Make safety advice usable
Prioritise a few actions, use concrete language and put prompts where the decision happens. Rehearse the response rather than relying on recall under stress.
Depressant combinations
Combining opioids, alcohol, benzodiazepines, GHB/GBL or other sedating drugs can increase the risk of dangerous respiratory depression. Opioid overdose response should include naloxone access and training where appropriate.
Mixing, sequence and uncertainty
Risk is shaped by more than drug names. Ask what was taken first, what was added later, how much time passed and whether the contents were known. When the exact substance is uncertain, plan for the effects and emergency risks that are actually present.
Tolerance changes after a break
After a period of reduced use or abstinence, tolerance can fall. Returning to a previously familiar amount can carry substantially greater overdose or other acute risk, especially with opioids and other depressant drugs.
Stimulants
Cocaine and other stimulants can increase heart rate, blood pressure, anxiety, overheating, sleep loss and psychosis risk. Chest pain, collapse, seizure, severe confusion or serious overheating require urgent medical help.
Cannabis and ketamine
Cannabis effects vary and can include anxiety, memory problems or dependence. Ketamine can impair coordination and awareness and repeated use can damage the bladder and urinary tract. Seek healthcare for persistent pain, urinary symptoms or other concerning physical changes.
Withdrawal can be a medical risk
Sudden withdrawal from dependent alcohol, benzodiazepine or GHB/GBL use can be dangerous. Get clinical advice rather than attempting abrupt withdrawal alone.
Evidence and scope
This page is educational and does not diagnose, replace individual clinical assessment, treatment, detoxification advice, safeguarding procedures or emergency care. Content is grounded in the 2026 publication and prioritises UK guidance and reputable evidence sources. See the editorial and evidence policy for scope and updates.
Read the editorial & evidence policy