Key Takeaways
- Sublocade and Suboxone both contain buprenorphine, a partial opioid agonist that eases cravings and withdrawal, but they are delivered very differently.
- Suboxone is a daily film or tablet that dissolves under the tongue or in the cheek and also contains naloxone to discourage misuse.
- Sublocade is a once-monthly extended-release injection that only a healthcare provider can give, and it contains buprenorphine only.
- Both are FDA-approved and effective for opioid use disorder, and the right choice depends on your stage of recovery, lifestyle, and treatment goals.
- Gateway Rehab is an expert substance misuse treatment provider in Western Pennsylvania whose team can help you compare options. Reach out to start recovery.
What Sublocade and Suboxone Have in Common
Both medications are forms of buprenorphine, a partial opioid agonist. Buprenorphine attaches to the same brain receptors that opioids like heroin, fentanyl, and oxycodone target, but it activates them only partially. That partial activation is enough to relieve withdrawal and reduce cravings without producing the strong high of a full opioid.
Buprenorphine also has what experts call a ceiling effect: past a certain dose, its opioid effects level off and do not keep climbing. This ceiling on respiratory depression is a major reason buprenorphine is considered safer than full opioids and carries a much lower overdose risk when taken as prescribed.
Both Sublocade and Suboxone are approved by the U.S. Food and Drug Administration to treat opioid use disorder, and both are most effective when combined with counseling and support. Gateway Rehab offers both medications through its medication-assisted recovery program, where medication is paired with therapy.
How Suboxone Works
Suboxone combines two ingredients: buprenorphine and naloxone. It comes as a film or tablet that is placed under the tongue or against the cheek and allowed to dissolve, and it is usually taken once a day. It has been available since 2002 and is also sold as a generic (buprenorphine/naloxone).
The naloxone in Suboxone is included to discourage misuse. If someone tries to misuse the medication by injecting it, the naloxone can trigger withdrawal symptoms. Taken as directed under the tongue, the naloxone has little effect, and the buprenorphine does the work of controlling cravings and blocking the pleasurable effects of other opioids.
Because Suboxone can be taken at home, it offers day-to-day flexibility. Doses can be adjusted over the first days or weeks to control symptoms, and it is often the first medication a provider prescribes when someone begins treatment.
How Sublocade Works
Sublocade is a monthly, extended-release injection of buprenorphine given just under the skin. It was approved by the FDA in 2017 and contains buprenorphine only, with no naloxone. After injection, the medication forms a small deposit that slowly releases buprenorphine over roughly a month, so there is no daily dosing to remember.Â
A few important rules apply to Sublocade. A healthcare provider has to prepare and give the injection; it's not something you can pick up at a pharmacy and do at home, since injecting it incorrectly can be dangerous. Patients used to need at least a week on a daily buprenorphine medication like Suboxone before starting Sublocade, though newer guidelines now allow some patients to start Sublocade right away instead. Most people start with two higher monthly doses, then move to a lower monthly dose for ongoing maintenance, with about a month between each shot.
Sublocade is often a good fit for people who are already stable on buprenorphine and who value the convenience and discretion of not taking a daily medication.
Sublocade vs. Suboxone: Side-by-Side Comparison
| Feature | Suboxone | Sublocade |
|---|---|---|
| Active ingredients | Buprenorphine and naloxone | Buprenorphine only |
| Form | Sublingual or buccal film/tablet | Extended-release injection under the skin |
| How often | Once daily | Once monthly |
| Who administers it | Self-administered at home | Healthcare provider only |
| FDA approval | 2002 | 2017 |
| Misuse deterrent | Naloxone | Provider-only administration |
| Generic available | Yes | No |
| Best suited for | Starting treatment; flexible daily dosing | Patients already stable on buprenorphine |
Cravings, Relapse Prevention, and Effectiveness
Both medications reduce cravings and withdrawal, which is central to preventing relapse. Medications for opioid use disorder are strongly supported by research. According to NIDA, people treated with methadone or buprenorphine face a lower risk of death or overdose than those who go untreated.
