Gox pure oxygen go x is 99 5 pure oxygen that will re energise you when you are feeling low it is quite easy to use simply swing in the trip lever and put the inhaler cup over mouth and nose then press the trip lever down for 1 2 sec and inhale deeply at the same time inhale at least 5 times for each application the contents are enough for aproxx 40 inhalations uses brain power can be increased by 40 will lesson the effects of a hangover alternative medicine packaging and contents