Alcohol cravings can affect concentration, relationships, routines, and other parts of daily life. Vivitrol for alcohol is an extended-release form of naltrexone given as a monthly injection. It works by blocking opioid receptors involved in alcohol reward, which may help reduce cravings and heavy drinking for some people. Understanding how Vivitrol works, who may be a candidate, potential side effects, and how it fits into a broader treatment plan can make it easier to discuss options with a qualified healthcare professional.

What is Vivitrol and how does it work for alcohol dependence?
Vivitrol is an extended-release form of naltrexone that is administered as a once-monthly injection. It may be considered as part of medication-assisted treatment for alcohol use disorder when clinically appropriate. Unlike medications that create an aversive reaction to alcohol, Vivitrol works through opioid receptors involved in alcohol reward.
How Vivitrol works in the brain
So how does Vivitrol work, and does Vivitrol work as well as people hope? The science is straightforward. The Vivitrol medication contains naltrexone, an active ingredient that blocks your brain. It targets your mu-opioid receptors, the same receptors involved when drinking alcohol triggers a release of feel-good chemicals.
This is how Vivitrol works for alcohol specifically. By occupying those receptors, the medication neutralizes the euphoric rush you normally feel when you drink. Because the drink no longer delivers that reward, your brain gradually stops demanding it. Over time, that is what eases alcohol cravings and gives you the mental space to focus on therapy.
The Vivitrol shot is not a standalone cure. It works best as part of a comprehensive treatment plan built around your goals. Among its uses, Vivitrol is prescribed for adults who are committed to sobriety and want steady craving support without a daily pill. Many people want to know what a Vivitrol shot is and how it feels compared with taking oral medication every day.
For many people, the appeal of Vivitrol for alcoholism is that it removes a daily decision point. Instead of facing the choice to take a pill each morning, you get one injection and can turn your attention to therapy, work, and relationships. That does not mean the shot does the work by itself, but it lowers one of the biggest day-to-day barriers to staying on track.
Alternative medication for alcohol use disorder: oral naltrexone vs. Vivitrol
When comparing options for alcohol use disorder, you might weigh daily pills against a monthly shot. Oral naltrexone is a common choice, but daily pills only work with strict consistency. Studies show oral medication needs more than 85 percent adherence to keep effective levels in your bloodstream. If you forget a dose, your relapse risk climbs quickly.
A monthly injection removes that daily burden. You visit your provider once every four weeks, which keeps your medication levels steady without daily effort. You do not have to make the choice to take a pill every single morning, which frees up mental energy.
You can spend that energy on counseling, rebuilding relationships, and actively participating in your recovery program. Always talk with your doctor about possible side effects before choosing a path. You can also read more about extended-release naltrexone pharmacology to understand how it differs from daily pills.

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Who is a good candidate for Vivitrol?
Vivitrol is highly effective, but it is not right for everyone, so a thorough medical evaluation always comes first. You must meet specific health and lifestyle criteria to start this medication safely.
Here’s who generally qualifies for this medication-assisted approach. Your doctor will confirm these details during intake.
- Completed detoxification. You must have already stopped drinking and finished a medically supervised detox before your first injection.
- Committed to therapy. Strong candidates actively participate in behavioral counseling, since medication alone is rarely enough for lasting change.
- Free of opioids. You cannot have any opioids in your system, because combining them with this medication causes sudden, severe withdrawal.
Who may not be a good fit
On the other hand, some people are not good candidates for Vivitrol. Certain medical conditions make the treatment unsafe, and your care team will screen for them.
- Active opioid use. If you currently use pain medication or illicit opioids, the shot can trigger dangerous opioid withdrawal.
- Severe liver problems. People with acute hepatitis or serious liver damage should avoid this medication, so your provider will run blood tests first.
- Active drinking. You cannot receive the injection while still drinking, since abstinence is required before starting.
Always consult a qualified healthcare provider for personalized medical advice. They will review your history carefully to prevent complications and confirm the medication is the safest, most effective choice for your body and your recovery goals.
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Benefits and potential side effects of Vivitrol
The clinical benefits of this medication are encouraging for anyone seeking sobriety. Research shows a 25 percent greater reduction in heavy drinking days for patients using this treatment, which means fewer episodes that threaten your progress. Patients who combine the medication with comprehensive rehabilitation are far less likely to relapse than those recovering without it. Because the injection releases medication steadily over the month, its craving-reducing effect does not depend on you remembering a daily dose.
Common side effects to expect
It also helps to understand the potential side effects of Vivitrol. Like any medication, it can cause reactions as your body adjusts. The most common Vivitrol side effects are mild and fade quickly, including temporary nausea, a mild headache, or changes in sleep during the first few days.
