To get off to a pedantic start, it's "I-Doser." :p
I've tried it, and I find to normally be hit and miss. Originally it was designed to be used when someone was meditating so it's probably not overly effective in most cases, and will naturaly vary quite alot from person to person.
The other issue that's been pointed out is that the drugs aren't exactly the same, more approximations of what the real drug is supposed to do. The most effective one's I've found are the ones that aren't supposed to be a specific substance mimic.
From my own use, and doing some reading, taking (different) doses back to back (which it says isn't advisable) seems to be an effective way to get some effects. (of the last does you take) I got a "hit" off of A-Bomb, it felt completely surreal. I could tell I was still lying/sitting in my chair but at the same time I could move my body in free space around my head. When I closed my eyes I could almost see it as such as well.
@: Z@C, you don't then?
