Short answer: Buprenorphine is a partial opioid agonist and one of the most effective treatments for opioid use disorder. It eases withdrawal and cravings, blocks other opioids, and has a ceiling on its breathing effect that makes it safer than full opioids. Since 2023, any clinician with a DEA registration for Schedule III can prescribe it, and it can be started by telemedicine.
Key takeaways
- What it is: Buprenorphine is a partial opioid agonist and a Schedule III controlled substance in the US.
- Main uses: Opioid use disorder; chronic pain.
- Timing: effects start in 30 to 60 minutes and last 24 hours or more.
- Most dangerous mix: Benzodiazepines and other sedatives, which can cause slowed breathing, overdose.
- Naloxone: it reverses an overdose (, higher doses may be needed).
- Dependence risk: Moderate.
- Legal route: only with a prescription from a DEA-registered clinician, filled by a licensed pharmacy.
What is buprenorphine?
Buprenorphine is approved to treat opioid use disorder, as daily tablets or films placed under the tongue (usually combined with naloxone to discourage injection) and as weekly or monthly injections given by a clinician. Lower-dose patches and films are approved for chronic pain.
As a partial agonist, buprenorphine activates opioid receptors enough to prevent withdrawal and cravings, but its effect on breathing levels off at higher doses. It binds very tightly, which blocks the effect of other opioids.
Quick facts
| Fact | Buprenorphine |
|---|---|
| Generic name | Buprenorphine (often combined with naloxone) |
| Brand names | Suboxone, Zubsolv, Sublocade, Brixadi; for pain: Butrans, Belbuca |
| Drug class | Partial mu-opioid agonist |
| US legal status | Schedule III, prescription only |
| Approved uses | Opioid use disorder; chronic pain (patch and buccal film) |
| Forms | Sublingual tablets and films, monthly and weekly injections, skin patch, buccal film |
| Onset | 30 to 60 minutes (sublingual) |
| Half-life | 24 to 42 hours |
| Broken down by | CYP3A4 |
How long does buprenorphine last?
- Starts working: 30 to 60 minutes
- Effects last: 24 hours or more
- Half-life: 24 to 42 hours
There is no set limit. Longer treatment is associated with lower relapse and death rates, and many people stay on it for years.
Timing varies with the dose, the form, how it is taken, liver and kidney function, age, and other drugs taken at the same time.
What are the biggest risks of buprenorphine?
Common side effects include constipation, headache, nausea, sweating, insomnia, and mouth numbness with films. Injections can cause pain and lumps at the injection site.
Precipitated withdrawal: taking buprenorphine while full opioids still occupy the receptors can cause sudden, intense withdrawal. This is unpleasant but not usually dangerous, and clinicians can manage it.
Serious risks include slowed breathing when combined with benzodiazepines, alcohol, or other sedatives, liver injury (rare), and dental problems with films and tablets dissolved in the mouth. The FDA advises rinsing with water and waiting an hour before brushing.
Warning: Combining buprenorphine with benzodiazepines or alcohol has caused fatal overdoses. Still, the FDA advises that people on both should not be denied buprenorphine treatment; the risk of untreated opioid use disorder is higher.
What should you never mix with buprenorphine?
| Combined with | What happens | Label guidance |
|---|---|---|
| Benzodiazepines and other sedatives | Slowed breathing, overdose | Use caution; do not deny treatment |
| Alcohol | Additive sedation | Avoid |
| Full opioid agonists (oxycodone, heroin, fentanyl) | Blocked effect; precipitated withdrawal if buprenorphine is started too soon | Wait for withdrawal before starting |
| Ketoconazole, ritonavir, clarithromycin | Raise buprenorphine levels | Monitor |
| Rifampin, carbamazepine | Lower buprenorphine levels | May need higher dose |
Check any combination with the DoseUses combination checker or ask a pharmacist.
What are the signs of a buprenorphine overdose, and what should you do?
Buprenorphine alone rarely causes fatal overdose in adults because of its ceiling effect, but overdose can occur with sedatives or alcohol and in children who swallow a film or tablet. Signs are extreme sleepiness, slow breathing, and pinpoint pupils.
