Never done it except in tiny tiny doses, but read how one guy claims it permanently screwed up his mind, just from one dose. It has a very interesting history, if you care to look up "flying ointment" you'll get an idea. ... If you take it, don't be surprised if you wake up in jail or a hospital, then find out you broke into a stranger's house naked in the middle of the night but don't remember a thing. That's the kind of trip witches and sorcerers used to have when they took the crap... and that's probably why some of them got burned at the stake. Just to be clear, anyone who does it is a friggin' idiot. Might as well random shoot nails into different parts of your brain to see what it does to your state of mind.