Assertion: methadone | /r/HasProperty | substitute
Facets:
value: for heroin
type: PURPOSE
value: for prescription opioids
type: TRANSITIVE-OBJECT
Source sentences:
text: Myth #1: Methadone is a substitute for heroin or prescription opioids.
text: As a treatment, methadone does not actually stop the opioid addiction; instead, it is a substitute for heroin.