My recollection is that Darvon only partially addresses the needs of heroin addicts, even though it's chemically related in
structure to methadone
. I can tell you it's not a good pain killer if pain relief is what you're after. However, as I understand it, after being on methadone for a period of time, methadone, at that dosage, ceases to provide pain relief, only controlling the cravings, which, of course, is its mission to start with.