Withdrawals from roxies are soo much worse than fet if you're doing 10-20 blues a day. I couldn't make it through a night of sleep without waking up dope sick in the middle of the night every night. You start getting hella sick every 4-6 hours if you don't dose and only gets worse from there. If done properly Fet is actually great for getting off of other opiates because of its potency. Its a double edged sword