Suboxone vs Subutex vs Sublocade: One Medication, Three Containers

What is the actual difference?

Suboxone, Subutex, and Sublocade are all buprenorphine. They differ in three ways only: whether naloxone is added, how the drug gets into the body, and how long one dose lasts.

That is the whole comparison.

Everything else is detail about those three things.

A fourth product, Brixadi, is a weekly or monthly buprenorphine injection approved in 2023 and behaves like Sublocade for the purposes of this page. Zubsolv is a buprenorphine and naloxone tablet that behaves like Suboxone.

Why is naloxone in Suboxone at all?

Not to help you. To stop you from injecting it.

Naloxone barely absorbs under the tongue, so when Suboxone is taken as directed the naloxone does close to nothing. Dissolve the film and inject it, or snort it, and the naloxone becomes active, blocks the receptor, and throws an opioid-dependent person into sudden withdrawal. It is a deterrent built into the tablet. That is the entire reason Suboxone exists as a separate product from plain buprenorphine.

Buprenorphine without naloxone: who gets it

Plain buprenorphine, what people still call Subutex, is prescribed when there is a documented reason to skip the naloxone: an allergy or bad reaction to it, and historically pregnancy, where the older guidance preferred the single-ingredient product. ASAM notes that studies of the combination product in pregnancy have found no adverse effects and similar outcomes, and that its use is likely to expand, and ACOG’s 2025 clinical practice update (free abstract on PubMed) says clinicians can prescribe buprenorphine alone or in combination with naloxone. So that reason is weaker than it was. Some prescribers still choose it. Ask why, and expect an answer.

Suboxone film vs tablets

Same drug, same ratio of buprenorphine to naloxone. The film dissolves faster, usually in a few minutes, comes in individually sealed pouches, and is harder for a child to get into. The generic tablets are cheaper and take a little longer to dissolve. Absorption is close but not identical between the two, and some people notice a difference when they switch, so a switch is worth a conversation with the prescriber rather than a silent swap at the pharmacy counter.

How to take Suboxone film

Under the tongue or against the inside of the cheek, and then nothing. No talking, no swallowing, no drinking until it is gone. Buprenorphine absorbs through the lining of the mouth. Swallowed, most of it is destroyed by the liver before it does anything. A film that gets chewed or swallowed early is a wasted dose, and a wasted dose is a withdrawal afternoon.

The “spit trick”

The claim online is that spitting out the saliva after the film dissolves either reduces side effects or that swallowing it adds a little extra effect. Pharmacology says neither is worth much. Buprenorphine that reaches the stomach is mostly inactivated, and the naloxone swallowed is inactive too. What the FDA actually recommends, after its 2022 warning about tooth decay with these products, is the opposite of spitting: once the film is fully dissolved, take a large sip of water, swish it gently around the teeth and gums, and swallow. Then wait at least an hour before brushing. Spit before the film dissolves and you lose the dose. Spit after, and you have changed nothing except your dental exposure, slightly, for the better.

Can you snort Suboxone?

People do, and it is both dangerous and pointless. Through the nose the naloxone becomes active, and in a dependent person that means precipitated withdrawal. The film was also designed for the mouth; it does not become more effective by being ground up. Snorting a film is the one way to make Suboxone work worse.

How long does Suboxone or Subutex stay in your system?

Buprenorphine has a long half-life, roughly 24 to 42 hours after a sublingual dose, and it holds the receptor longer than the blood level suggests. One dose a day is enough for most people. Detection is longer than the felt effect.

• Urine: buprenorphine and its metabolite norbuprenorphine are usually detectable for three to seven days after the last dose, sometimes up to two weeks after long daily use
• Blood: a day or two
• Saliva: a few days
• Hair: up to about 90 days

One detail matters for anyone tested at work or by a court: standard opiate panels do not detect buprenorphine. It needs its own test. A person on Suboxone who screens negative for opiates is not cheating; the panel simply was not looking. And a lab that runs a specific buprenorphine assay will find it. Detection windows here are general ranges, not guarantees.

How long does Sublocade stay in your system?

Months. Sublocade is buprenorphine suspended in a liquid that turns into a solid depot under the skin and releases the drug slowly. Levels build over the first few monthly injections and, after the last one, decline over months rather than days. The label reports the drug can be detectable for roughly a year after the final dose.

That is the feature, not the bug. It is also why Sublocade is not a good match for someone who expects to be off buprenorphine next month.

Does Sublocade have naloxone in it?

