Drug Harm Reduction: Practical Safety Information for Young Adults Who Use Drugs

A Harm Reduction Approach

Drug use among young adults is a reality in most countries and social contexts, regardless of legal status. Abstinence is the only guaranteed way to avoid drug-related harm, and choosing not to use drugs is always a valid and wise choice. However, public health evidence consistently shows that harm reduction approaches, which provide accurate information to people who do use drugs in order to reduce death and serious injury, save more lives than approaches based purely on prohibition and deterrence.

This guide provides practical harm reduction information. It does not advocate for drug use or minimise the real risks involved. It provides information that helps people who choose to use drugs do so with greater awareness of those risks and with knowledge that can prevent the most serious outcomes.

The Most Significant Risk: Unknown Contents

The most dangerous aspect of illicit drug use is not the drugs themselves but the fact that street drugs are not manufactured to pharmaceutical standards and their contents are unknown. Pills sold as MDMA may contain little or no MDMA and may contain more dangerous substances. Cocaine is almost universally cut with other substances. Drugs sold as one thing may be entirely different compounds. Fentanyl and its analogues, extremely potent synthetic opioids, have been found contaminating drugs across many categories in numerous countries, and a dose that is indistinguishable from what surrounds it can be fatal. This contamination problem is the leading driver of drug overdose deaths in many countries and affects people who would never consider themselves opioid users.

Drug checking services, where available, test the actual contents of substances and can identify unexpected adulterants. Reagent test kits, available in many countries, allow basic testing of substances at home to confirm the presence or absence of certain compounds. Neither method provides a guarantee of safety, but both significantly reduce the risk of taking something entirely different from what was expected. Using these resources when they are available is one of the most impactful risk reduction steps a person can take.

Risks by Substance Category

MDMA and ecstasy: Risks include overheating, dehydration or conversely hyponatraemia from over-hydration, cardiovascular stress, serotonin syndrome if mixed with certain other substances, and psychological distress including anxiety and paranoia. Specific harm reduction practices include testing the substance, starting with a small amount and waiting to assess effects before taking more, maintaining moderate hydration rather than drinking excessive water, taking regular breaks from dancing in cool environments, and not mixing with alcohol, antidepressants, or stimulants.

Cocaine and stimulants: Risks include cardiovascular events including heart attack and stroke even in young people with no prior heart conditions, psychological effects including paranoia and anxiety, significant dependency risk, and the harms of adulteration. Nasal damage from snorted cocaine is cumulative and can be severe. Risks are significantly increased when mixed with alcohol.

Cannabis: Risks include triggering or worsening psychosis in vulnerable individuals, particularly those with personal or family history of psychotic illness; significant impairment of driving ability; dependency risk with regular use; and respiratory harms from smoking. Higher potency products carry greater risk of adverse psychological effects. Not mixing with tobacco when smoking is one harm reduction step that also removes nicotine dependency risk.

Ketamine: Risks include severe dissociative effects, the potential for accidents due to profound impairment, and with regular heavy use a distinctive and serious form of bladder and urinary tract damage called ketamine-induced uropathy that can require surgical intervention and is not fully reversible. The bladder damage is dose-dependent and associated with regular rather than occasional use, but can occur more quickly in some individuals than others.

Opioids: Risks include respiratory depression leading to overdose and death, and rapid development of physical dependency. These risks apply to prescribed opioids used outside their prescribed purpose as well as to illicit opioids. Fentanyl contamination of non-opioid drugs has made opioid overdose risk relevant to people who believe they are not using opioids. Naloxone, a medication that reverses opioid overdose, is available without prescription in many countries and everyone in environments where drugs are used should know where to access it and how to use it.

Recognising and Responding to Overdose

Drug overdose is a medical emergency. Signs of stimulant toxicity include rapid, irregular heartbeat, extreme agitation or paranoia, overheating, and in severe cases seizure or loss of consciousness. Signs of opioid overdose include unconsciousness or extreme drowsiness, very slow, shallow, or stopped breathing, blue lips or fingertips, and pinpoint pupils. Signs of MDMA toxicity include very high body temperature, confusion, muscle rigidity, and seizure.

For any suspected overdose: call emergency services immediately. Place the person in the recovery position if they are unconscious and breathing. Do not leave them alone. If naloxone is available and opioid overdose is suspected or possible, administer it and continue to monitor breathing. In many countries, Good Samaritan laws provide legal protection for people who call emergency services for a drug overdose, and you should not let fear of legal consequences prevent you from calling for help. A person whose life could be saved is more important than any other consideration.

Drug Interactions

Combining substances is one of the most significant drivers of drug-related death and serious harm. Alcohol combined with any central nervous system depressant, including opioids, benzodiazepines, and GHB or GBL, greatly increases the risk of respiratory depression and death. Combining stimulants places very high stress on the cardiovascular system. Combining MDMA with certain antidepressants, particularly MAOIs, can cause potentially fatal serotonin syndrome. Before taking any substance, understanding its interactions with other substances you may have taken or be taking is critically important harm reduction information.

Getting Help Without Fear

If you are concerned about your drug use, want to stop, or have experienced a concerning reaction, help is available without judgement. Drug and alcohol services in most countries operate with confidentiality and without automatic notification to police. You can access information, support, and treatment without your use necessarily becoming known to family, employers, or authorities. The priority of these services is your health and safety, not enforcement.