Unfortunately, this is a world wide website. You will be lucky if someone can refer you to help in that area of the world.
With that said...all he needs to do is to go to his doctor and ask for help, if he is serious about getting help. The doctor should then refer him to a treatment program.
This is not something he is going to be able to stop by himself. He is going to need inpatient drug rehab.
A simple google search returned this...
Google