Opioid dependence - Drugonomy™

Buprenorphine/naloxone (Oromucosal, Sublingual)

Sama Mohamed — Tue, 10 Feb 2026 22:44:14 +0000

Uses for buprenorphine/naloxone

Buprenorphine and naloxone sublingual tablet is used to treat opioid (narcotic) dependence or addiction. Buprenorphine and naloxone buccal film, sublingual film, or sublingual tablet is used for induction and maintenance treatment of opioid (narcotic) dependence. It should be used in patients who have already been treated with buprenorphine sublingual tablets.

When a narcotic medicine is used for a long time, it may become habit-forming, causing mental or physical dependence. Physical dependence may lead to withdrawal side effects if the narcotic is stopped suddenly. Severe withdrawal side effects can usually be prevented when a person is switched to buprenorphine and naloxone combination. It acts on the central nervous system (CNS) to help prevent the withdrawal side effects.

This medicine is available only with your doctor’s prescription.

Before using buprenorphine/naloxone

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies have not been performed on the relationship of age to the effects of buprenorphine and naloxone buccal film, sublingual film, or sublingual tablet in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of buprenorphine and naloxone combination in the elderly. However, elderly patients are more likely to have age-related kidney, liver, heart, or lung problems, which may require caution and an adjustment in the dose for patients receiving buprenorphine and naloxone combination.

Breast Feeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Interactions with Medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

Bepridil
Cisapride
Dronedarone
Fluconazole
Ketoconazole
Levoketoconazole
Mesoridazine
Nalmefene
Naltrexone
Pimozide
Piperaquine
Posaconazole
Safinamide
Samidorphan
Saquinavir
Sparfloxacin
Terfenadine

