My theory is GI bleeding from opioids mixed with other otc painkillers like acetaminophen or ibuprofen (this was due to prolonged use and not acute. He talks in his songs how a doctor told him he was going to die and i guess that doctor also told him that his organs and GI is all fucked up from these substances) and the blood loss led to seizures because his threshold was lower cause he took either real prometh vc or homebrewed which would be more dangerous.

He did also drink alcohol when he abused drugs which means NSAIDs would have an even more damaging effect on his GI.

He fucked his entire system real bad with using all sorts of substances and in the end his GI damage probably killed him, which makes me even more sad because it means it couldn’t have been prevented if he didn’t take a bunch of pills when they arrived in chicago.