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Suboxone (Buprenorphine/Naloxone): Uses, Dosage, Side Effects, Warnings & FAQ
Suboxone (sub-OX-own)
Suboxone® is a prescription medication that contains buprenorphine (a partial opioid agonist) and naloxone (an opioid antagonist). It is used as part of a comprehensive treatment plan for opioid use disorder (OUD). Suboxone helps reduce opioid cravings and withdrawal symptoms while lowering the risk of misuse by injection because of the naloxone component. It should be used alongside counseling, behavioral therapy, and ongoing medical care.
Pronunciation
Suboxone – sub-OX-own
Generic Name
Buprenorphine / Naloxone
Brand Names
- Suboxone®
- Generic buprenorphine/naloxone
Related medications include:
- Subutex® (buprenorphine only; no longer widely marketed in many countries)
- Zubsolv®
- Bunavail®
- Sublocade® (extended-release buprenorphine injection)
- Brixadi® (extended-release buprenorphine injection)
Dosage Forms
Suboxone is available as:
- Sublingual film
- Sublingual tablet (generic formulations in some regions)
Common strengths include:
Buprenorphine / Naloxone
- 2 mg / 0.5 mg
- 4 mg / 1 mg
- 8 mg / 2 mg
- 12 mg / 3 mg
Availability varies by country.
Drug Class
- Partial opioid agonist
- Opioid dependence treatment medication
- Medication for opioid use disorder (MOUD)
What Is Suboxone?
Suboxone is a medication used to treat opioid use disorder. It helps reduce withdrawal symptoms and cravings while lowering the risk of misuse compared with full opioid agonists. It is intended to be part of a comprehensive treatment program that may include counseling, behavioral therapy, and recovery support.
What Is Suboxone FDA-Approved For?
Suboxone is FDA-approved for:
- Treatment of opioid use disorder (OUD)
How Does Suboxone Work?
Suboxone contains two active ingredients:
Buprenorphine
- Partially activates opioid receptors
- Reduces cravings
- Relieves withdrawal symptoms
- Produces less respiratory depression than full opioid agonists at therapeutic doses
Naloxone
- Has minimal effect when taken under the tongue as directed
- Discourages misuse by injection because it can precipitate withdrawal when injected in opioid-dependent individuals
Important Information
Before taking Suboxone:
- Use only as prescribed.
- Do not combine with alcohol or other sedating drugs unless instructed by your healthcare provider.
- Keep out of reach of children.
- Continue counseling or behavioral therapy if recommended.
- Never share your medication.
Boxed Warning
Buprenorphine-containing products carry important warnings regarding:
- Life-threatening respiratory depression, especially when combined with benzodiazepines or other CNS depressants
- Risk of misuse and dependence
- Accidental exposure, particularly in children, which can be fatal
Warnings
Suboxone may cause:
- Drowsiness
- Respiratory depression
- Liver problems
- Low blood pressure
- Allergic reactions
- Opioid withdrawal if started too soon after other opioids
Before Taking This Medicine
Tell your healthcare provider if you have:
- Liver disease
- Breathing disorders
- Head injury
- Adrenal gland disorders
- Alcohol use disorder
- Pregnancy
- Breastfeeding
- Any history of allergic reactions to buprenorphine or naloxone
Provide a complete list of all prescription medications, over-the-counter medicines, vitamins, and supplements.
How Should I Take Suboxone?
Take Suboxone exactly as prescribed.
General recommendations:
- Place the film or tablet under the tongue until it dissolves completely.
- Do not chew or swallow the medication whole.
- Avoid eating or drinking until it has dissolved.
- Take it at the same time each day when possible.
Dosing Information
Suboxone treatment generally includes:
Induction Phase
Treatment begins after objective opioid withdrawal has started to reduce the risk of precipitated withdrawal.
Stabilization Phase
The dose is adjusted until cravings and withdrawal symptoms are well controlled.
Maintenance Phase
A stable daily dose is continued as part of a comprehensive treatment plan.
