Sublocade is designed to stay in your system much longer than daily medications like sublingual buprenorphine tablets or films. That long duration is one reason many people choose it for opioid use disorder treatment. It provides steady medication levels over time and removes the need for daily dosing. If you or someone you care about …
Sublocade is designed to stay in your system much longer than daily medications like sublingual buprenorphine tablets or films. That long duration is one reason many people choose it for opioid use disorder treatment. It provides steady medication levels over time and removes the need for daily dosing.
If you or someone you care about has questions about how long Sublocade lasts, when it wears off, or whether withdrawal can happen after stopping, understanding how the medication works can help. At Portland Treatment, we help people navigate medication-assisted treatment decisions with clear guidance and individualized care.
Table 1. Sublocade at a Glance
| Topic | Details |
|---|---|
| Generic Name | Buprenorphine extended-release |
| Medication Type | Partial opioid agonist |
| Use | Opioid use disorder treatment |
| How Given | Monthly abdominal injection |
| Designed Duration | Roughly 1 month per dose |
| Can Stay Detectable | Weeks to months |
| Prescription Only | Yes |
Short Answer: How Long Does Sublocade Stay in Your System?
Because Sublocade is a long-acting injection, it may remain in the body for several weeks or even months after the last dose. Unlike daily buprenorphine products that leave the system faster, Sublocade forms a depot under the skin that slowly releases medication over time. That means the drug continues entering the bloodstream long after the injection appointment.
For some people, measurable levels may still be present well beyond the final monthly shot. Exact timing depends on:
- How many injections were received
- Dose strength
- Body composition
- Metabolism
- Liver function
- Overall health
- Whether previous buprenorphine use was long term
How Sublocade Works
After injection, Sublocade creates a small medication depot beneath the skin. Instead of entering the bloodstream all at once, the medication releases gradually over time.
This helps:
- Reduce cravings
- Lower relapse risk
- Avoid daily dose fluctuations
- Improve treatment consistency
- Support recovery structure
That same slow-release system is why it can remain in the body longer than many other medications.
Sublocade Half Life Explained
A medication’s half life refers to how long it takes for about half of the active drug to leave the body. Sublocade has a much longer effective half life than short-acting opioids because of its extended-release design. This means levels decline gradually rather than dropping quickly.
For many patients, that slower decline can be beneficial because it may reduce abrupt withdrawal symptoms compared with stopping short-acting opioids.
How Long Does Each Injection Last?
Most monthly doses are intended to provide medication coverage for around 28 to 30 days, but traces may remain beyond that. Some people notice benefits tapering near the next scheduled dose, while others continue feeling stable for longer. Response can vary significantly.
Can You Experience Withdrawal After Stopping Sublocade?
Yes, withdrawal is possible after discontinuing Sublocade, but it may look different than withdrawal from short-acting opioids. Because the medication leaves slowly, symptoms may:
- Start later
- Build gradually
- Last longer in some cases
- Feel milder initially than heroin or fentanyl withdrawal
Possible symptoms may include:
- Anxiety
- Restlessness
- Insomnia
- Muscle aches
- GI upset
- Cravings
- Mood changes
Stopping treatment should always involve a medical plan.
Can Sublocade Cause Withdrawal Between Shots?
It can happen in some cases, especially if:
- Dose is too low
- Severe fentanyl tolerance existed before treatment
- Other substances are being used
- High stress or insomnia is present
- Appointment timing has been delayed
A provider may need to reassess the plan.
How Long After Stopping Sublocade Can Withdrawal Begin?
Unlike heroin or fentanyl withdrawal, symptoms may not begin immediately.
Some people notice issues weeks later as medication levels slowly decline. This delayed timeline can surprise people who assume they are “in the clear.”
That is why stopping medication should involve planning rather than guesswork.
Does Sublocade Show Up on a Drug Test?
Standard employment drug screens often do not specifically test for buprenorphine unless it is added to the panel. Specialized testing may detect buprenorphine or its metabolites.
Testing outcomes depend on:
- Type of test used
- Panel requested
- Lab sensitivity
- Time since last injection
How Long Does Sublocade Stay in Your Bloodstream?
After an injection of Sublocade, buprenorphine is slowly released into the bloodstream over time rather than all at once. This creates more stable medication levels than many daily treatment options.
Because the medication continues releasing from the depot under the skin, blood levels may remain measurable for an extended period after the final dose. For people who have received multiple monthly injections, medication may taper gradually rather than stopping suddenly.
This slower decline is one reason many patients report fewer dramatic ups and downs compared with short-acting opioids.
How Long Does Sublocade Stay in Your Urine?
Drug testing depends heavily on the panel being used. Standard workplace drug screens often do not specifically test for buprenorphine unless it has been added.
When a specialized panel is ordered, buprenorphine metabolites may remain detectable longer than short-acting versions because Sublocade is designed for slow release.
Factors that affect urine detection include:
- Hydration
- Kidney function
- Dose history
- Number of injections received
- Lab sensitivity
- Time since last dose
No online chart can predict this perfectly for every person.
How Long Does Sublocade Stay in Your Saliva or Hair?
Specialized testing methods may detect buprenorphine in saliva or hair, though these are less common than urine testing.
Hair testing can reflect prior exposure for a longer historical window than urine tests, but it is not commonly used in routine settings. Saliva testing generally reflects more recent exposure.
If testing status matters for legal, employment, or treatment reasons, it is best to confirm exactly what panel is being used.
What Factors Make Sublocade Stay Longer in the System?
No two people eliminate medication exactly the same way.
Common factors include:
Dose Strength
Higher monthly doses may take longer to decline.
