Drug Safety Information for Teenagers: What Young People and Parents Need to Know

Why This Information Matters

A significant proportion of teenagers in the UK will have some contact with illegal drugs before they finish secondary school. This is not a counsel of despair; it is a fact that informs how we should approach drug safety education. An approach that relies entirely on just say no is not serving young people who have already said yes, or who will be in situations where they need accurate information to make safer choices.

This is not a pro-drug guide. Drug use carries genuine and serious risks, and the safest choice is always to avoid illegal substances. But harm reduction, providing accurate information about risks and safer behaviours to people who may use drugs regardless, has a strong evidence base and saves lives. Parents and young people both deserve access to this information.

Cannabis

Cannabis is the most commonly used illegal drug among UK teenagers. It is a Class B drug and possession can result in up to five years imprisonment, supply up to 14 years. Beyond the legal risks, cannabis carries genuine health risks particularly for young people whose brains are still developing.

Regular cannabis use in adolescence is associated with significantly elevated risk of developing psychosis and schizophrenia spectrum disorders in adulthood, particularly for those with a family history of mental illness or genetic vulnerability. The high-potency cannabis (skunk) now most commonly available carries higher risk than older, lower-potency forms. Cannabis use is also associated with declining academic performance, increased anxiety, and in some young people the development of cannabis dependency.

Mixing cannabis with tobacco, which is common in the UK, adds the considerable harm of tobacco alongside the cannabis risks. Cannabis can also impair driving to a degree comparable with alcohol. It remains detectable in a drug test for several weeks after use.

MDMA and Ecstasy

MDMA (3,4-methylenedioxymethamphetamine), often sold as ecstasy tablets, is a Class A drug. Its effects include elevated mood, increased energy, heightened sensory experience, and feelings of closeness to others. Risks include overheating (hyperthermia), which is particularly dangerous when combined with dancing in a warm environment. Paradoxically, hyponatraemia (dangerously low sodium from drinking too much water) is also a risk, caused by MDMA's effect on water retention combined with overconsumption of water.

If someone takes MDMA and becomes unwell, it is a medical emergency. Call 999 without hesitation. Stigma around drug use can cause fatal delays in calling for help. Many festivals and venues have introduced welfare and harm reduction services. Using these resources is always the right choice.

The content of ecstasy tablets is entirely unknown. Pills sold as MDMA may contain no MDMA, partial MDMA, or potentially lethal substances including para-methoxymethamphetamine (PMMA) or fentanyl. Drug checking services available at some events can test substances before use.

Cocaine and Crack Cocaine

Cocaine is a Class A stimulant associated with short-term euphoria, increased energy, and decreased appetite. It is highly addictive and regular use can develop dependency relatively quickly. Physical risks include cardiovascular strain, increased blood pressure, and risk of heart attack even in young, healthy individuals. Cutting agents in cocaine include substances ranging from harmless to genuinely dangerous.

Crack cocaine is the freebase form of cocaine, smoked rather than snorted. It reaches the brain faster, producing a more intense but shorter high, with correspondingly faster development of dependency. Both forms carry significant addiction risk and serious physical health consequences with sustained use.

Ketamine

Ketamine is a Class B drug used medically as an anaesthetic. In recreational use, it produces dissociative effects at lower doses. Higher doses can cause the k-hole, a state of severe dissociation that leaves users unable to move or respond normally. At these doses, users cannot protect themselves if something goes wrong.

Long-term heavy ketamine use causes severe, irreversible damage to the bladder and urinary tract, sometimes requiring bladder removal. This is a consequence that is underemphasised in general awareness of the drug and is important for young people to understand.

Recognising Signs of Drug Use

Parents concerned about drug use should look for changes in behaviour and presentation: significant changes in friendships, deteriorating school performance, unexplained money needs or missing valuables, changes in sleep patterns, dilated or pinpoint pupils, unusual smells on breath or clothing, paraphernalia (rolling papers, small plastic bags, burnt foil, needles), and withdrawal from family life and previous interests.

Approaching the conversation with curiosity rather than accusation is more likely to open dialogue. If drug use is confirmed, the response should focus on safety and wellbeing, not punishment, which tends to drive behaviour underground rather than addressing it.

Where to Get Help

Talk to Frank (0300 123 6600 or talktofrank.com) provides free, confidential information about drugs for young people and their families. RELEASE provides legal advice and drug information. Addaction and Change Grow Live provide drug and alcohol support services across the UK. Your GP can provide confidential assessment and referral to specialist services for young people with concerns about their drug use.