No. Sublocade is buprenorphine only. It does not need the deterrent, because it is given by a clinician and never handed to the patient; the FDA requires that through a restricted distribution program. The reason is not abuse by the patient. Injected into a vein rather than under the skin, the depot could cause occlusion, tissue damage, and potentially fatal pulmonary emboli, a risk the label carries as a boxed warning, which is why it is only ever given by a trained provider.

Starting Sublocade

You do not start on Sublocade. You start on daily buprenorphine, confirm you tolerate it, and then transition. The original label required at least seven days on the sublingual form first; a February 2025 label update allows a start after a single dose of the sublingual form and an hour of observation. Either way, the first monthly injection follows a period on the daily form, not a cold induction.

Sublocade withdrawal

Because the depot drains slowly, stopping Sublocade is a built-in taper. Most people who stop after a stable course report mild symptoms that arrive late, weeks to months after the last injection, rather than the sharp withdrawal that follows a missed sublingual dose. Mild is not none. Sleep, mood, and cravings can surface at month two or three, when the person has stopped connecting them to the medication. Tell the prescriber before the last injection, not after, so the plan accounts for it.

Sublocade cost and copay assistance

At list price Sublocade costs well over a thousand dollars a month. Almost no one pays that. NJ FamilyCare covers it, and state-regulated commercial plans in New Jersey cannot require prior authorization for medication for opioid use disorder. For commercially insured patients with a copay, the manufacturer runs a copay assistance program; the prescriber’s office enrolls you. Government insurance, Medicaid and Medicare included, is excluded from manufacturer copay programs by federal rule, which is fine, because those programs cover the drug directly.

Where methadone fits

Methadone is the other half of the “Suboxone vs methadone” question and it is not on the table above because it is a different drug. Methadone is a full opioid agonist. Buprenorphine is a partial one with a ceiling, which is why buprenorphine alone rarely causes overdose and methadone can. Methadone can only be dispensed by a licensed opioid treatment program, daily at first. Buprenorphine can be prescribed from any medical office. For long, heavy fentanyl use, methadone often holds better. For most other situations, the accessibility of buprenorphine wins. Our medication guide compares all three medications, naltrexone included.

Kratom and Suboxone

Kratom’s active compounds act on the same opioid receptors, weakly. Two things follow. A person dependent on kratom can be started on buprenorphine the same way a person dependent on pills can, and increasingly is. And a person already on buprenorphine who takes kratom gets very little from it, because the receptors are occupied. The dangerous order is the reverse: heavy kratom use, then a first dose of buprenorphine before withdrawal has started, which can precipitate withdrawal exactly as it does after fentanyl. Tell the prescriber about the kratom. It counts.

The one rule for all three

Buprenorphine must be started in withdrawal, and it must not be combined with sedatives without a prescriber knowing.

Started too early, while a full opioid is still on the receptor, buprenorphine knocks that opioid off and replaces it with a weaker signal. The result is sudden, severe withdrawal, and with fentanyl in the picture it is common enough that many New Jersey programs now use low-dose induction to avoid it. Our opioid detox guide explains the timing. Combined with alcohol or a benzodiazepine such as Klonopin, buprenorphine loses its safety ceiling, because the other drug is doing the breathing suppression. Nearly all buprenorphine-involved deaths involve at least one other drug, most often another opioid, and frequently a benzodiazepine or alcohol.

In New Jersey

Since the 2023 removal of the federal X-waiver, any New Jersey prescriber whose DEA registration covers Schedule III can start buprenorphine, in any form, subject to the federal training attestation and their scope of practice. New Jersey law P.L.2017, c.28 bars state-regulated plans from requiring prior authorization for medication for opioid use disorder, and it covers the first 180 days per plan year of in-network inpatient and outpatient treatment without prior authorization. Self-funded employer plans are exempt; verify with the plan. NJ FamilyCare covers the film, the tablets, and the monthly injection. Our insurance guides go plan by plan.

Periscope Behavioral Health, which publishes this site, is opening a medical detox in Hammonton, Atlantic County, expected Summer 2027. Until then, the admissions line of our publisher, Periscope Behavioral Health, at (888) 313-3583, can talk through options in New Jersey and Florida, including facilities Periscope operates. What a plan covers depends on the plan and the facility’s network status. For placement independent of us, the state’s IME Addictions Access Center at 1-844-276-2777 places NJ FamilyCare and uninsured residents directly. Many emergency departments in the state can start buprenorphine the same day.

The bottom line

Suboxone, Subutex, and Sublocade are one medication in three containers.

The choice is about the container.

Naloxone or not is about injection. Film or tablet is about preference and price. Daily or monthly is about how much you trust tomorrow’s version of yourself with a bottle. None of them is the weak option, and none of them is a way around withdrawal at the start. The medication is not the hard part. Starting it in time is.