The exact dose varies by individual and should be determined by the treating clinician.
What Happens If I Miss a Dose?
If you miss a dose:
- Take it when you remember unless it is almost time for your next scheduled dose.
- Do not take two doses at once.
If multiple doses are missed, contact your healthcare provider for guidance.
What Happens If I Overdose?
An overdose is a medical emergency.
Symptoms may include:
- Severe drowsiness
- Slow or stopped breathing
- Blue lips or fingertips
- Pinpoint pupils
- Loss of consciousness
Call emergency medical services immediately if an overdose is suspected.
What Should I Avoid While Taking Suboxone?
Avoid:
- Alcohol
- Benzodiazepines unless specifically prescribed together and monitored
- Other opioids unless directed by your healthcare provider
- Driving until you know how Suboxone affects you
- Sharing your medication
Suboxone Side Effects
Common Side Effects
- Headache
- Constipation
- Nausea
- Sweating
- Difficulty sleeping
- Mouth irritation (film formulations)
- Dizziness
- Fatigue
Serious Side Effects
Seek emergency medical attention if you develop:
- Difficulty breathing
- Severe allergic reaction
- Fainting
- Liver problems (yellow skin or eyes, dark urine)
- Severe drowsiness
- Confusion
What Other Drugs Will Affect Suboxone?
Drug interactions may occur with:
- Benzodiazepines
- Alcohol
- Opioid pain medications
- Sleeping medications
- Muscle relaxants
- Certain antidepressants
- Antifungal medications
- HIV medications
- Some antibiotics
Always tell your healthcare provider about every medication and supplement you take.
Storage
Store Suboxone:
- At room temperature
- In its original packaging
- Away from moisture and heat
- Locked away from children and pets
Unused medication should be disposed of according to local recommendations or drug take-back programs.
Frequently Asked Questions
What Is Suboxone Used For?
Suboxone is used to treat opioid use disorder (OUD) by reducing withdrawal symptoms and cravings as part of a comprehensive treatment program.
How Long Does Suboxone Stay in Your System?
Buprenorphine has a relatively long elimination half-life, generally 24 to 42 hours, though it can vary between individuals.
It may remain detectable for several days after the last dose, depending on factors such as metabolism, kidney and liver function, dosage, and duration of use.
How Long Does Suboxone Block Opiates?
Buprenorphine binds strongly to opioid receptors, which can reduce the effects of other opioids for approximately 24 hours or longer after a dose. The exact duration varies depending on the individual’s dose, metabolism, and other factors.
Does Suboxone Show Up on a Drug Test?
It depends on the test.
- Routine opioid screening panels may not detect buprenorphine.
- Specialized drug tests specifically designed to detect buprenorphine can identify it.
Testing methods vary by laboratory.
How Long Does Suboxone Withdrawal Last?
Withdrawal experiences vary.
Early symptoms may begin within 1 to 3 days after the last dose, often peak over several days, and gradually improve. Some people may experience lingering symptoms for longer. The duration depends on factors such as dose, length of treatment, and individual physiology.
Do not stop Suboxone abruptly without medical guidance.
What Happens If You Take Opiates While on Suboxone?
Buprenorphine binds tightly to opioid receptors and may reduce or block the effects of many other opioids. Attempting to overcome this effect by taking larger amounts of opioids is dangerous and can increase the risk of overdose, especially if Suboxone is stopped or combined with other sedating substances. Any use of opioids while taking Suboxone should be discussed with the treating healthcare provider.
How Long Should You Wait Before Taking Suboxone?
Suboxone should generally be started after objective signs of opioid withdrawal have begun. Starting it too soon after using certain opioids can trigger precipitated withdrawal.
The appropriate waiting period depends on the specific opioid previously used (for example, short-acting versus long-acting opioids) and should be determined by a qualified healthcare professional.
Does Suboxone Help With Pain?
Suboxone is approved for opioid use disorder, not as a routine pain medication. However, buprenorphine itself has pain-relieving properties, and other buprenorphine formulations may be prescribed for chronic pain in appropriate situations.
