What is it?
MDMA is usually sold as tablets or powder. Content and strength are frequently unknown, and products sold as MDMA may contain other substances.
Common forms
- Tablets
- Powder or crystal
- Capsules
How it affects the body
MDMA increases serotonin, dopamine and noradrenaline activity, affecting mood, temperature regulation and fluid balance.
Short-term effects
- Feelings of closeness and energy
- Jaw clenching and raised temperature
- Raised heart rate
- Anxiety or confusion in some people
Long-term effects
- Low mood in the days after use
- Sleep and memory difficulties
- Risks associated with repeated heavy use
Dependence and addiction
Dependence can develop when the body and brain adapt to regular use. It is not a moral failing or a lack of willpower. Signs people describe include needing more to get the same effect, difficulty cutting down, spending more time thinking about use, and continuing despite harm. Support is available at any stage — you do not need to have reached a crisis point.
Withdrawal
Stopping or reducing after regular use can cause withdrawal. Withdrawal varies between people and depends on how much and how long someone has used, their physical health and other substances involved. Some withdrawal can be medically serious, so it is safer to plan a reduction with a clinician or a drug and alcohol service rather than stopping abruptly alone.
Overdose risks
Overheating, confusion, seizures, collapse or being unable to stay awake require emergency help. Call 999 and tell them what was taken — this helps clinicians treat quickly.
Mixing substances
Mixing with other stimulants, alcohol or medicines affecting serotonin (including some antidepressants) can be dangerous.
Harm-reduction information
- Avoid mixing, especially with other stimulants or alcohol
- Take breaks from dancing and cool down
- Drink water in moderation — too much can also be harmful
- Never assume strength or content is known
- Stay with friends and tell someone what you have taken
When to seek urgent medical help
Call 999 if someone is unconscious or cannot be woken, is having difficulty breathing, has a seizure, has chest pain, becomes very confused or agitated, or you are worried they may have overdosed. For urgent advice that is not life-threatening, call NHS 111. You will not get someone into trouble by calling for medical help.
Treatment and recovery options
- Talking therapies and structured psychosocial support
- Community drug and alcohol services, including self-referral where available
- Medication-assisted treatment where clinically appropriate
- Medically supported withdrawal, arranged and monitored by clinicians
- Peer support and recovery communities
- Residential rehabilitation for some people, usually via assessment
- Support for related needs — mental health, housing, family and welfare
UK support resources
- NHS — health information and service finders (nhs.uk)
- Talk to FRANK — UK drug information service (talktofrank.com)
- Your local community drug and alcohol service — many accept self-referrals
- Local pharmacy teams, who can offer advice and signposting
Sources / references
This page is a plain-language summary written for education. For clinical or legal detail, use authoritative UK sources: NHS (nhs.uk), Talk to FRANK (talktofrank.com), NICE (nice.org.uk), UK Government and devolved government publications, and guidance from UK professional bodies. Each page on this site carries a review date, and we welcome corrections.