My brother used/uses it. VERY successfully.
History: 39 YO, drug/alcohol addict since age 15.
Two rehabs, one in house, unsuccessful. Clean and sober almost 3 years. Longest clean previous - 32 days. Don’t hear from him much, Dad does. Don’t know if he is still treating or not, or how long he went.
I must admit, it sounded like snake oil to me, but I have to say I’m impressed, both with the treatment and my Brother.