UK Ketamine Use

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KEY TAKEAWAYS

  • Rising annually, with 4.1% of people aged 16–59 reporting lifetime use in 2025, the highest level recorded [1]
  • Linked to ketamine bladder syndrome, “K-Cramps”, acute kidney injury, and cognitive impairment in up to 60% of regular users (e.g. 5x p/wk) [2]
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Legal Classification Of UK Ketamine Use

Since 2014, ketamine has been a Class B drug in the UK under the Misuse of Drugs Act 1971, after the ACMD 2013 review highlighted the harmful consequences (e.g. biliary sepsis) of chronic ketamine use [3].

The maximum penalty for possessing ketamine is up to 5 years in prison, an unlimited fine, or both, and the maximum penalty for supplying ketamine is up to 14 years in prison, an unlimited fine, or both [4].

Legal penalties for possessing and supplying ketamine depend on the quantity found and other aggravating (e.g. previous crimes) or mitigating factors (e.g. cooperation with UK police). 

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Why Is Ketamine Use Rising In The UK? 

 UK ketamine use has risen by 60% since 2015 because [5]:

  • Ketamine, which is legally manufactured and distributed for veterinary medicine, is diverted into illicit markets, and users believe “A little bit can’t harm me that much” because “It’s a tranquiliser” [6]
  • 32% consider ketamine “easier” to buy: “It is just very available, isn’t it?” compared to other drugs (e.g. heroin, cocaine) due to global supply chain issues leading to shortages in the UK [7]
  • Ketamine is cheaper (£10–30/g) than other “club" drugs (e.g. cocaine > £40/g), increasing access for people with limited disposable income and encouraging users to “just get a bit more” for the price [8]
  • Drug dealers discreetly advertise the drug on popular social media apps (e.g., Snapchat), reaching large, mainly younger audiences who arrange purchases privately through direct messaging
  • Widespread clinical use of esketamine therapies has contributed to the destigmatisation of ketamine, encouraging individuals to use the drug inappropriately to manage “thoughts and feelings” [9]
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Ketamine is commonly linked to party settings (e.g. festivals), where experimentation with dissociative anaesthetic drugs is often encouraged among 16-24 year olds in attendance

In May 2025, the UK’s first NHS Ketamine Clinic for Children and Young People (CYP) opened in response to:

  • The growing demand for specialist treatment services needed to address persistent bladder issues (e.g. incontinence) in CYP who report taking ketamine every weekend as a “ritual” with “mates” [10]
  • The rise of ketamine misuse among young people (e.g. +38% 11-15 y/o in 2 years), as one substance misuse advocacy worker explained, “They're using it at half ten in the morning in the toilets” [11][12]
  • A 56% increase (from year ending March 2023 to March 2025) in the number of young people (< 18 y/o) accessing drug and alcohol services after abusing ketamine in the past year [13]

Geographical Areas Affecting UK Ketamine Use

England and Wales have the highest number of people using ketamine, with 4.1% of 16–59 y/o reporting lifetime use in 2025, compared to 2.6% of 15-64 y/o in Northern Ireland, and 1.2% of over-16s in Scotland [1][14][15].

Geographical variations in ketamine consumption across the UK can be attributed to:

  • England's growing population (approx 54 million vs Scotland = 5.5 million) and extensive nightlife scenes in large metropolitan cities (e.g. London), increasing exposure and cultural normalisation
  • Less extensive club scenes, weaker distribution networks, and preferences for class A “club" drugs in Northern Ireland (i.e., 3 – 4x higher rates of cocaine and ecstasy use) [14]
  • Restricted access in Scotland, a predominantly rural country, with a drug market dominated by cannabis, heroin, and cocaine (e.g. past-year use = 5.6% for cannabis vs 0.3% for ketamine) [15]

The Home Office Wastewater Analysis for Narcotics Detection programme (phase 3) highlighted the geographical variations in ketamine consumption between August 2024 and July 2025:

  • Areas with high estimated consumption were Liverpool, Brighton, Portsmouth, Norfolk, and Bristol
  • Areas with low estimated consumption were the West Midlands, the East Midlands, and Scotland
  • Urban areas like London, Manchester, Liverpool, and Brighton are generally considered “notable hotspots” for "party" drug use (including ketamine, MDMA, and cocaine) [16].
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UK Ketamine Consumption Vs The Rest Of The World

Country

Ketamine Use Statistics

Why?

UK

0.8% of 16 - 59 y/o in 2025 [1]


Lifetime use = 6.5% of 16 - 24 y/o [1]

Big nightlife/festival culture = normalised by young people 


Cheap (£10-30/g) and “easy” to buy [5]

US

Illicit use = 0.3% Vs prescribed use = 1.2% of over 18s in 2024 [17]

Mainly associated with clinical use due to perceived mental health benefits


Stronger focus on other drug types (e.g. opioids)

Australia

 

1.4% of over 14s between 2022 - 2023  [18]

Similar festival/club scene to the UK + commonly used (4.2%) by 20-29 y/o [18]

Hong Kong

11.2% of over 21s in 2024 [19]

Considered a “major global hotspot” & 4x lower retail price than other party drugs (e.g. cocaine) [20]

China

29,733 registered users in 2024 (<0.5% general population) [21]


Declining use for 6 consecutive years [22]

Strict drug laws + penalties deter widespread use


2 tonnes seized in 2024 (2x increase from 2023) [22]

Singapore

Lifetime use = 1.1% of over 21s [23]

Limited nightlife + strict drug laws (>3000 tablets + 8.5kg seized annually) [24]


Primary drugs are methamphetamine and heroin

Brazil

0% addiction rate found in the general population in 2015 [25]

Considered “probably impossible” to get by 7% of 12-65 y/o [26]


Less culturally embedded + drug market dominated by cocaine and crack cocaine

Prevalence Of Ketamine-Related Medical Issues In The UK

In the UK, around 25% of ketamine users experience chronic abdominal pain, often associated with nausea/vomiting and referred to as “K-cramps” [27]:

  • “It’s like someone has both their hands on your kidneys, twisting them and squeezing them, and someone else has their hands in your stomach, twisting and squeezing”
  • “I couldn’t get off the floor, first week I had them. And I got them quite a lot.” - 24-year-old male, Stockport, UK [28]

Ketamine-induced bladder damage occurs in up to 60% after chronic use (i.e. 5x p/wk), leading to urinary frequency, urgency, pain when urinating, blood in urine, and reduced capacity (e.g., <100 mL) [2].

In the UK, mental health conditions are common (21%) in 14 - 24-year-olds who use ketamine, as one individual explained, “It destroyed my mental health. I was a wreck, paranoia, anxious, depressed.” [29][30]

Around 55% of people seeking treatment for ketamine addiction have a diagnosed mental health disorder, alongside other physical and psychological symptoms (e.g. headaches, brain fog) linked to heavy use (e.g. 10g/d) [31].

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About the author

Mischa Ezekpo

Mischa Ezekpo has a Bachelors degree in Psychology from Northumbria
University, and a Masters degree in Childhood Development and
Wellbeing, from Manchester Metropolitan University. Since 2018, Mischa
has written and published work on Addiction, Mental Health, Depression, and Eating Disorders. Content reviewed by Laura Morris (Clinical Lead).

Last Updated May 1, 2026