Hi everyone, I need to know what to do as a christian to help some one who is addicted to . Any one know?

I have freind.He is addicted to .Hecame to me for help And as a christain I said I would pray for him But I want to do more.Do you have anything that may have helped you in some way.Or something you know that helped somone esle.I allso wnat to know some bible verses.