How Long Does It Take for Suboxone to Start Working?
Many people begin to experience relief from opioid withdrawal symptoms within 30 to 60 minutes after taking the first appropriate dose, with continued improvement over the following hours.
Subutex vs. Suboxone – What’s the Difference?
Subutex
- Contains buprenorphine only
- No naloxone component
- Used in certain clinical situations
Suboxone
- Contains buprenorphine plus naloxone
- Naloxone helps discourage misuse by injection
- Commonly used for maintenance treatment of opioid use disorder
Your healthcare provider will determine which formulation is appropriate.
Is Suboxone a Controlled Substance?
Yes.
Suboxone is classified as a Schedule III controlled substance in the United States because it has medical uses but also carries a potential for misuse and dependence.
Is Suboxone an Opioid?
Buprenorphine is a partial opioid agonist, meaning it acts on opioid receptors differently from full opioid agonists such as morphine or oxycodone. Suboxone is used therapeutically to help treat opioid use disorder under medical supervision.
Can You Drink Alcohol While Taking Suboxone?
Alcohol should generally be avoided while taking Suboxone because combining the two can increase the risk of excessive sedation, respiratory depression, and overdose.
Can You Drive While Taking Suboxone?
Suboxone may cause drowsiness or dizziness, especially when treatment is started or doses are adjusted. Do not drive or operate heavy machinery until you know how it affects you.
Does Suboxone Cause Constipation?
Yes.
Constipation is one of the more common side effects. Staying hydrated, eating enough dietary fiber, and discussing preventive measures with your healthcare provider may help.
Does Suboxone Cause Weight Gain?
Weight gain is not among the most common side effects, although some individuals report changes in weight during treatment. Many factors can contribute to weight changes, including recovery from opioid use disorder and lifestyle changes.
Can You Take Pain Medication While on Suboxone?
Management of acute pain in people taking Suboxone requires individualized medical planning. Do not start or stop opioid pain medications without guidance from your healthcare provider, as treatment may need to be adjusted.
Is Suboxone Addictive?
Suboxone can lead to physical dependence, which is different from addiction. When used as prescribed as part of treatment for opioid use disorder, it is an evidence-based therapy that helps many people reduce illicit opioid use and improve recovery outcomes. Misuse can still occur, which is why careful medical supervision is important.
Can You Stop Suboxone Suddenly?
Stopping Suboxone suddenly can cause withdrawal symptoms and increase the risk of relapse. If treatment is being discontinued, healthcare providers generally recommend a gradual taper based on the individual’s circumstances.
How Long Can You Stay on Suboxone?
There is no single recommended treatment duration. Some people use Suboxone for months, while others benefit from longer-term maintenance. Decisions about continuing or tapering treatment should be made collaboratively with a qualified healthcare provider based on recovery progress and individual needs.
What Is the Difference Between Methadone and Suboxone?
Suboxone
- Contains buprenorphine and naloxone
- Partial opioid agonist
- Often prescribed in office-based settings by qualified clinicians
- Has a ceiling effect that lowers (but does not eliminate) the risk of respiratory depression
Methadone
- Full opioid agonist
- Used for opioid use disorder and pain in specific settings
- Typically dispensed through specialized opioid treatment programs for OUD
- Carries a higher risk of respiratory depression than buprenorphine
The most appropriate medication depends on the individual’s medical history, treatment goals, and clinical circumstances.
Final Thoughts
Suboxone (buprenorphine/naloxone) is an evidence-based medication for the treatment of opioid use disorder, helping reduce withdrawal symptoms and cravings while supporting long-term recovery. It works best when combined with counseling, behavioral therapy, and ongoing medical follow-up. Because Suboxone can interact with alcohol, benzodiazepines, and other sedating medications and carries a risk of dependence if misused, it should always be taken exactly as prescribed. Working closely with a qualified healthcare provider can help maximize the benefits of treatment while minimizing potential risks.
