Where can I find drug treatment programs?

I have a friend who is addicted to drugs. And I would like to help him clean his act. We’ve been friends since college but after getting fired from his work, he turned to drugs. I’ve been telling him to stop but he keeps telling me that he will eventually. I would like to help him seek professional help before he gets worse. I am scared that he would get AIDS out of sharing needles with his ‘drug friends’. Can anyone tell me where I can get him drug treatment programs?

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