Clonidine
"I was addicted to the most powerful opioid carfentanil unknowingly and the withdrawals are so bad that they can be fatal. The first day I tried to quit I took an 8mg sub and it didn't even help and I had to be rushed to the hospital. So I relapsed the next three days. Then I finally found out what I had been taking and decided to go to ER the next day and tell them. I told them to keep me cause I didn't know what would work. The doctor told me he'd prescribe clonodine and send me home. I never heard of that and didn't think it would work so I pleaded with him for me to stay. That didn't work. So I got them filled and took them and they kicked my withdrawals ass. Way better than a suboxone."