Buprenorphine also does a great job keeping people in treatment, and staying in care is one of the biggest factors in long-term recovery. A major research review looked at 31 studies involving over 5,000 patients and found that buprenorphine helps people stay in treatment and cuts down on illicit opioid use, even at fairly low doses. People taking medium or high doses of buprenorphine were far more likely to stick with treatment than those given a placebo.
Sublocade has its own research behind it too. In the main clinical trial used for its approval, patients getting the Sublocade injection went about six weeks without opioid use, on average, compared to less than a week for patients getting a placebo. Roughly 3 in 10 patients on Sublocade stayed opioid-free for most of a five-month stretch, versus almost none in the placebo group.
One more difference worth knowing: Sublocade releases medication steadily over the whole month, so blood levels stay even day to day. Some patients like that steadiness because it's one less thing to think about, freeing up energy for counseling and rebuilding routines. Suboxone works differently, since it's taken daily, which means a provider can adjust the dose quickly if something isn't working.
Side Effects and Lifestyle Considerations
Common side effects of Suboxone include headache, nausea, constipation, sweating, trouble sleeping, and mouth-related effects such as numbness, tongue pain, or redness where the film dissolves. Sublocade shares many buprenorphine side effects but adds the possibility of injection-site reactions such as pain, itching, or a small lump under the skin.
Lifestyle matters too. Suboxone requires taking medicine every day and keeping it safely stored away from children. Sublocade requires a monthly appointment but removes daily pill-taking and offers privacy. For either medication, combining buprenorphine with benzodiazepines, alcohol, or other sedatives is dangerous and should be discussed with your provider.
One more thing worth knowing: it used to be much harder to find a provider who could prescribe buprenorphine, since doctors needed special federal permission to do it. That requirement was dropped at the end of 2022, so today, many more doctors and providers are able to prescribe it, which means more options for finding care close to home.
Questions to Ask Your Provider
- Given my history, would starting on a daily medication or moving to a monthly injection make more sense?
- Am I stable enough on buprenorphine to consider Sublocade?
- How will side effects be monitored and managed?
- How does this medication fit with counseling and my other treatment goals?
- What is the plan if I want to change or eventually stop the medication?
If you are searching for medication-assisted treatment near you in Western Pennsylvania, the team at Gateway Rehab can walk through these questions with you.
Get Answers and Start Your Recovery Today
Sublocade and Suboxone are both effective, science-backed medications for opioid use disorder. The difference is not which one is 'better' overall, but which one fits your recovery stage, your lifestyle, and your goals. A daily film offers flexibility and is often the starting point, while a monthly injection offers convenience and consistency for those already stabilized.
Gateway Rehab, an expert substance misuse treatment provider serving Western Pennsylvania, offers both medications through its medication-assisted recovery program, always paired with counseling and support. To talk through your options with a caring team, reach out to start recovery or explore the full range of services at Gateway Rehab.
Frequently Asked Questions
Is Sublocade just a monthly version of Suboxone?
Not exactly. Both contain buprenorphine, but Suboxone also contains naloxone and is a daily film, while Sublocade is a monthly injection of buprenorphine only. They are related but not interchangeable.
Which is more effective, Sublocade or Suboxone?
Both are effective FDA-approved treatments. Effectiveness depends less on the medication itself and more on staying in treatment and combining it with counseling. Your provider can recommend the better fit for your situation.
Do I need to try Suboxone before Sublocade?
Traditionally, patients had to be stable on a transmucosal buprenorphine product for at least 7 days before the first Sublocade injection. In 2025 the FDA approved a rapid-start option for appropriate patients, so ask your provider what applies to you.
Where can I find Suboxone or Sublocade treatment near me?
Gateway Rehab offers both medications at locations across Western Pennsylvania as part of its medication-assisted recovery program. Contact the team to find the nearest option and begin an assessment.
Are the side effects of these medications serious?
Most side effects, such as headache, nausea, or constipation, are manageable and often ease over time. Serious risks rise when buprenorphine is combined with alcohol or sedatives, so always follow your provider's guidance.
