The most used drug among people aged 16-24 can cause loss of feeling in hands and feet and even cause lungs to collapse.
Nitrous oxide balloons have become increasingly popular in recent years, with teenagers and young people filling rubber balloons with the gas from a cannister and then inhaling. Due to the gas not currently being illegal to possess, there may be misconceptions about the dangers that come with taking the drug.
The "legal high" has become heavily linked with party culture among young people in the UK, and can lead to devastating consequences if abused. One student at a Liverpool university told the ECHO about their experiences with the drug.