I was tasked with following the rehabilitation of a heroine addict from Portsmouth for a BBC InsideOut special.
I travelled with presenter, Jon Cuthill, who also directed.
The rehabilitation therapy included steaming the toxins out of the skin by having super hot steam baths.

Removing the toxins from inside the body involved a different approach…induced vomiting.
This therapy involved drinking a cocktail made from over 100 herbs and spices from the surrounding jungle.
Only the medicine monk can administer this cocktail, and only he knows its recipe.
The cocktail by itself tased bad enough (apparently), but then 2 gallons of water had to be drunk on top of the cocktail.
This reacted with the water, expanding and forcing the person to vomit.

Other parts of the rehab include spiritualism and lifestyle changes.

It is a therapy that works.