"Medication-assisted opioid therapy includes the use of methadone or buprenorphine for the treatment of opioid addiction or dependence and the use of extended-release injectable naltrex-one (Vivitrol®) for relapse prevention in opioid addiction.

According to SAMHSA, "There was a net increase of 526 responding [substance abuse treatment] facilities between 2015 and 2016, to 14,399 facilities." (p. 11)

"Facilities were asked how many clients in treatment on March 31, 2016, received medication-assisted opioid therapy drugs for detoxification or maintenance purposes. MAT includes the use of methadone and buprenorphine for the treatment of opioid addiction or dependence, and the use of extended-release injectable naltrexone (Vivitrol®) for relapse prevention in opioid addiction. Methadone is available only at OTP facilities that are certified by SAMHSA’s Center for Substance Abuse Treatment.