ok ive done dxm many many times now i actually built up quite a tolerance i usually take 2 bottles of Robitussin 118ml for my trip. yesterday was actually the weirdest trips ive ever had... i took 2 bottles I was a bit tired so i laid down for a second to wait for it to kick in i accidentally fell asleep and woke up 30 minutes later pretty high then i walked to my computer and started browsing then all of the sudden out the corner of my eyes im seeing full blown hallucinations of people talking sitting down standing next to me.. no there was no audio at all then all the sudden i was on the train im seeing people going up and down escalators people walking down hallways but as soon as i turn my head to look it disappears then when i look forward again it happens again... this sort of freaked me out a little because this never has happened to me before especially off 2 bottles... it wasn't a bad experience i definitely want this to happen again but man was that weird..... has anyone ever had this kind of experience before on dxm? which plateau did i hit?