Ive done both LSD and mushrooms about 40-50 times, i never really counted but if i had to guess thats would be in the ballpark. But neither of these, or any other psychedelic will EVER be on the same level of madness as DMT. 15 minutes long, compared to the 6-8 hours you get with either of those, but a thousand times more potent. DMT is not one to mess around with though, if you fight it at all, or take just a little too much, your brain is fucked forever. The first time I tried it, i felt as though i was being shot into space at a ridiculous speed, euphoria ensued instantly, and the world of which i have come to learn and understand since birth was torn to pieces before my eyes. 5 minutes seems like days, as i was catapulted into a realm of the most intense, and vivid audio and visual hallucinations i could possibly fathom. Defiantly one for the books, but i will never touch it again.