A warning has been issued about drivers using nitrous oxide after a spike in crashes linked to the drug.

The gas is also known by other names, including “nangs”, laughing gas and nos. It gives users a fleeting “high” feeling, accompanied by hallucinations.

The gas is contained in small metal canisters primarily used for culinary purposes, such as whipping cream.

Police are concerned about the growing number of incidents involving drivers under the influence of the gas. They warn that not only is the driver at risk, but passengers and other road users can be too.

Rotorua residents have become frustrated at a recent increase in the use of nangs in public spaces.

Assistant Commissioner of Road Policing and District Support Tusha Penny said substances that affected judgment, co-ordination or consciousness could have deadly consequences.

“Police [are] concerned with the immediate danger this is posing on the road.

“We are now seeing an increase in the use of nitrous oxide as a factor in a number of serious crashes, including some crashes where people have died.”

Penny said the risks were “clear and grave: inhaling nitrous oxide can rapidly cause dizziness, confusion, and blackouts”.

Police have thanked the public for reports of users inhaling the gas in cars.

“We have taken action in response to those calls, and they have helped prevent harm and likely saved lives.”

Police have reminded retailers that the sale of nitrous oxide for recreational use primarily to induce a psychoactive effect is illegal under the Psychoactive Substances Act.

Ministry of Health chief medical officer Dr Joe Bourne said reports of nitrous oxide misuse linked with driving “are of particular concern”.

Dr Joe Bourne said the side effects of inhaling nitrous oxide include dizzyness and blackouts. Photo / Bay of Plenty Times- Andrew Warner.

“Nitrous oxide may seem relatively harmless, but it can cause real damage. When it’s inhaled, the gas pushes oxygen out of your lungs and bloodstream, which can make you dizzy, cause you to black out, or even be life-threatening in some cases.”

Inhalation also had long-term effects.

“Separately, we know that heavy, frequent or chronic use can cause nerve damage, leading to weakness, numbness and long-term problems with movement or co-ordination.”

He advised individuals with concerns about the gas to contact their healthcare providers.

If you’re concerned about your drinking or drug-taking, you can contact the Alcohol Drug Helpline on 0800 787 797, or text 8681.