If someone may have overdosed
- Call 911 if the person is unresponsive, cannot be woken, has blue or gray lips, or is breathing slowly or not at all.
- Give naloxone (Narcan or a generic nasal spray, sold without a prescription) into one nostril. If there is no response after 2 to 3 minutes, give another dose.
- If you are trained, give rescue breaths. Otherwise place the person on their side so they do not choke.
- Stay with them. Naloxone can wear off before buprenorphine does, so the overdose can return even after the person wakes up.
- Most states have Good Samaritan laws that protect people who call 911 for an overdose from some drug charges.
What is buprenorphine withdrawal like, and how long does it last?
Buprenorphine causes physical dependence, but its long half-life means withdrawal starts later and is usually milder than with full opioids.
- Days 1 to 3Symptoms beginRestlessness, aches, runny nose, sweating, poor sleep.
- Days 3 to 10Peak symptomsStomach upset, diarrhea, anxiety, cravings; usually milder than oxycodone or heroin withdrawal.
- WeeksLingering symptomsLow mood, poor sleep, and cravings may last weeks.
See the withdrawal timelines and the full buprenorphine withdrawal guide.
Is buprenorphine legal?
In the United States, buprenorphine is a Schedule III controlled substance. The only legal way to get it is with a prescription from a clinician registered with the Drug Enforcement Administration (DEA), filled by a licensed pharmacy. Depending on state law, that can be a physician, nurse practitioner, or physician assistant.
- Refills: a Schedule III prescription can be refilled up to five times within six months of the date it was written. After that, a new prescription is needed.
- Telehealth: federal flexibilities let DEA-registered clinicians prescribe Schedule II to V medicines after a telemedicine visit, without a prior in-person exam, through December 31, 2026. A permanent DEA rule was under final review in late 2026. State rules can be stricter.
- Monitoring: prescribers and pharmacists in most states check a prescription drug monitoring program, a database of controlled-substance prescriptions, before prescribing or dispensing.
Outside the United States
| Country | Status |
|---|---|
| United Kingdom | Class C; prescription only |
| Canada | Schedule I; prescription only |
| Australia | Schedule 8; opioid dependence treatment program |
| International | Schedule III of the 1971 Convention on Psychotropic Substances |
Frequently asked questions about buprenorphine
What is the difference between Suboxone and Subutex?
Suboxone combines buprenorphine with naloxone, which discourages injection. Subutex was buprenorphine alone, now sold as generic mono-product tablets, often used in pregnancy.
Can I start buprenorphine by telehealth?
Yes. A DEA rule allows buprenorphine for opioid use disorder to be started by telemedicine, including audio-only calls, for an initial six-month supply.
Does buprenorphine get you high?
In people with opioid tolerance, therapeutic doses relieve withdrawal and cravings without a significant high. People with no tolerance can feel strong effects.
How long should treatment last?
There is no set limit. Longer treatment is associated with lower relapse and death rates, and many people stay on it for years.
Is buprenorphine safe in pregnancy?
Yes. Buprenorphine and methadone are recommended treatments for opioid use disorder in pregnancy.
What is precipitated withdrawal?
Sudden severe withdrawal caused by starting buprenorphine while other opioids are still active. Waiting until mild withdrawal begins, or using a specialized start, prevents it.
Sources
- Suboxone (buprenorphine) prescribing information, DailyMed, US National Library of Medicine.
- Waiver Elimination (MAT Act), Substance Abuse and Mental Health Services Administration.
- FDA warns about serious risks and death when combining opioid pain or cough medicines with benzodiazepines, US Food and Drug Administration, 2016.
- Information about naloxone and nalmefene, US Food and Drug Administration.
- Controlled Substance Schedules, DEA Diversion Control Division.
- 21 CFR 1306.22, Refilling of prescriptions (Schedules III and IV), Electronic Code of Federal Regulations.
- Prescribing controlled substances via telehealth, US Department of Health and Human Services.
- BeSafeRx: Your Source for Online Pharmacy Information, US Food and Drug Administration.
This guide summarizes the sourced DoseUses Buprenorphine profile, written from FDA labels, DEA rules, and federal health agencies. It is educational and is not medical advice. Last updated October 5, 2026.
