Penthrox is a medicine that is used to reduce pain.


It is inhaled through a custom built penthrox inhaler and usually starts working within 6-10 breaths. Penthrox eliminates both the fear of needles and pain because it can be inhaled and start to work almost immediately. One 3 mL bottle of Penthrox provides approximately 20-25 minutes of no pain.

Penthrox is a clear, almost colourless liquid with a characteristic fruity smell that becomes a vapour or gas easily once it has been poured Into the Penthrox inhaler. Penthrox is a safe, convenient and effective means of providing pain relief to patients. With 30 years of use within Australia, Penthrox is commonly referred to as the “first line” in pain management.

With Penthrox you are in control of the amount of pain relief that you need. Breathe through the mouthpiece, initially ensuring that the “dilutor” hole of the AC Chamber is not covered. To make sure that you are used to taking in the Penthrox your first few breaths should be gentle. You can breathe out through a chamber attached to the inhaler or you can breathe out through your nose, which ever makes you feel more comfortable.

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