An antinociceptive is a substance which inhibits nociception - the sensation of pain.
Edgar Pathrose Spencer has written: 'The flux of biogenic amines associated with antinociceptive responses to cranial microelectrostimulation in rats'
Nitrous oxide gives rise to NO on reaction with oxygen atoms, and this NO in turn reacts with ozone. As a result, it is the main naturally occurring regulator of stratospheric ozone. It is also a major greenhouse gas and air pollutant. Considered over a 100 year period, it has 298 times more impact per unit weight than carbon dioxide.Nitrous oxide is a greenhouse gas, accounting for around 6% of the heating effect of greenhouse gases in the atmosphereIt is neurotoxic and analgesic and antinociceptive