I’ve been an opioid addict for several years. It started with roxycodone, then deludids, and about 2.5 years ago I moved up to heroin/fentanyl. 
The sickness when I don’t have it is extremely bad and unbearable. The same with Xanax withdrawal. I go into seizures when I go so many days without it. But I have gone several years off the Xanax and was doing alright until I started feeling horrible anxiety again, and when I feel like I can’t breathe and my
Chest is super heavy, Or I twitch all over and can’t speak correctly without stuttering, freak out and feel I need it ASAP. 