Nitrous Oxide (N2O or Laughing Gas)
Laughing gas is a mix of two gases, nitrous oxide and oxygen. A fitted mask is placed over the nose and normal breathing allows uptake of the gas into the lungs.
It has a faint sweet smell and provides a sense of calmness and can significantly reduce anxiety and fear. Patients remain awake while they are breathing laughing gas. When the mask is removed from the nose it takes only a few breaths of oxygen to completely expel the gas entirely from the lungs. There are no lingering sedative effects of laughing gas after the mask is removed. Laughing gas works very well for children that are very anxious and fearful.