I Need Help

Hi everyone :)
I need help! I have a 22 year old son who i love and would do anything for. He use to be so kind, full of life and laughter. For the past 6-8 years i lost him to drugs. I want him back. I miss him very much.We've kick him out probably 100 times and yes we always let him back in when we think he hits rock bottom. He's the biggest liar i've ever met. He stole from us, pawn our stuff even physically fought with his father once. He's been gone for 3 days now. Probably sold drugs so he can have drugs. We've been to hell in back so many times. He doesn't eat when he's using. He smokes weed like it's going out of style. He drinks way more then he can handle. He does pills ( not really sure what kinds). He does coke often enough, probably every weekend or 2nd weekend. He's been to the hospital for trying to kill himself by overdosing on drugs 5 times in the same week. They put him in a ward where i couldn't see him for a few days. When i got there, i see this tiny body walking down the hallway in a gown and ankle strap and wrist strap. He probably weigh about 90 pounds. He was all bones. He tried to fight with the nurses and had to strap him down the night before. While i'm trying not to cry he's freaking out at me for leaving him there, he's hallucinations and seeing bugs and water dripping. The doctor didn't understand how he could be alive from all the drugs that was in his system. He was there for 3 weeks, but he's such a god con that they left him go home before he was really suppose to. Enough with my rambling sorry!
I need help because i don't know what to do anymore. I call the cops when i know he's driving high or drunk. He actually got stop 2 times in the same night, but they didn't do anything but call us to pick him up. He was so drunk he couldn't even walk. I called the cops to come and pick him up because he's going crazy hitting anything and everything in sight. They come and take him to the hospital then 24 hours later his back home. He's my baby. I want him to get clean. Today while i'm talking to God, i'm praying that i need him clean or dead. I feel horrible thinking this way but i can't live like this anymore. I lost so many jobs because of him. I lost all my friends and family because of him. Even his own sister won't talk to him. He has no real friends. He has a girlfriend that he takes advantage of in all the ways possible. He started getting violent with her this summer. He grab her by the throat and was chocking her. I'm always scared, i'm always crying. I'm on anti depressant. I can't have a normal life. I've been thinking about taking my own life for about 2 years. In my mind i think that if i take my life he'll see what he's doing and go for help. Thank God i'm scared of dying. I don't know what to do, who to talk to, where to go. It feels that i lost all hope. My doctor tried helping him, and me but nothing ever really happens. I'm really sorry about rambling on like this. It's been so long since i've ask for help and been keeping everything inside. OMG he just walk in. I need to go.
Dear John john's Mom, you said your son is 22 with all you have mentioned is it possible with all he has done for the doctor to find him mentally unfit. Then what you can do is go to a lawyer get power of attorney over him and if need be have him commited...I know it sounds hard but anyone who has tried to kill himself 5 times in one week , tried to strangle his girlfriend and all you mentioned is not only a danger to you but to himself. I don't know where you live but if it's within the United states have him Baker acted ...then you can have him ordered into a rehab...You cannot allow him to stay in your home..As I have said many times the inmate is running the asulym. ..take my advice I am here for you.
Also the local police department can also Baker act him.act immediately
I can only imagine how strong you are during such a difficult time. My sister has been an addict for 2 years now but it has just gotten worser and worser. You have done so much and can only do the best you can. Calling the cops and sending him away in hopes of him getting clean is the right thing to do. I have done the same but sadly it does not help. We become so vulnerable and become enablers because of the people they use to be not to who they have become. Please don't hurt yourself because of the situation. You are doing your best and there will be a light at the end of the tunnel. We are all looking and hoping for it. I will keep you and your family in my prayers.