Nitrous Oxide, is referred to by its colloquial names as Laughing Gas, Nitrous, or NOS. It is a chemical compound classified as an Oxide of Nitrogen, with a chemical formula of N₂O. It exists as a colorless and non-flammable gas at standard room temperature, possessing a faintly sweet aroma and flavor.
Nitrous oxide has been widely acknowledged as a safe and efficient sedative agent. It is commonly administered through a small mask that fits snugly over the patient's nose and is then inhaled, typically mixed with oxygen. The gas facilitates relaxation and can provide a calming effect.
For more than two centuries, nitrous oxide has been a reliable and widely-used method of oral sedation in medical practice. The compound, also known as laughing gas, was originally discovered in 1793 by the prominent English scientist Joseph Priestley.