Opioid Addiction: Signs, Withdrawal, Overdose and Treatment

What opioid addiction is, in plain terms

Opioids attach to receptors in the brain and spinal cord that control pain and reward. They dull pain and produce a strong sense of relief. Used repeatedly, the brain adapts: it produces less of its own calming chemistry, so the same dose stops working and the person needs opioids to feel normal rather than to feel good. The National Institute on Drug Abuse classifies the result as a chronic, treatable brain condition.

The drugs this page covers

• Prescription painkillers: oxycodone, hydrocodone, morphine, codeine, tramadol.
• Fentanyl, both the medical form and the illicit form now found in most street pills and powders.
• Heroin, which many people move to after prescription supply stops.
• Methadone and buprenorphine, which treat the condition but can also be misused.

The single biggest change in the last decade is counterfeit pills. Tablets sold as oxycodone or Xanax are frequently pressed fentanyl, and the dose varies pill to pill. That is why an overdose can happen to someone who has used the same amount safely for months.

Dependence is not the same as addiction

• Dependence: the body has adapted, so stopping causes withdrawal. This happens to many pain patients and is expected.
• Tolerance: the same dose has less effect over time. Also physical, also expected.
• Addiction: use continues despite harm, with loss of control, craving and life consequences.

Signs of opioid addiction

Opioid problems often hide behind a legitimate prescription, which is why the earliest signs are behavioral rather than physical.

1. Taking more than prescribed, or taking doses earlier than scheduled.
2. Running out before a refill is due, more than once.
3. Seeking prescriptions from more than one doctor or urgent care.
4. Crushing, chewing, snorting or injecting a medication meant to be swallowed.
5. Using opioids for stress, sleep or low mood rather than pain.
6. Strong cravings, and anxiety about the supply running out.
7. Withdrawal symptoms between doses: sweating, chills, restlessness, stomach upset.
8. Continuing use after it has damaged work, money or relationships.

Physical signs others may notice

• Pinpoint pupils, drowsiness or nodding off mid-conversation.
• Slowed, shallow breathing, especially during sleep.
• Constipation, itching and unexplained nausea.
• Flu-like symptoms that appear and disappear on a schedule.
• Withdrawal from family, new secrecy about phone or money.

Overdose: how to recognize it and what to do

An opioid overdose kills by stopping breathing. It usually takes minutes, not seconds, which means a bystander with naloxone can reverse it. Naloxone is available without a prescription in every US state, including over the counter as a nasal spray. The SAMHSA overdose prevention guidance is the reference used by most US programs.

1. Call 911 first. Say the person is not breathing.
2. Give naloxone in one nostril. If there is no response in 2 to 3 minutes, give a second dose.
3. Start rescue breathing or chest compressions if trained.
4. Stay with the person. Naloxone wears off in 30 to 90 minutes and the overdose can return.
5. Put them on their side once breathing resumes, so they do not choke.

Opioid withdrawal: the timeline

Opioid withdrawal is rarely life threatening on its own, but it is intensely uncomfortable and is the reason most unassisted attempts fail. Dehydration from vomiting and diarrhea is the main medical risk, and the loss of tolerance afterwards is the main mortal risk.

The long tail of low mood and disturbed sleep has a name and a shape. We cover it in how long post-acute withdrawal really lasts.

Treatment that works, ranked by evidence

Medication for opioid use disorder has better outcome data than most treatments in general medicine. Programs that offer medication keep people alive at roughly twice the rate of programs that do not, according to NIDA research on medications for opioid addiction.

What to pair medication with

• Cognitive behavioral therapy for the triggers and thinking patterns behind use.
• Contingency management, which has strong data for stimulant and opioid use alike.
• Peer recovery support and mutual aid groups, in person or online.
• Naloxone in the home, for as long as anyone in the household uses opioids.
• Treatment for pain, depression or PTSD alongside, not after.

Levels of care, from lightest to most intensive

1. Office-based buprenorphine through a primary care doctor or telehealth clinic.
2. Opioid treatment program for methadone with structured dosing.
3. Intensive outpatient, around 9 to 20 hours a week while living at home.
4. Partial hospitalization, a near full-time daytime program.
5. Residential treatment, 24-hour care, best when it continues medication rather than stopping it.

What treatment costs and how to pay for it

Federal parity law requires most health plans to cover substance use treatment on a par with other medical care, and Medicaid covers medication for opioid use disorder in every state.

• Insurance: call the behavioral health number on the back of the card and ask for in-network buprenorphine prescribers.
• Telehealth: many clinics start buprenorphine after a video appointment, often within 24 hours.
• Sliding scale: community health centers set fees by income.
• State funding: block grant programs cover people without insurance.
• Free: naloxone is distributed at no cost by health departments and harm reduction programs in most states.

The federal locator at FindTreatment.gov filters by medication offered and payment accepted, so you can rule out unsuitable programs before calling.

What recovery looks like month by month

There is no medal for stopping medication early. Tapering is a decision to make with a clinician when life is stable, not during a crisis. If you are supporting someone through this, read how to support a loved one without enabling.

How to get help today

1. Call the SAMHSA National Helpline at 1-800-662-4357. Free, confidential, 24 hours a day, English and Spanish.
2. Search FindTreatment.gov for buprenorphine and methadone providers by zip code.
3. Get naloxone from a pharmacy, health department or harm reduction program, and keep it where others can find it.
4. Book a doctor or telehealth appointment and ask specifically about starting buprenorphine.
5. Never use alone. If you do, call an overdose response line or leave the door unlocked.

Frequently asked questions