This is a tough one. Methadone detox is pretty intense. The alcohol slows down the detox too. Our bodies eliminate one to in at a time, for the most part. Methadone stores in fat and bone, so it slowly leaves the body. I felt better at about 30 days, but 90 days was when I really felt like I was healing. If your son keeps self-medicating, alcohol and subs, I fear he will get exhausted and return to an easy out, which is not actually easy at all. I suggest he get into NA, church, counseling, or anything to help him realize he is still trying to take something to feel better. Time and taking good care of himself is the only solution I know. Amino acids, cal/mag/zinc, potassium, and EmergenC helped me the most, but he has to want to be clean for anything to work.
Hi there, and welcome to the forum! I'm so sorry about your son, and I truly hope he will be OK. Do I assume correctly that he lives with you and your husband? I'm sure that must have been very scary to watch him go through that. It really sounds like to me, that your son may need some professional help. Perhaps an inpatient type of rehab? Does he work, have health insurance? I think that would be something you and he should consider. Really, the best thing you can do for him is be an emotional support. Is he committed to getting and staying off drugs? If you are able, check out Alanon meetings. They are for the families/loved ones of alcoholic/addicts. There you will have a community of folks who have been in your similar situation. You and your husband will find lots of advice and support there.
I wish you all the best! Take care!