering an acute illness, overdose, or emergency condition, call triple zero (000) and ask for an ambulance.

Reasonable care has been taken to provide accurate information at the time of creation. This information is not intended to substitute medical advice, diagnosis or treatment and should not be exclusively relied on to manage or diagnose a medical condition. Please refer to our terms and conditions.

Active ingredient in this medicine: nitrous oxide + oxygen

Information for medicine and pack size:
Entonox 50% / 50% medicinal gas, 2 L

Consumer Medicine Information leaflet:

This leaflet may also be found inside the medicine package. It contains information on side effects, age restrictions and other useful data.

Read leaflet

What this medicine is for

INDICATIONS AS AT 1 NOVEMBER 2001: "Nitrous oxide with oxygen (Entonox) is indicated in adults and children for analgesia." This approval is based on the evaluation of the information and data provided with the original letter of application and with any subsequent correspondence and submissions relating to the application.

Table of characteristics
Table of characteristics
Active ingredient
Visual appearance Colourless gas
Dosage Form Gas, medicinal
Route of administration Inhalation
Medicine schedule
various: Prescription Only Medicine, or Prescription Animal Remedy

There is one type of pack available.

Pack type 1
Pack type 1
Type Gas Cylinder
Storage temperature No information available
Storage conditions No information available
Life time 0
We were unable to verify that this medicine is available on the PBS (Pharmaceutical Benefits Scheme). Please consult your pharmacist if you need further information

The PBS provides a list of government subsidised medicines available to be dispensed to patients. Further information can be found on the Pharmaceutical Benefits Scheme website.

Go to PBS site

Is this medication banned in sport?

Check if you can use your medicine whilst playing sport. Search the Australian Sports Anti-Doping Authority (ASADA) database that provides information about the prohibited status of specific medications and/or the active ingredient based on the current World Anti-Doping Agency (WADA) Prohibited List.

Go to ASADA site

The information displayed on this page is authored by Healthdirect Australia, or obtained from trusted sources.
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