That’s a tough question and depends a lot on what substance(s) is being used. If its an opiate, have your friend take a look at ibogaine therapy; it’s seen some really amazing results for some people, who generally report that it feels like it resets something in their brain and they no longer have any desire for their preferred substance. Obviously, milage will vary, but its definitely worth looking at.

It’s the Therabody RecoveryTherm Cube, and it get’s hot and cold enough on the highest setting it feels intense enough you can’t comfortably use it directly on skin. That said it’s not as cold as an ice pack, but I don’t think that’s the intended use.

It has 3 modes, here are the temps from the manual:

Heat: 24 minutes (95°F, 102°F, 109°F)

Cold: 18 minutes (61°F, 54°F, 46°F)

Contrast therapy: 20 minutes (Cold: 46°F, Heat: 109°F)

I recently found a battery powered device for hot/cold therapy, and it has worked wonders the tendonitis in my arm.

And Starboard has 2 R’s which makes it the right.