My son is also 20 a cocaine addict however I think he has graduated to crack. Been to two rehabs both for 3 months came out and relapsed within a month. He now is on a waiting list for a six month program. It is exhausting because we really dont know what the future holds for them. You will appreciate the break knowing he is safe and drug free for the 6 months. Our son will not be coming home this time after rehab. We are desperately hoping he gets in to an after care program. We are still in the process of learning by not helping them, it is making them help themselves. So hard as a mother I feel for you. Keep coming back to this board its a great support.