I could never take to it as even a small amount - a couple of puffs of a joint and I was off, proper tripping like I'd had acid. No matter how many times I tried over the years, same thing. Seeing things, the lot.
I ended up in n psychiatric hospital at suffering from depression brought on by megs-flashbacks that stayed with me for as long as a day sometimes. I would just be sitting minding my own business and bang! Wah-Wah-Wah....off my head.
I feel very lucky I didn't end up schizophrenic. In hospital they were at me all the time, "do you hear voices, do you hear voices??)
Lucky escape!!