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

Acecainide
Acepromazine
Aclidinium
Adagrasib
Alfentanil
Alfuzosin
Almotriptan
Alprazolam
Amantadine
Amiloride
Amineptine
Amiodarone
Amisulpride
Amitriptyline
Amitriptylinoxide
Amobarbital
Amoxapine
Amphetamine
Amprenavir
Anagrelide
Anileridine
Apalutamide
Apomorphine
Aprepitant
Aripiprazole
Aripiprazole Lauroxil
Armodafinil
Arsenic Trioxide
Asenapine
Astemizole
Atazanavir
Atropine
Azithromycin
Baclofen
Bedaquiline
Belladonna
Bemetizide
Bendroflumethiazide
Benperidol
Bentazepam
Benzhydrocodone
Benzphetamine
Benzthiazide
Benztropine
Biperiden
Boceprevir
Bosentan
Bromazepam
Bromopride
Brompheniramine
Bumetanide
Bupropion
Buserelin
Buspirone
Butabarbital
Butorphanol
Calcium Oxybate
Cannabidiol
Cannabis
Canrenoate
Canrenone
Carbamazepine
Carbinoxamine
Cariprazine
Carisoprodol
Carphenazine
Cenobamate
Ceritinib
Cetirizine
Chloral Hydrate
Chlordiazepoxide
Chloroquine
Chlorothiazide
Chlorpheniramine
Chlorpromazine
Chlorthalidone
Chlorzoxazone
Cimetidine
Ciprofloxacin
Citalopram
Clarithromycin
Clemastine
Clidinium
Clobazam
Clofazimine
Clomipramine
Clonazepam
Clopamide
Clopidogrel
Clorazepate
Clothiapine
Cloxazolam
Clozapine
Cobicistat
Cocaine
Codeine
Conivaptan
Crizotinib
Cyclobenzaprine
Cyclopenthiazide
Cyclopentolate
Cyclosporine
Cyclothiazide
Cyproheptadine
Dabrafenib
Dantrolene
Daridorexant
Darifenacin
Darunavir
Dasatinib
Degarelix
Delamanid
Delavirdine
Delorazepam
Desipramine
Deslorelin
Desmopressin
Desvenlafaxine
Deutetrabenazine
Dexamethasone
Dexmedetomidine
Dextroamphetamine
Dextromethorphan
Dezocine
Diacetylmorphine
Diazepam
Diazoxide
Dibenzepin
Dichloralphenazone
Dicyclomine
Difenoxin
Diltiazem
Dimenhydrinate
Diphenhydramine
Diphenoxylate
Dipyrone
Disopyramide
Dofetilide
Dolasetron
Domperidone
Donepezil
Doxepin
Doxylamine
Droperidol
Duloxetine
Duvelisib
Ebastine
Efavirenz
Elagolix
Eletriptan
Encorafenib
Enflurane
Entrectinib
Enzalutamide
Eplerenone
Eribulin
Erythromycin
Escitalopram
Esketamine
Eslicarbazepine Acetate
Estazolam
Eszopiclone
Ethacrynic Acid
Ethchlorvynol
Ethopropazine
Ethylmorphine
Etozolin
Etrasimod
Etravirine
Famotidine
Felbamate
Fenfluramine
Fentanyl
Fesoterodine
Fexinidazole
Fingolimod
Flavoxate
Flecainide
Flibanserin
Flunitrazepam
Fluoxetine
Fluphenazine
Flurazepam
Fluspirilene
Fluvoxamine
Formoterol
Fosamprenavir
Fosaprepitant
Foscarnet
Fosnetupitant
Fosphenytoin
Fospropofol
Fostemsavir
Frovatriptan
Furosemide
Gabapentin
Gabapentin Enacarbil
Galantamine
Gatifloxacin
Gemifloxacin
Gepirone
Glasdegib
Glycopyrrolate
Glycopyrronium Tosylate
Gonadorelin
Goserelin
Granisetron
Halazepam
Halofantrine
Haloperidol
Halothane
Hexobarbital
Histrelin
Homatropine
Hydrochlorothiazide
Hydrocodone
Hydroflumethiazide
Hydromorphone
Hydroquinidine
Hydroxyamphetamine
Hydroxychloroquine
Hydroxytryptophan
Hydroxyzine
Hyoscyamine
Ibutilide
Idelalisib
Iloperidone
Imatinib
Imipramine
Indapamide
Indinavir
Inotuzumab Ozogamicin
Ipratropium
Isocarboxazid
Isoflurane
Itraconazole
Ivabradine
Ivacaftor
Ivosidenib
Josamycin
Ketamine
Ketazolam
Ketobemidone
Lacosamide
Lapatinib
Larotrectinib
Lasmiditan
Lefamulin
Lemborexant
Lenacapavir
Lenvatinib
Lesinurad
Letermovir
Leuprolide
Levocetirizine
Levofloxacin
Levomilnacipran
Levorphanol
Linezolid
Lisdexamfetamine
Lithium
Lofepramine
Lofexidine
Lomitapide
Lonafarnib
Lopinavir
Loprazolam
Lorazepam
Lorcaserin
Lorlatinib
Lormetazepam
Loxapine
Lumacaftor
Lumefantrine
Lurasidone
Macimorelin
Magnesium Oxybate
Meclizine
Medazepam
Mefloquine
Melitracen
Melperone
Mepenzolate
Meperidine
Mephobarbital
Meprobamate
Meptazinol
Metaclazepam
Metaxalone
Methadone
Methamphetamine
Methdilazine
Methocarbamol
Methohexital
Methotrimeprazine
Methyclothiazide
Methylene Blue
Metoclopramide
Metolazone
Metronidazole
Mibefradil
Midazolam
Mifepristone
Milnacipran
Mirtazapine
Mitotane
Mizolastine
Mobocertinib
Modafinil
Molindone
Moricizine
Morphine
Morphine Sulfate Liposome
Moxifloxacin
Nafarelin
Nafcillin
Nalbuphine
Naldemedine
Naloxegol
Naratriptan
Nefazodone
Nelfinavir
Netupitant
Nevirapine
Nicomorphine
Nilotinib
Nitrazepam
Nitrous Oxide
Nordazepam
Norfloxacin
Nortriptyline
Octreotide
Ofloxacin
Olanzapine
Ondansetron
Opipramol
Opium
Opium Alkaloids
Orphenadrine
Osilodrostat
Osimertinib
Oxaliplatin
Oxazepam
Oxcarbazepine
Oxitropium Bromide
Oxybutynin
Oxycodone
Oxymorphone
Ozanimod
Pacritinib
Palbociclib
Paliperidone
Palonosetron
Panobinostat
Papaveretum
Papaverine
Paregoric
Paroxetine
Pasireotide
Pazopanib
Pentamidine
Pentazocine
Pentobarbital
Perampanel
Perazine
Periciazine
Perphenazine
Phenelzine
Phenobarbital
Phenytoin
Pimavanserin
Pinazepam
Pipamperone
Pipenzolate Bromide
Piperacetazine
Pipotiazine
Pirenzepine
Piretanide
Piritramide
Pitolisant
Polythiazide
Ponesimod
Potassium Oxybate
Prazepam
Prednisone
Pregabalin
Primidone
Probucol
Procainamide
Procarbazine
Prochlorperazine
Procyclidine
Promazine
Promethazine
Propafenone
Propantheline
Propiverine
Propofol
Protriptyline
Quazepam
Quetiapine
Quinethazone
Quinidine
Quinine
Quizartinib
Ramelteon
Ranitidine
Ranolazine
Rasagiline
Relugolix
Remifentanil
Remimazolam
Remoxipride
Ribociclib
Rifabutin
Rifampin
Rifapentine
Risperidone
Ritonavir
Rizatriptan
Ropeginterferon Alfa-2b-njft
Schisandra sphenanthera
Scopolamine
Secobarbital
Selegiline
Selpercatinib
Sertindole
Sertraline
Sevoflurane
Sibutramine
Siponimod
Sodium Oxybate
Sodium Phosphate
Sodium Phosphate, Dibasic
Sodium Phosphate, Monobasic
Solifenacin
Sorafenib
Sotalol
Spironolactone
St John’s Wort
Stramonium
Sufentanil
Sulpiride
Sultopride
Sumatriptan
Sunitinib
Suvorexant
Tacrolimus
Tamoxifen
Tapentadol
Telaprevir
Telavancin
Telithromycin
Telotristat Ethyl
Temazepam
Terodiline
Tetrabenazine
Tetrazepam
Thiethylperazine
Thiopental
Thiopropazate
Thioridazine
Thiothixene
Tianeptine
Tilidine
Tiotropium
Tizanidine
Tolonium Chloride
Tolterodine
Topiramate
Toremifene
Torsemide
Tramadol
Tranylcypromine
Trazodone
Treosulfan
Triamterene
Triazolam
Trichlormethiazide
Triclabendazole
Trifluoperazine
Trifluperidol
Triflupromazine
Trihexyphenidyl
Trimeprazine
Trimipramine
Triptorelin
Troleandomycin
Tropicamide
Trospium
Tryptophan
Tucatinib
Umeclidinium
Vandetanib
Vardenafil
Vemurafenib
Venlafaxine
Verapamil
Vilanterol
Vilazodone
Vinflunine
Voclosporin
Voriconazole
Vorinostat
Vortioxetine
Voxelotor
Xipamide
Zaleplon
Ziprasidone
Zolmitriptan
Zolpidem
Zopiclone
Zotepine
Zuclopenthixol
Zuranolone

