What Can Be Done to Help Drug Addicts?

For a ppt. i need to name some things to help drug addicts. Not like be friendlier to them when you see one, or give one a dollar, or like coax one into going to rehab (nobody in my class knows a drug addict, thats why). But like legitimate things that we can do, etc. vote on a certain bill, or something like that.Although i do know that giving a dollar to one may help, more long term statuse i suppose. Thanks a lot.