I really don't think that's possible. People get bad trips because they respond to the drug differently. It mostly has to do with their state of mind before taking the drug. If you want a bad trip, try an intense dose that you aren't ready for like peyote or hand of god.

I tried a couple that didn't work, but then I tried A-Bomb, and everything after that except for Lucid Dream has worked really well. If A-bomb doesn't work, try Nitrous. It's a ten minute dose where effects set in almost immediately. Sit or lie down, put on some headphones, and focus on the beat. Th...

I've experienced I-doser on my family's PC, but I just got a Macbook and I wish I could put I-doser on it, but it needs Windows. That would be sweet if you developed an i-doser for macs.