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Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

Clonidine
Yohimbine

Interactions with Food/Tobacco/Alcohol

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following is usually not recommended, but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco.

Ethanol

Proper use of buprenorphine/naloxone

Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered.

This medicine should come with a Medication Guide. Read and follow these instructions carefully. Ask your doctor if you have any questions.

If you are using the buccal film:

Use your tongue to wet the side of your cheek or rinse your mouth with water in the area where you will place the film.
Do not cut or tear the film. Hold the film on a clean, dry finger. If you are using Bunavail®, hold with the text (BN2, BN4, or BN6) facing up.
Place the side of the film against the inside of your cheek. If you are using Bunavail®, place with the text (BN2, BN4, or BN6) against the inside of your cheek.
Press the film and hold it there for 5 seconds.
Leave the film in place until it dissolves. Do not touch, move, chew, or swallow it.
If you must use more than one film, place the second film on the other side of your mouth. Do not place more than 2 buccal films to the inside of one cheek at a time.
Do not eat or drink anything until the film is completely dissolved.
After the film has completely dissolved, take a sip of water, swish gently around your teeth and gums, and swallow. Wait at least one hour before brushing your teeth.

If you are using the sublingual tablet:

Do not cut, crush, chew, or swallow it.
Place the tablet under the tongue until it is dissolved.
If you take 2 or more tablets at a time, place all of the tablets in different places under the tongue at the same time.
If this is uncomfortable, place 2 tablets at a time under the tongue and repeat the process until all the tablets have been taken.
Do not eat or drink anything until the tablets are completely dissolved.
Rinse your mouth with water and swallow. Wait at least one hour before brushing your teeth.

