Nitrous oxide is set to become a class C drug in the UK, with users potentially facing two year prison sentences.

People caught using laughing gas recreationally could face up to two years in prison or an unlimited fine, while dealers could receive 14 years sentences if caught.

NOS, which is often inhaled from balloons, is the third most commonly used drug among 16 to 24-year-olds in England.

Following Notting Hill carnival last month, Kensington and Chelsea council said it collected five skips of empty NOS canisters from its streets.

Ministers have long spoken to ban the sale and possession of the drug that is known as laughing gas as part of a bid to tackle antisocial behaviour around the country.

Home Secretary Suella Braverman said: “The British people are fed up with yobs abusing drugs in public spaces and leaving behind a disgraceful mess for others to clean up.

“Earlier this year the Prime Minister and I promised a zero-tolerance approach to antisocial behaviour and that is what we are delivering. If you are caught using ‘laughing gas’ as a drug, you could be hit with a hefty fine or face jail time.

“New schemes are already underway to increase police patrols in hotspot areas of antisocial behaviour and dish out punishments for perpetrators more quickly, and police will soon be able to drug test people arrested for a wider range of illegal drugs.”

The Times newspaper previously reported that drug-misuse laws would be updated to allow people found with nitrous oxide gas in public to be prosecuted and now the change is allegedly imminent.

After cannabis, laughing gas is the most commonly used drug among 16- to 24-year-olds in England.

The substance can also be used as pain relief during dental treatment or childbirth.

There are concerns about health problems caused by its usage, with cases where it has been linked to nerve damage, paralysis, or death.

Current legislation bans the knowing or reckless supply of nitrous oxide for inhalation but the new calls are for a ban on all direct consumer sales as part of a tightening up of the law on the commonly used drug.

In a 2019-20 Crime Survey for England and Wales, almost nine per cent of 16- to 24-year-olds said they’d taken nitrous oxide in the past year, a rise of 6.1 per cent from 2012-13, the Guardian reported.

Here’s everything you need to know about nitrous oxide.

What is nitrous oxide?

Nitrous oxide, commonly known as nos, laughing gas, or nitrous, is a colourless, non-flammable gas that, at room temperature, has a slightly sweet smell and taste.

It has significant medical uses, specifically in dentistry and surgery, for its anesthetic and pain-reducing qualities.

Its colloquial name, laughing gas, is due to the euphoric effects it has upon inhaling.

The drug was discovered by chemist Joseph Priestley in 1772, and has subsequently been the subject of myriad experiments and cartoons, and became a useful tool in medical settings to treat severe pain.

It also inactivates the vitamin B12, which can lead to neurological problems, as, “B12 is crucial in the production of myelin, which is the fatty sheath around nerves in your body,” explains Dr Trevor Pickersgill, a consultant neurologist at Cardiff and Vale University Health Board.

When B12 is inactivated by nitrous oxide, the myelin is no longer kept in good repair, which can cause “spinal-cord damage, which can be irreversible if untreated,” Pickersgill said.

What are the effects of nitrous oxide and is it safe?

Inhaling nitrous oxide can be fatal if you don’t get enough oxygen, which is known as hypoxia, explains the Alcohol and Drug Foundation.

According to the Alcohol and Drug Foundation, its short-term impacts include:

• euphoria

• numbness of the body

• sedation

• giddiness

• uncontrolled laughter

• unco-ordinated movements

• blurred vision

• confusion

• dizziness and / or light-headedness

• sweating

• feeling unusually tired or weak

• sudden death

Prolonged exposure to nitrous oxide can cause:

• memory loss

• vitamin B12 depletion (long-term depletion causes brain and nerve damage)

• ringing or buzzing in the ears

• incontinence

• numbness in the hands or feet

• limb spasms

• potential birth defects (if consumed during pregnancy)

• weakened immune system

• disruption to reproductive systems

• depression

• psychological dependence

• psychosis

Is nitrous oxide illegal?

At present, no, but it is expected that will soon change in the coming weeks. Current legislation bans the knowing or reckless supply of nitrous oxide for inhalation but campaigners say it is a “grey area” and the ;aw needs to be toughened up.

How long does nitrous oxide stay in your system?

Talk To Frank says the length of effects and how long the drug stays in your system depends on how much you’ve taken, your size and what other drugs you may have also taken.

A spokesman said: “Nitrous oxide is often taken in combination with other drugs. So its effects can be unpredictable, as it depends on what other drugs are being taken with it.

“It is a short acting drug which can lead to people to frequently re-dose and end up using more than they intended.”

Why are ministers planning to ban the sale of nitrous oxide?

Last year, doctors and police issued a warning over a rise in cases of nerve damage linked to the use of nitrous oxide.

Experts have revealed that, as the use of the drug has increased, so too have cases of spinal-cord and nerve damage, including paralysis.

Speaking to the Guardian last year, Dr Nikos Evangelou, an academic neurologist at the University of Nottingham, said: “There is no doubt that we have seen an increase of cases, as this was almost unknown last year and now [we] see cases weekly.

Nitrous oxide canisters can be legally obtained and, according to research, notifications of acute poisoning increased from three in 2011 to 32 in 2020.

Prime Minister Rishi Sunak cited the problem in a speech at new year on antisocial behaviour. He said that “nitrous oxide in children’s playgrounds… makes life miserable for so many”.