Heroin & opioids: the biggest danger is overdose.
A powerful physical and psychological addiction — and structured medical treatment saves lives.
What are opioids?
Opioids include heroin, opium and strong painkillers such as morphine and oxycodone. They cause fast physical dependence and slow breathing — which is what makes overdose fatal.
Signs that may point to use
- Pinpoint pupils and drowsiness
- Injection marks or hiding the arms
- Flu-like symptoms when going without
- Money problems and theft
Overdose signs — an emergency
- Slow or stopped breathing
- Blue lips or nails
- Unresponsiveness
Withdrawal and treatment
Withdrawal is painful (aches, diarrhoea, sweating, insomnia, cravings) but rarely life-threatening by itself. The real danger comes after: lower tolerance makes a return to use more dangerous. Treatment therefore includes medical supervision, may include medication at the physician's discretion, plus therapy and long follow-up.
How Restart helps
General educational content from the Restart team — not a substitute for a medical assessment. In an emergency, call emergency services immediately. · Last reviewed: November 2026
Medically reviewed byDr. Huthayfa BarhamMedical Director · Addiction psychiatristFAQ
Can people recover from heroin?
Why is relapse after detox dangerous?
How long does opioid detox take?
The first step is a conversation.
Tell us about your situation or a loved one's. We'll understand what's happening and guide you to the right path — in complete confidence.
The first conversation is free and fully confidential · no commitment