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If you are using the sublingual film:

Drink water before taking this medicine to help moisten your mouth.
Place the film under the tongue until it is dissolved.
If you need to take an additional film, place the new film on the opposite side from the first film.
Do not eat or drink anything until the film is completely dissolved.
Do not cut, chew, swallow, or move the film after placing it under the tongue.
After the film has completely dissolved, take a sip of water, swish gently around your teeth and gums, and swallow. Wait at least one hour before brushing your teeth.

Check with your doctor first before changing dosage forms (eg, films, tablets) or dosage strengths. These forms are very different from each other.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor’s orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

For buccal dosage form (film):
- For induction treatment of opioid dependence:
  - Adults—On Day 1, your doctor may give you an induction dosage up to 4.2 milligrams (mg) of buprenorphine and 0.7 mg of naloxone in divided doses. On Day 2, your doctor may give you up to 8.4 mg of buprenorphine and 1.4 mg of naloxone taken as a single dose. If you have been taking methadone, heroin, short-acting, or long-acting opioid medicines, your doctor may recommend you to take buprenorphine alone.
  - Children—Use and dose must be determined by your doctor.
- For maintenance treatment of opioid dependence:
  - Adults—8.4 milligrams (mg) of buprenorphine and 1.4 mg of naloxone taken as a single dose once a day. Your doctor may adjust your dose as needed.
  - Children—Use and dose must be determined by your doctor.
For buccal or sublingual dosage form (film):
- For induction treatment of opioid dependence:
  - Adults—On Day 1, your doctor may give you an induction dosage up to 8 milligrams (mg) of buprenorphine and 2 mg of naloxone in divided doses. On Day 2, your doctor may give you up to 16 mg of buprenorphine and 4 mg of naloxone taken as a single dose. If you have been taking methadone, heroin, short-acting, or long-acting opioid medicines, your doctor may recommend you to take buprenorphine alone.
  - Children—Use and dose must be determined by your doctor.
- For maintenance treatment of opioid dependence:
  - Adults—16 milligrams (mg) of buprenorphine and 4 mg of naloxone taken as a single dose once a day. Your doctor may adjust your dose as needed.
  - Children—Use and dose must be determined by your doctor.
For sublingual dosage form (tablets):
- For induction treatment of opioid dependence:
  - Adults—On Day 1, your doctor may give you an induction dosage up to 5.7 milligrams (mg) of buprenorphine and 1.4 mg of naloxone in divided doses. On Day 2, your doctor may give you up to 11.4 mg of buprenorphine and 2.9 mg of naloxone taken as a single dose. If you have been taking methadone, heroin, short-acting or long-acting opioid medicines, your doctor may recommend you take buprenorphine alone.
  - Children—Use and dose must be determined by your doctor.
- For maintenance treatment of opioid dependence:
  - Suboxone®:
    - Adults—16 milligrams (mg) of buprenorphine and 4 mg of naloxone taken as a single dose once a day. Your doctor may adjust your dose as needed.
    - Children—Use and dose must be determined by your doctor.
  - Zubsolv®:
    - Adults—11.4 milligrams (mg) of buprenorphine and 2.9 mg of naloxone taken as a single dose once a day. Your doctor may adjust your dose as needed.
    - Children—Use and dose must be determined by your doctor.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Drop off any unused narcotic medicine at a drug take-back location right away. If you do not have a drug take-back location near you, flush any unused narcotic medicine down the toilet. Check your local drug store and clinics for take-back locations. You can also check the DEA web site for locations. Here is the link to the FDA safe disposal of medicines website: www.fda.gov/drugs/resourcesforyou/consumers/buyingusingmedicinesafely/ensuringsafeuseofmedicine/safedisposalofmedicines/ucm186187.htm

Precautions while using buprenorphine/naloxone

It is very important that your doctor check your progress while you are using this medicine. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. Blood tests may be needed to check for unwanted effects.

Do not use this medicine if you have used an MAO inhibitor (MAOI) (eg, isocarboxazid [Marplan®], linezolid [Zyvox®], phenelzine [Nardil®], selegiline [Eldepryl®], tranylcypromine [Parnate®]) within the past 14 days.

It is against the law and dangerous for anyone else to use your medicine. Keep your unused films or tablets in a safe and secure place. People who are addicted to drugs might want to steal this medicine.

This medicine may be habit-forming. If you feel that the medicine is not working as well, do not use more than your prescribed dose. Call your doctor for instructions.

