Owing to clinical observations that patients adhered poorly to an oral daily regimen of naltrexone, the extended-release formulation Vivitrol was developed for monthly intramuscular injection.

Office 203-481-5556 fax 203-481-5553. Addiction treatments with Suboxone, Sublocade (monthly Suboxone injection), Vivitrol Inj (Naltrexone). Treatment for withdrawal symptoms (Lucemyra).