When coming into hospital, children, young people and their families are often worried that they may be in pain. Entonox is a gas – a mixture of half oxygen and half nitrous oxide that is used for pain relief. Entonox® can also be called ‘gas and air’ or ‘laughing gas’. Entonox is used for short-term pain relief and calming of anxiety during a range of painful procedures. It is used most commonly at GOSH for procedures such as chest drain removal, dressing changes, lumbar punctures, pin site cleaning, joint injections or botulinum toxin injections. It is not used for blood tests or insertion of cannula (thin, plastic tube) into a vein. Ankur Gases is leading supplier of Entonox Gas in Rajasthan.