Using too much of this medicine may cause an overdose, which can be life-threatening. Symptoms of an overdose include: blurred vision, confusion, difficult or trouble breathing, dizziness, faintness, or lightheadedness when getting up suddenly from a lying position or sitting position, irregular, fast or slow, or shallow breathing, pale or blue lips, fingernails, or skin, pinpoint pupils, sleepiness, sweating, unusual tiredness or weakness. In case of an overdose, call your doctor right away. Your doctor may also give naloxone to treat an overdose.

This medicine may cause sleep-related breathing problems (eg, sleep apnea, sleep-related hypoxemia). Your doctor may decrease your dose if you have sleep apnea (stop breathing for short periods during sleep) while using this medicine.

This medicine may cause serious tooth problems. Tell your doctor right away if you have cavities, tooth decay, tooth pain, tooth infection, tooth erosion, tooth fracture, or tooth loss. Schedule regular dental checkups while taking this medicine.

Before having any kind of surgery (including dental surgery) or emergency treatment, tell the medical doctor or dentist in charge that you are using this medicine. Serious unwanted effects can occur if certain medicines are given together with buprenorphine and naloxone combination.

This medicine will add to the effects of alcohol and other CNS depressants. CNS depressants are medicines that slow down the nervous system, which may cause drowsiness or make you less alert. Some examples of CNS depressants are antihistamines or medicine for allergies or colds, sedatives, tranquilizers, or sleeping medicine, other prescription pain medicine or narcotics, medicine for seizures or barbiturates, muscle relaxants, or anesthetics, including some dental anesthetics. This effect may last for a few days after you stop using this medicine. Check with your doctor before taking any of the medicines listed above while you are using this medicine.

Dizziness, lightheadedness, or fainting may occur when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem. Also, lying down for a while may relieve the dizziness or lightheadedness.

This medicine may make you dizzy, drowsy, or lightheaded. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.

Using this medicine while you are pregnant may cause neonatal opioid withdrawal syndrome in your newborn baby. Tell your doctor right away if your baby has an abnormal sleep pattern, diarrhea, a high-pitched cry, irritability, shakiness or tremors, weight loss, vomiting, or fails to gain weight.

This medicine may cause adrenal insufficiency. Check with your doctor right away if you have darkening of the skin, diarrhea, dizziness, fainting, loss of appetite, mental depression, nausea, skin rash, unusual tiredness or weakness, or vomiting.

Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, vomiting, or yellow eyes or skin. These could be symptoms of a serious liver problem.

This medicine may cause serious allergic reactions, including anaphylaxis, which can be life-threatening and require immediate medical attention. Call your doctor right away if you have a rash, hives, itching, hoarseness, trouble with breathing or swallowing, or any swelling of your hands, face, or mouth while you are using this medicine.

Contact your doctor right away if you have any changes to your heart rhythm. You might feel dizzy or faint, or you might have a fast, pounding, or uneven heartbeat. Make sure your doctor knows if you or anyone in your family has ever had a heart rhythm problem such as QT prolongation.

Do not suddenly stop using it without first checking with your doctor. Your doctor may want you to gradually reduce the amount you are using before stopping it completely. This may help reduce the possibility of withdrawal symptoms, including anxiety, fever, nausea, runny nose, stomach cramps, sweating, tremors, or trouble with sleeping.

Check with your doctor right away if you have anxiety, restlessness, a fast heartbeat, fever, sweating, muscle spasms, twitching, nausea, vomiting, diarrhea, or see or hear things that are not there. These may be symptoms of a serious condition called serotonin syndrome. Your risk may be higher if you also take certain other medicines that affect serotonin levels in your body.

Using too much of this medicine may cause infertility (unable to have children). Talk with your doctor before using this medicine if you plan to have children.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects of buprenorphine/naloxone

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Chills
cough
feeling faint, dizzy, or lightheaded
feeling of warmth or heat
fever
flushing or redness of the skin, especially on the face and neck
headache
hoarseness
lower back or side pain
painful or difficult urination
sweating

Incidence not known

Agitation
bloating or swelling of the face, arms, hands, lower legs, or feet
chest tightness
darkening of the skin
diarrhea
difficulty swallowing
dizziness
fainting
fast heartbeat
hives, itching, skin rash
loss of appetite
mental depression
nausea
overactive reflexes
poor coordination
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
rapid weight gain
restlessness shivering talking or acting with excitement you cannot control
tingling of the hands or feet
toothache
trembling or shaking twitching
unusual weight gain or loss
vomiting

