{"id":6142,"date":"2026-02-23T08:07:43","date_gmt":"2026-02-23T08:07:43","guid":{"rendered":"https:\/\/resourceful-amethyst-chihuahua.187-124-247-238.cpanel.site\/?p=6142"},"modified":"2026-04-10T15:20:15","modified_gmt":"2026-04-10T15:20:15","slug":"vivitrol-side-effects","status":"publish","type":"post","link":"https:\/\/resourceful-amethyst-chihuahua.187-124-247-238.cpanel.site\/vivitrol-side-effects\/","title":{"rendered":"Vivitrol Side Effects: Common Reactions, Serious Risks, and a Realistic Timeline"},"content":{"rendered":"

Vivitrol is an injectable form of naltrexone<\/a> that can be used to help (1) people recover from alcohol dependence<\/a>, and (2) avoid returning to opioid use after detoxification.[1,2] Starting Vivitrol may raise questions about its side effects.<\/p>\n

The objective of this article is to assist the client with a detailed, factual understanding of naltrexone\u2019s side effects. It will cover common side effects, as well as serious side effects.<\/p>\n

The information provided in this article is intended for educational use only.<\/strong> It is not a substitute for personal medical advice provided by your licensed healthcare provider, who is familiar with your individual medical history.<\/p>\n

What Vivitrol Does and Why People Experience Side Effects<\/h2>\n

Vivitrol is the brand name for naltrexone, which is an opioid antagonist. This means that it blocks opioid receptors<\/a> in the brain and body and reduces the pleasurable effects of opioids and alcohol [1]. Naltrexone is not the “cure” for addiction to opioids or alcohol and is considered to be more effective when combined with therapy and support services for recovery.<\/p>\n

Because naltrexone interacts with how the brain and body opioid receptors respond to substances, some people will have physical or emotional reactions as they adjust to <\/a>using this medication [2].<\/p>\n

Why Vivitrol Side Effects Vary from Person To Person<\/h3>\n

Not all people will have the same experience when taking naltrexone. The variables affecting how each person experiences side effects are: first injection vs. subsequent injections, overall health, liver health, new alcohol use, and opioid clearance status. If opioids are still in the patient’s body, naltrexone can trigger a sudden<\/a> withdrawal, which is why screening and timing are essential [3] to consider when starting treatment with naltrexone.<\/p>\n

Clinical providers monitor the patient during the month after the first injection of naltrexone. Clinical staff will closely monitor<\/a> the patient’s vital signs, any change in mood or emotion, how the injection site is healing, various aspects of well-being, as well as any new symptoms (i.e. breathing difficulty, jaundice, etc.) that could indicate stress on the liver [4]or adverse reactions. If any concerns arise, the clinical provider will respond promptly.<\/p>\n

Common Vivitrol Side Effects<\/h2>\n

The majority of naltrexone patients will experience mild to moderate side effects that improve within a few days.<\/p>\n

Common Symptoms Reported By Vivitrol Patients<\/h3>\n

Patients who are treated with naltrexone report the following<\/a> side effects [2]:<\/p>\n