Length of Use
Someone who has received several consecutive injections may retain measurable medication longer than someone who only had one.
Body Composition
Sublocade is stored in a subcutaneous depot, and body composition can affect medication release patterns.
Liver Health
Buprenorphine is metabolized through the liver. Impaired liver function may change how the drug is processed.
Age and Metabolism
General metabolism can influence how quickly the body clears medications.
How Long Does Sublocade Last for Cravings?
Many people ask a more practical question: When will cravings return?
That timeline varies.
Some individuals feel strong coverage throughout the month. Others notice cravings, anxiety, or increased thoughts about opioids as the next injection date approaches.
This does not automatically mean treatment is failing. It may mean:
- Dose adjustment is needed
- Additional therapy support is needed
- Stress levels are increasing
- Sleep or mental health needs attention
- A different MAT plan may fit better
What Happens If You Miss a Sublocade Injection?
Missing an appointment can increase relapse risk, especially if cravings or stress are already building.
Because Sublocade remains in the system longer than daily medications, some people still have partial medication coverage after a missed appointment. But delaying care can still create instability.
If a dose is missed:
- Contact your provider quickly
- Do not self-medicate with opioids
- Do not use illicit buprenorphine
- Be honest about cravings or slips
- Get a re-stabilization plan
Can You Feel Sublocade Wearing Off?
Some people report noticing:
- More cravings
- Restlessness
- Sleep disruption
- Mood changes
- Increased focus on opioids
- Anxiety
Others feel stable right up to the next dose.
This depends on biology, stress level, counseling support, and recovery environment.
Does Sublocade Build Up Over Time?
With repeated monthly injections, steady-state levels can develop. That means medication levels become more consistent over time.
This can be helpful because many patients report:
- Better craving control after early months
- Fewer ups and downs
- More stable routines
Table 2. Sublocade vs. Daily Suboxone
| Topic | Sublocade | Daily Buprenorphine Products |
|---|---|---|
| Dosing | Monthly | Daily |
| Convenience | High | Moderate |
| Risk of Missed Doses | Lower | Higher |
| Steady Levels | Strong | Variable |
| Stays in System | Longer | Shorter |
| Diversion Risk | Lower | Higher |
Is Staying in the System Longer a Good Thing?
For many people, yes. Longer duration can mean:
- Better adherence
- Fewer cravings
- More stability
- Less daily decision fatigue
- Lower relapse risk during stressful periods
But every recovery path is personal. Some people prefer monthly injections, while others do better with different treatment models.
Can You Detox from Sublocade?
Yes, but it should be medically supervised. Because the medication can linger, some patients benefit from:
- Structured taper planning
- Symptom monitoring
- Sleep support
- Counseling
- Relapse prevention planning
- Transition to another MAT option if needed
Portland Treatment can help individuals evaluate safe next steps.
Table 3. Sublocade vs. Vivitrol vs. Suboxone: Duration Comparison
| Medication | Typical Dosing | Stays in System | Main Use |
|---|---|---|---|
| Sublocade | Monthly | Long | Opioid use disorder |
| Suboxone | Daily | Moderate | Opioid use disorder |
| Vivitrol | Monthly | Long | Alcohol / opioid relapse prevention |
When Is It Time to Reevaluate Treatment?
Talk with a professional if you experience:
- Cravings before next shot
- Repeated missed appointments
- Side effects
- Desire to stop suddenly
- Return to opioid use
- Depression or anxiety worsening
Medication works best as part of a full recovery plan.
When to Seek Help
If you are:
- Missing doses
- Using opioids while on treatment
- Wanting to stop abruptly
- Experiencing cravings
- Concerned about withdrawal
- Unsure which medication fits your goals
If you are worried about relapse, cravings, missed doses, or stopping medication too soon, professional guidance can make the difference between instability and progress. Portland Treatment helps people across New England with evidence-based opioid addiction treatment, detox planning, and long-term recovery support.
Frequently Asked Questions About Sublocade’s Half-Life
How long does Sublocade stay in your urine?
It depends on testing method and time since the last injection. Because it is extended release, detection may last longer than short-acting buprenorphine products.
How long after the last shot can withdrawal start?
Some people may not notice symptoms right away because medication levels decline slowly.
Can I stop Sublocade cold turkey?
You should not make changes without medical supervision.
Is Sublocade stronger than Suboxone?
They are different delivery systems. “Stronger” is not always the right comparison. Treatment success depends on fit, stability, and response.
Can I switch from Sublocade to another medication?
Yes, but transitions should be medically managed.
Sources
Indivior Inc. (Prescribing information for Sublocade). U.S. FDA approved labeling.
https://www.sublocade.com/
Drugs.com. (2026). Sublocade: Package insert / prescribing information. Retrieved from https://www.drugs.com/pro/sublocade.html
Indivior Inc. (2026). How Sublocade works. Retrieved from https://www.sublocade.com/how-sublocade-works
Substance Abuse and Mental Health Services Administration. (2025). Medications for substance use disorders. Retrieved from https://www.samhsa.gov/substance-use/treatment/options
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John Ingham
John Ingham is a respected leader and medical content writer specializing in behavioral health, addiction treatment, and other mental health. With more than a decade of experience in the recovery and treatment field, his work has been featured across leading treatment networks and educational platforms, and has contributed as a lecturer in graduate level seminars within the Steve Hicks School of Social Work at University of Texas at Austin, and undergraduate seminars at Vanderbilt University. John's work has also been recognized in public service announcements, documentaries and more, including a feature that won an Emmy Award. John has collaborated with presidential appointees in the White House, clinicians, program directors, and other leaders throughout the behavioral health space, further establishing his role as a trusted voice in the field.
