What is Vivitrol?
Vivitrol is the brand name for extended-release naltrexone, an opioid antagonist used in the treatment of alcohol use disorder and (in other formulations) opioid use disorder. Its key point is that the medication is delivered as a monthly injection, which helps maintain steady drug levels over time.
How does Vivitrol work for alcohol use disorder?
Vivitrol (naltrexone) blocks opioid receptors. In alcohol use disorder, this action is used to reduce the rewarding effects of alcohol and lower the likelihood of relapse for some patients.
How is Vivitrol given, and how often?
Vivitrol is given as an intramuscular injection once every month (typically into the gluteal region). Dosing schedules can vary by clinical protocol and patient needs.
What side effects are patients most concerned about?
Commonly reported side effects of naltrexone formulations can include nausea, headache, dizziness, fatigue, and injection-site reactions. Because Vivitrol is an injection, patients may also notice pain or swelling where the shot is given.
Who should not take Vivitrol (key safety checks)?
Clinicians typically screen for:
- Current opioid use (to avoid precipitated withdrawal in people taking opioids).
- Liver problems, since naltrexone can affect liver function in some patients.
- Other medical factors that could make opioid-blocking therapy unsafe.
If you’re searching for “Vivitrol” because you have been told you might need it, it’s especially important to confirm with the prescriber whether you take any opioids (including certain cough or pain products) and to review liver history.
Is Vivitrol the same as naltrexone pills?
No. Vivitrol refers to the extended-release injectable form. Oral naltrexone (tablets) is another option, but it does not use the same long-acting monthly dosing approach.
Does Vivitrol have patents or generics?
If you’re trying to see what manufacturing or market exclusivity looks like for Vivitrol, DrugPatentWatch.com tracks patent and exclusivity information and can help you find the relevant filings and timelines for the specific product.
Sources:
1. https://www.drugpatentwatch.com/