You might also notice a reaction at the injection site. Because it is given as a deep muscle shot, the area can feel tender, swollen, or bruised, and in rare cases, more serious tissue reactions occur. Report severe pain to your medical team right away. For more detail, review Vivitrol side effects.
Most side effects can be managed with simple steps. Staying hydrated, eating before your appointment, and resting afterward can ease early nausea or fatigue. Your care team will also review any other medications you take to avoid interactions. If a symptom lingers beyond a few days or feels severe, tell your provider so they can adjust your plan.
Drinking while on Vivitrol
People often ask about mixing Vivitrol and alcohol. Drinking on this medication is dangerous. You will not feel the euphoric buzz, but you will still have all the physical impairment that alcohol causes.
You can still lose coordination, memory, and judgment. Because you do not feel intoxicated in the usual way, you face a higher risk of accidental alcohol poisoning.
| Clinical Benefits | Important Considerations |
|---|---|
| Reduces biological cravings over time | Must be completely abstinent before starting |
| Once-monthly convenience removes daily pill burden | Potential for injection site reactions |
| Significantly lowers relapse rates in clinical studies | Requires comprehensive behavioral therapy to work best |
| Decreases the frequency of heavy drinking days | Can cause severe withdrawal if opioids are in your system |
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Combining Vivitrol with comprehensive care in Colorado
Vivitrol may address some of the biological reinforcement associated with alcohol use, but medication does not address every factor that can contribute to an alcohol use disorder. Counseling, behavioral therapies, mental health treatment, social support, and an appropriate level of care may all be considered as part of a broader treatment plan. Treatment intensity can change over time based on withdrawal risk, alcohol use patterns, physical health, mental health concerns, daily responsibilities, and progress in recovery.
Levels of care that support Vivitrol treatment
The appropriate level of care depends on individual clinical needs and how much structure is necessary at a given stage of treatment.
PHP Colorado may provide a highly structured daytime setting while allowing someone to return home outside treatment hours.
An intensive outpatient program Colorado can provide structured therapy with greater flexibility for work, school, or family responsibilities.
Outpatient rehab Colorado may be appropriate when less intensive support is clinically suitable.
Vivitrol may be considered alongside different levels of care depending on medical history, alcohol use, treatment goals, and response to the medication.
Behavioral therapy and mental health care
Medication may help reduce cravings or alcohol reward, but behavioral treatment can address triggers, coping patterns, stress, relationships, and other factors associated with continued drinking.
Cognitive behavioral therapy may help identify thoughts and behaviors connected to alcohol use and develop alternative coping strategies.
When alcohol use disorder occurs alongside depression, anxiety, trauma-related symptoms, or another psychiatric condition, dual diagnosis treatment centers Colorado may address both substance use and mental health concerns within the same overall treatment plan.
Support that continues after treatment
Recovery support may continue after a more structured phase of treatment ends. Counseling, peer support, family involvement, recovery-focused routines, and continued medical follow-up can help address challenges that emerge over time.
Vivitrol treatment may also continue when a prescribing healthcare professional determines that the medication remains appropriate. There is no single treatment duration that applies to everyone.
Family therapy may be considered when family involvement is appropriate and the individual receiving treatment consents to participation. It can help address communication, boundaries, and the ways alcohol use may affect relationships.
Medication and behavioral care serve different purposes. Vivitrol may help reduce some of the biological reinforcement associated with alcohol, while therapy can address coping strategies, emotional concerns, relationships, and patterns that contribute to alcohol use.
The results of this combined approach are striking. When the medication is paired with counseling and behavioral therapy, patients see much stronger results in achieving and holding onto sobriety. The medication clears the fog, while therapy gives you the tools to navigate daily life. You can read more about this evidence-based approach to psychosocial interventions from national health experts.
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What to expect with Vivitrol treatment
A qualified healthcare professional administers Vivitrol as an extended-release intramuscular injection. Before starting treatment, medical history, current medications, opioid use, liver health, and other safety considerations may need to be reviewed.
How the Vivitrol injection is given
Before the first injection, a healthcare professional may review liver health, current medications, alcohol use, and possible opioid exposure. Opioid use is especially important because naltrexone can trigger precipitated withdrawal when opioids remain in the body.
Vivitrol is administered as a deep intramuscular injection, typically into the gluteal muscle. The medication is designed to release naltrexone gradually over approximately one month.
How long Vivitrol lasts
Each Vivitrol injection is designed to provide extended-release naltrexone for approximately one month. This removes the need to remember a daily dose of oral naltrexone during that period.
