Warning

Chemsex is the use of drugs to enhance sexual experiences, generally within the sexual networks of some gay, bisexual and other men who have sex with men.  Chemsex refers to the use of drugs, often crystal meth (methamphetamine), GHB (gamma-hydroxybutyrate) and Mephedrone. During sex these drugs can intensify sexual pleasure but may also lead to higher risk activities for a persons sexual health and personal safety. 

Why might people be involved in chemsex?

Enhanced sexual experience: The substances generally used in chemsex can increase sexual desire and sensation.

Social belonging and acceptance: People may find belonging and intimacy that they don't feel able to access in other areas of their lives. 

Reducing inhibition and increasing confidence: Substances used in chemsex may reduce sexual inhibitions and increase confidence to participate in sexual activity. 

 

Risks:

Chemsex can lead to unprotected sex which increases the risk of sexually transmitted infections and blood borne viruses. Injecting substances during chemsex, known as 'slamming' can increase the likelihood of risks related to sharing injecting equipment.

Overdose: mixing drugs or using high doses can lead to overdose and even death

Mental health: chemsex can contribute to poor mental health outcomes for people who are involved.

Addiction: frequent chemsex could lead to dependency on the drugs used.

Consent: the effects of drugs used may impact a persons ability to consent to sexual activity. 

Seeking support

Waverley Care: Chemsex Website

Kinder Stronger Better: Alcohol, Drugs and the LGBTQ+ Community Website

We are With You: Chemsex: How to stay safer Website

Terence Higgins Trust: Understanding chemsex Website

Alcohol and Drug Recovery Services: Greater Glasgow & Clyde Alcohol & Drug Recovery Services Website

Scottish Drugs Forum: Offers training and support programs for frontline workers. Online training around broader LGBTQI+ people and substance use is available at SDF Training Website

Editorial Information

Last reviewed: 02/03/2026

Next review date: 02/03/2027

Author(s): Chris Flynn.

Author email(s): chris.flynn@nhs.scot.

Approved By: Health Improvement Manager (Sexual Health)

Reviewer name(s): Chris Flynn.