I've withdrawn off alcohol to the point I had seizures. Benzos (luckily no seizures) but extreme panic attacks, sweating, audial hallucinations. Both those experiences were miserable but for some reason kratom withdrawal and the level of depression I reach is just beyond any other withdrawal. Admittedly I would take mega doses of 30 grams at once (about every 15 hours) and basically nod out even though its supposed to be a weak opiate but I read of other people who say they took kratom and even at high doses the withdrawals were nothing.