The people you have talked to, and who have responded, are WRONG. There is a cure, for your father and your boyfriend. But they have to be willing. I'd like to tell you a story. Probably the best-kept secret in the narcotics rehab community. In the early 1980's, the narcotics addicts were filling the New York jails, and if they were probated, they went right back to robbing, burglarizing, mugging, etc. to get their next fix. Well, a drug was approved, called Naltrexone. Trade name Revia. You could give the addict the Revia at the local community center as the term for their probation. They swallowed it down, and stayed in the room for a half hour. After that, free to go. Because even if they were to throw up, it would be sufficiently absorbed.
The Revia is an oral version of naloxone (Narcan), which ties up the body's narcotic receptor sites. A person in respiratory depression from a narcotics O.D., with enough to kill a horse, could be up and chatty within minutes after an I.V. push of Narcan. So there was no point in taking any narcotics, the sites were not available. So the addicts were able to be probated. But, they HATED it. It made them feel terrible, without a way of getting better.
Anyway, a neurologist named Bihari was part of the naltrexone administration. He wanted to know why an addict would go right back to doing it, even though they ran the risk of "cold turkey" if they got caught. He hired a researcher, who found that addicts were only running a third of the endorphins of the 'normal' population, so the heroin etc. was a self medication.
Long story shorter, he found that if you give the addict a small portion of the naltrexone, at bed time, the body checks its supply around 2 in the morning, finds it at zero, and brings the endorphin level to as much as 5 times what it would have been. So the addicts were waking up WITH NO NEED FOR THE HEROIN.
The Naltrexone has been approved, in the 1980's, as a rehab drug for narcotics and alcohol. And in Europe, they have what's called the Sinclair Method, by which an alcoholic takes one a half hour before drinking. Within 3 months, they can function as a social drinker.
Think about that, and read the article at the first site I've given. And that a one-month prescription for Revia can be more than a year's supply of Low Dose Naltrexone (LDN), since each 50 milligram Revia can be dissolved in 50 cc's of distilled water, and then just 3 cc's (for 3 milligrams) can be drawn up in a pediatric medicine dropper and taken in juice or whatever before bed time, and that single tablet can be sufficient for 16 doses of LDN. Should be easy to get a one-month prescription for Revia, to "try" it, as a recovered addict. Just don't mention the LDN part.