Mum of Heroin Addict

My son is in a dark place and is addicted to Heroin. He has not long been out of prison and I had hoped his prison sentence would knock some sense in to him but sadly not.
It has been painful but I have asked him to leave because I can no longer cope with his addiction and how his addiction has turned him in to someone I don't know. I have lost my son to this beast called Heroin.
There is no support for families affected by drug addiction. I am feeling at my lowest but I know I have to battle on and think about myself and my health.