Suboxone and Vivitrol are both used to treat opioid use disorder, but they approach it from opposite directions. One gently activates opioid receptors to quiet cravings and withdrawal. The other blocks those receptors entirely. Neither is better across the board. The right choice comes down to where you are in recovery and what fits your life.
Here is how they compare, and how to think about which one suits you.
The Core Difference: Agonist vs. Antagonist
Suboxone contains buprenorphine, a partial opioid agonist. It settles onto opioid receptors and activates them just enough to switch off cravings and withdrawal, without the full high of other opioids. Because it is an opioid medication, it creates physical dependence, and it is tapered off gradually to manage withdrawal when the time comes.
Vivitrol is extended-release naltrexone, an opioid antagonist. It blocks the receptors instead of activating them, so opioids produce no effect and there is no reward in using. It is not an opioid, causes no dependence, and there is nothing to taper.
Suboxone and Vivitrol Side by Side
| Suboxone | Vivitrol | |
|---|---|---|
| How it works | Partial agonist; eases cravings and withdrawal | Antagonist; blocks opioids entirely |
| What it treats | Opioid use disorder | Opioid and alcohol use disorder |
| How it’s taken | Daily film or tablet | Monthly injection |
| Starting requirement | Begun in early withdrawal; no long opioid-free period | Must be opioid-free about 7 to 10 days first |
| Physical dependence | Yes; tapered when stopping | No |
When Suboxone Tends to Fit
Suboxone is often the more practical starting point, because it can be begun in early withdrawal without a long opioid-free stretch first. That makes it a strong fit for people coming directly off opioids who need relief quickly, and for anyone who would struggle to get through the days of abstinence that Vivitrol requires up front. The trade-off is a daily medication and, eventually, a taper.
When Vivitrol Tends to Fit
Vivitrol appeals to people who want nothing that acts like an opioid, who value a once-a-month shot over daily dosing, or who are also working on alcohol use, since it treats both. The catch is the starting line: you have to be fully off opioids first, which usually means completing detox before the first injection. It is also worth knowing that tolerance drops on Vivitrol, so a return to opioid use after it wears off carries a real overdose risk.
What the Research Actually Shows
The largest head-to-head comparison is the X:BOT trial, a study of 570 people published in The Lancet. Its most useful finding is about the starting line, not the finish line. Nearly everyone assigned to Suboxone was able to start it, 94 percent, while only 72 percent of those assigned to Vivitrol got their first shot, because so many could not complete the opioid-free period it requires. Counting everyone who enrolled, 57 percent of the Suboxone group relapsed during the study versus 65 percent of the Vivitrol group. Among people who actually started their medication, the two performed about equally well.
The practical translation: if you are coming straight off opioids as an outpatient, Suboxone’s easier start is a real advantage. If you have already completed detox, both are strong options and the choice comes down to fit.
Can You Switch Between Them?
Yes, in both directions, with planning. Moving from Suboxone to Vivitrol means tapering off buprenorphine and then staying opioid-free long enough that the first injection does not trigger withdrawal; your provider manages that gap, often with comfort medications. Moving from Vivitrol to Suboxone is mostly about timing: the blockade from the last shot has to fade, usually toward the end of the four-week window, before buprenorphine can attach and do its work. Neither switch is something to attempt on your own, but neither is a reason to feel locked in. Plenty of people change medications when the first choice is not the right fit.
Why There Is No Universal Best
The differences that matter are personal: how you are starting, whether daily or monthly suits you better, whether alcohol is part of the picture, and your own history and preferences. This is a decision to make with a provider, not from a chart, and it can be revisited if the first choice is not the right one.
We Offer Both at Rockland Recovery
Because there is no one-size answer, our medication-assisted treatment program in South Shore Massachusetts offers both Suboxone and Vivitrol, matched to you and paired with counseling. If you want to go deeper on either one, see our guides on whether Suboxone is addictive and what Vivitrol is. When you are ready, verify your insurance or call us at 855-732-4842.
Frequently Asked Questions
Is Vivitrol or Suboxone better?
Neither is better overall. Both are effective, and the right choice depends on how you are starting treatment, whether you prefer daily or monthly dosing, and your history. A provider can help you decide.
Can you switch from Suboxone to Vivitrol?
Yes, but it takes planning. You have to be off buprenorphine long enough to avoid triggering withdrawal when Vivitrol is started, which a provider will guide.
Which one works better?
In the largest trial comparing them, people who successfully started either medication did about equally well. Suboxone’s advantage is that far more people are able to start it, since it requires no opioid-free period first.
Which has fewer side effects?
Both are generally well tolerated. Suboxone causes physical dependence and a taper later; Vivitrol does not, but requires an opioid-free start. Side effects differ by person.
Do you have to detox before Vivitrol?
For opioid use disorder, essentially yes. You need to be opioid-free for about 7 to 10 days, which usually means completing medically supervised detox first.
This article is for general education and is not medical advice. Decisions about Suboxone or Vivitrol should be made with a licensed provider who knows your history.