What is vivitrol?

What is Vivitrol?

Vivitrol is an injectable form of naltrexone used to treat opioid dependence and alcohol dependence. It provides a once-monthly dose that helps block opioid receptors and reduce alcohol cravings.

How long does Vivitrol stay in the system?

The drug stays active for about a month after each injection. Patients typically receive a new shot every 28 to 30 days to keep consistent coverage.

What company makes Vivitrol?

Alkermes manufactures Vivitrol. The company produces the extended-release injectable suspension at facilities in Ireland and the United States.

When does Vivitrol patent expire?

Vivitrol holds several patents covering its formulation and delivery technology. Some basic naltrexone patents have already expired, but the specific extended-release technology remains protected through at the least 2030. [1]

Why are companies challenging this patent?

Generic manufacturers have filed paragraph IV certifications against Vivitrol’s patents. These challenges claim that certain patents are invalid or not infringed by proposed generics. The timing of any generic entry depends on litigation outcomes.

Can biosimilars enter before patent expiry?

Vivitrol is a drug product rather than a biological product, so biosimilars do not apply. Generic versions of the extended-release naltrexone injection may become available once the remaining patents expire or after litigation settles.

DrugPatentWatch.com