It sounds like some pretty scary stuff. It can cause acute liver and/or kidney failure, kind of like acetaminophen can do. The stuff isn't really like belladonna or datura, it's more like an actual poison where the plant itself could cause your liver and kidneys to go completely defunct and you die of acute organ failure. That's seriously not a risk you'd want to take. Even if the plant didn't kill you, ingesting it could result in you needing dialysis or other medical treatments for the rest of your life. Yeah, the anticholergenic stuff like belladonna and datura are dangerous in the sense that the delirium can be so intense that you could do something like wandering out in front of a bus, trying to fly, etc., etc. and die that way. However, the plants themselves rarely kill anybody or damage any organs. I've entertained the idea of trying belladonna or datura with a good sitter that was experienced with psychedelics. However, hell would freeze over before I'd even entertain the idea of trying vinca after I read about it. It honestly sounds about on par in terms of danger and low quality experience as huffing paint or sniffing glue. Although, it's worse, because even with paint huffing any disastrous outcomes would happen instantly. With this stuff, liver or kidney failure could set in long after taking it making the hours and days after messing with it downright nerve wracking, even if it didn't kill you. Everything I have read about this stuff just screams
poison. It talks about it on WebMD and other medical sites as an extremely toxic substance to the liver and kidneys.
The trip report I was talking about also sounded like a very bad trip, which is very unsurprising given what I have heard about the stuff. I wouldn't even call it a trip so much as that his spirit was starting to leave his body, because he was literally that close to actually dying of the poison in this plant. It wasn't a trip in my opinion, so much as a near death experience caused by nearly accidentally killing himself. This horrific experience also occurred more than
30 hours after he took it, so it wasn't anything at all like any drug....... much more similar to the effects of poisoning, which was what it was. Thankfully, the poor guy didn't die from it, but it sounded to me like he easily could have.