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

Blurred vision
confusion
difficult or trouble breathing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
drowsiness
irregular, fast, slow, or shallow breathing
pale or blue lips, fingernails, or skin
pinpoint pupils
relaxed and calm feeling
sleepiness
unusual tiredness or weakness

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Difficulty having a bowel movement
lack or loss of strength
stomach pain
trouble sleeping

Less common

Back pain
diarrhea
runny or stuffy nose
sneezing

Incidence not known

Burning or sore mouth
burning, crawling, itching, numbness, prickling, “pins and needles”, or tingling feelings inside the mouth
decline or loss of libido or sexual desire
irritability
mood swings
poor concentration
redness, swelling, or soreness of the tongue
reduced muscle strength
swelling, inflammation, or redness of the mouth

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Commonly used brand name(s)

In the U.S.

Cassipa
Suboxone
Zubsolv

Available Dosage Forms:

Tablet
Film

Bunavail

Sama Mohamed — Mon, 09 Feb 2026 21:49:02 +0000

What is Bunavail?

Bunavail buccal films contains a combination of buprenorphine and naloxone. Buprenorphine is an opioid medication, sometimes called a narcotic. Naloxone blocks the effects of opioid medication, including pain relief or feelings of well-being that can lead to opioid abuse.

Bunavail buccal films are used to treat opioid addiction.

Bunavail is not for use as a pain medication.

Warnings

MISUSE OF OPIOID MEDICINE CAN CAUSE ADDICTION, OVERDOSE, OR DEATH. Keep the medication in a place where others cannot get to it.

Using Bunavail during pregnancy may cause life-threatening withdrawal symptoms in the newborn.

Fatal side effects can occur if you use Bunavail with alcohol, or with other drugs that cause drowsiness or slow your breathing.

Before taking this medicine

You should not use Bunavail if you are allergic to buprenorphine or naloxone (Narcan).

To make sure Bunavail is safe for you, tell your doctor if you have ever had:

tooth problems, including a history of cavities;
breathing problems, sleep apnea;
enlarged prostate, urination problems;
liver or kidney disease;
abnormal curvature of the spine that affects breathing;
problems with your gallbladder, adrenal gland, or thyroid;
a head injury, brain tumor, or seizures; or
alcoholism or drug addiction.

If you use Bunavail while you are pregnant, your baby could become dependent on this medicine. This can cause life-threatening withdrawal symptoms in the baby after it is born. Babies born dependent on opioids may need medical treatment for several weeks.

Ask a doctor before using Bunavail if you are breastfeeding. Tell your doctor if you notice severe drowsiness or slow breathing in the nursing baby.

How should I take Bunavail?

Use Bunavail buccal films exactly as prescribed by your doctor. Follow the directions on your prescription label and read all medication guides. Never use Bunavail in larger amounts, or for longer than prescribed. Tell your doctor if you feel an increased urge to use more of this medicine.

Never share Bunavail with another person, especially someone with a history of drug abuse or addiction. MISUSE CAN CAUSE ADDICTION, OVERDOSE, OR DEATH. Keep the medicine in a place where others cannot get to it. Selling or giving away Bunavail is against the law.

Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.

Rinse your mouth with water after the Bunavail film dissolves. Wait one hour after the medicine dissolves to brush your teeth to prevent damage to the teeth and gums. You should receive regular dental checkups while using Bunavail.

If you switch between medicines containing buprenorphine, you may not use the same dose for each one. Follow all directions carefully.

Do not stop using Bunavail suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

You will need frequent blood tests to check your liver function.

All your medical care providers should know that you are being treated for opioid addiction, and that you take Bunavail. Make sure your family members know how to provide this information in case they need to speak for you during an emergency.

Never crush or break a Bunavail pill to inhale the powder or mix it into a liquid to inject the drug into your vein. This practice has resulted in death.

Store Bunavail films in the foil pouch at room temperature, away from moisture and heat. Discard an empty pouch in a place children and pets cannot get to. Keep track of your medicine. You should be aware if anyone is using it improperly or without a prescription.

