If someone may be overdosing, call 911 and give naloxone. Nasal naloxone is available over the counter at pharmacies.
Quick answer: Signs of heroin addiction include pinpoint pupils, heavy drowsiness or “nodding off,” track marks or long sleeves in warm weather, burnt spoons, foil, syringes or small baggies, flu-like withdrawal symptoms, and money and relationship problems. Today, heroin is often mixed with or replaced by fentanyl, which makes every use risky.
How we put this guide together
The Ranch, a licensed program in Yuba City, California, treats heroin and opioid addiction with detox, residential care and medication-assisted treatment. This guide draws on research about opioid treatment and overdose risk.
Signs at a glance
| Type of sign | What you might notice |
| Physical | Pinpoint pupils, nodding off, slowed breathing, itching |
| Injection signs | Track marks, bruises, long sleeves in heat |
| Paraphernalia | Burnt spoons, foil, syringes, cotton balls, small baggies |
| Withdrawal | Sweating, aches, vomiting, diarrhea, anxiety |
| Behavior | Secrecy, missing money, lost jobs, isolation |
1. Pinpoint pupils and nodding off
Opioids shrink pupils and cause heavy sedation. Drifting in and out of consciousness mid-conversation is a common sign.
2. Slowed breathing
Shallow, slow breathing is a warning sign of overdose. If someone can’t be woken, call 911 and give naloxone.
3. Track marks and covering up
Injection marks on arms, hands or legs, bruises or infections, and long sleeves in warm weather can signal injection use.
4. Paraphernalia
Burnt spoons or foil, syringes, cotton balls, lighters, tourniquets and small bags or balloons are common. Don’t touch residue with bare hands.
5. Flu-like withdrawal
Between uses, people may experience sweating, aches, runny nose, yawning, vomiting, diarrhea and intense cravings.
6. Money and life falling apart
Missing money, stolen items, job loss, legal trouble and isolation often follow as addiction progresses.
7. Fentanyl changes the risk
Heroin is often mixed with or replaced by fentanyl, which is far more potent. Never use alone, and keep naloxone on hand.
8. Medication saves lives
A major 2017 BMJ review found that retention in methadone or buprenorphine treatment is associated with substantial reductions in mortality, and that the periods right after starting and stopping treatment carry higher risk. Medication-assisted treatment is a key part of recovery from heroin addiction.
9. Treatment starts with safe detox
Heroin withdrawal is painful, and detox alone has high relapse and overdose risk. Medical detox followed by residential care and medication-assisted treatment offers a safer path. The Ranch offers heroin addiction treatment with detox and MAT. Call (530) 643-4495.
FAQ
What are the signs of heroin use?
Signs include pinpoint pupils, nodding off, slowed breathing, track marks, paraphernalia like burnt spoons and syringes, flu-like withdrawal symptoms, and money or relationship problems.
Is heroin mixed with fentanyl?
Often, yes. Fentanyl is frequently mixed into or sold as heroin, greatly increasing overdose risk.
What is the best treatment for heroin addiction?
Medication-assisted treatment with buprenorphine or methadone, combined with counseling and support, is associated with lower mortality and better outcomes.
Can you detox from heroin at home?
It’s not recommended. Withdrawal is painful, and detox without follow-up treatment raises relapse and overdose risk. Medical detox with ongoing care is safer.
Where can I get naloxone?
Nasal naloxone is available over the counter at most pharmacies. Keep it on hand if anyone you know uses opioids.