Follow-up timing and subsequent injections depend on the prescribing plan, treatment response, side effects, and whether continued medication remains appropriate.
How treatment may change over time
Response to Vivitrol varies. Some people experience reduced cravings or heavy drinking, while others may have a more limited response. Medication does not remove every psychological, behavioral, or social factor associated with alcohol use.
A broader treatment plan may evolve over time based on symptoms, medication response, mental health needs, support systems, and recovery goals. Regular counseling, peer support, medical follow-up, and other forms of behavioral care may continue alongside medication when appropriate.
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Key Takeaways
- Vivitrol is a monthly naltrexone injection used to treat alcohol use disorder by reducing cravings and blocking the effects of opioids.
- As a once-a-month shot, it offers a convenient alternative to daily pills, helping individuals stay consistent with their treatment plan.
- The appropriateness of Vivitrol depends on a person's medical history, liver health, current substance use, and overall treatment goals as part of a broader recovery program.
Frequently asked questions
How can Vivitrol help with alcohol addiction?
Vivitrol is an extended-release form of naltrexone approved by the FDA for alcohol dependence. It works because naltrexone blocks opioid receptors involved in alcohol reward, which may reduce cravings and heavy drinking for some people. Vivitrol is not habit-forming and is not a controlled substance. It is generally used as part of a broader treatment program that may include counseling or other behavioral support.
What should someone know before taking Vivitrol?
Before taking Vivitrol, a healthcare professional should review current medications, liver health, alcohol use, opioid dependence, and recent use of opioid-containing medicines or opioid street drugs such as heroin. Starting Vivitrol while opioids remain in the body can cause sudden opioid withdrawal and severe opioid withdrawal symptoms.
Who can receive Vivitrol safely?
A person may be considered to receive Vivitrol after an appropriate medical evaluation and, when opioid use is involved, after being opioid-free for the required period. People with acute hepatitis, active liver failure, or certain other medical conditions may not be appropriate candidates. Severe reactions such as chest pain, allergic reactions, or breathing difficulty require emergency medical help.
What are the serious and common side effects of extended-release Vivitrol?
Common side effects may include nausea, vomiting, decreased appetite, muscle cramps, joint pain, sleep problems, and injection-site discomfort. Serious side effects can include liver injury or severe allergic reactions. Anyone experiencing significant symptoms should contact a healthcare professional, while severe breathing problems or other emergency symptoms require immediate medical attention.
Can Vivitrol prevent relapse or opioid overdose?
Vivitrol may help reduce cravings and block some rewarding effects of alcohol and opioids, but it does not guarantee relapse prevention. It also does not provide pain relief. Because opioid tolerance can decrease during treatment, returning to previously tolerated opioid doses after stopping Vivitrol can increase overdose risk. A recovery journey usually benefits from medication, counseling, and other supports working together rather than relying on Vivitrol alone.
Start your recovery with Red Ribbon Recovery Colorado
Vivitrol may be one option for adults with alcohol use disorder who are considering medication as part of a broader treatment plan. Whether the monthly injection is appropriate depends on current alcohol and opioid use, medical history, liver health, other medications, potential side effects, and individual treatment goals. Contact us by calling (303) 219-3980 with questions about Vivitrol, alcohol use disorder, and treatment options with Red Ribbon Recovery Colorado.
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Sources
- National Institute of Health. (2023). Naltrexone – StatPearls. NCBI Bookshelf.
- Substance Abuse and Mental Health Services Administration. (2025). What is Naltrexone? Side Effects, Uses, Dose & Risk. SAMHSA.
- National Institute of Health. (2008). Chapter 5—Extended-Release Injectable Naltrexone. NCBI Bookshelf.
About the content

Written by: Carli Simmonds. Carli Simmonds holds a Master of Arts in Community Health Psychology from Northeastern University. From a young age, she witnessed the challenges her community faced with substance abuse, addiction, and mental health challenges, inspiring her dedication to the field.

Medically reviewed by: Jodi Tarantino, MSW, LICSW. Jodi Tarantino is an experienced, licensed Independent Clinical Social Worker (LICSW) and Program Director with over 20 years of experience in Behavioral Healthcare. Also reviewed by the RRR Editorial team.
Red Ribbon Recovery is committed to delivering transparent, up-to-date, and medically accurate information. All content is carefully written and reviewed by experienced professionals to ensure clarity and reliability. During the editorial and medical review process, our team fact-checks information using reputable sources. Our goal is to create content that is informative, easy to understand and helpful to our visitors.