Do not keep leftover opioid medication. Just one dose can cause death in someone using Bunavail accidentally or improperly. Ask your pharmacist where to locate a drug take-back disposal program. If there is no take-back program, remove any unused films from the foil pack and flush the films down the toilet. Throw the empty foil pack into the trash.

Dosing information

Usual Adult Dose for Opiate Dependence: Buprenorphine monotherapy is generally used for induction. Bunavail may be used for induction in patients dependent on heroin or short-acting opioid products. Note – one Bunavail 4.2 mg/0.7 mg buccal film provides the equivalent buprenorphine exposure to one Suboxone 8 mg/2 mg sublingual tablet.

INDUCTION dose: Day 1: Initial dose: 2.1 mg/0.3 mg buccally; followed in intervals of approximately 2 hours with additional doses to a total dose of 4.2 mg/0.7 mg to control acute withdrawal symptoms
Day 2: a single dose up to 8.4 mg/1.4 mg buccally.

MAINTENANCE Treatment: Doses should be adjusted to a level that holds the patient in treatment and suppresses opioid withdrawal signs and symptoms; doses should be titrated to clinical effectiveness as rapidly as possible as gradual titration may lead to higher drop-out rates.
-Progressively adjust in increments/decrements of 2.1 mg/0.3 mg to a level that holds the patient in treatment and suppresses opioid withdrawal signs and symptoms.
-Recommended target dose: 8.4 mg/1.4 mg buccally once a day; range 2.1 mg/0.3 mg to 12.6 mg/2.1 mg
Maximum dose: 12.6 mg/ 2.1 mg buccally once a day.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line . An opioid overdose can be fatal, especially in a child or other person using the medicine without a prescription. Overdose symptoms may include severe drowsiness, pinpoint pupils, slow breathing, or no breathing.

What should I avoid while taking Bunavail?

Do not drink alcohol. Dangerous side effects or death could occur.

Avoid driving or operating machinery until you know how Bunavail will affect you. Dizziness or severe drowsiness can cause falls, accidents, or severe injuries.

Buprenorphine and naloxone side effects

Get emergency medical help if you have signs of an allergic reaction to Bunavail: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Opioid medicine can slow or stop your breathing, and death may occur. A person caring for you should seek emergency medical attention if you have slow breathing with long pauses, blue colored lips, or if you are hard to wake up.

Call your doctor at once or seek emergency medical attention if you have:

any problems with your teeth or gums;
weak or shallow breathing, breathing that stops during sleep;
a light-headed feeling, like you might pass out;
confusion, loss of coordination, extreme weakness;
blurred vision, slurred speech;
liver problems – upper stomach pain, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
high levels of serotonin in the body – agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, diarrhea;
low cortisol levels – nausea, vomiting, loss of appetite, dizziness, worsening tiredness or weakness; or
opioid withdrawal symptoms – shivering, goose bumps, increased sweating, feeling hot or cold, runny nose, watery eyes, diarrhea, muscle pain.

Serious breathing problems may be more likely in older adults and those who are debilitated or have wasting syndrome or chronic breathing disorders.

Common Bunavail side effects may include:

dizziness, drowsiness, blurred vision, feeling drunk, trouble concentrating;
withdrawal symptoms;
tongue pain, redness or numbness inside your mouth;
nausea, vomiting, constipation;
headache, back pain;
fast or pounding heartbeats, increased sweating; or
sleep problems (insomnia).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

What other drugs will affect Bunavail?

You may have breathing problems or withdrawal symptoms if you start or stop taking certain other medicines. Tell your doctor if you also use an antibiotic, antifungal medication, heart or blood pressure medication, seizure medication, or medicine to treat HIV or hepatitis C.

Opioid medication can interact with many other drugs and cause dangerous side effects or death. Be sure your doctor knows if you also use:

cold or allergy medicines, bronchodilator asthma/COPD medication, or a diuretic (“water pill”);
medicines for motion sickness, irritable bowel syndrome, or overactive bladder;
other opioids – opioid pain medicine or prescription cough medicine;
a sedative like Valium – diazepam, alprazolam, lorazepam, Xanax, Klonopin, Ativan, and others;
drugs that make you sleepy or slow your breathing – a sleeping pill, muscle relaxer, medicine to treat mood disorders or mental illness; or
drugs that affect serotonin levels in your body – a stimulant, or medicine for depression, Parkinson’s disease, migraine headaches, serious infections, or nausea and vomiting.