Yeah, when I was at a state university a few years back I was big into robo tripping. Did CCC's a few times but I hate taking a lot of acetaminophen so I just stuck to extra strength Robo where the only active ingredient is DXM. Would always take 2 8 oz bottles but one time I bought 3 bottles and had half of one at the dorm and me weighing 220 lbs that was on the high end of a 4th plateu trip. Was more than I SHOULD have taken but with research I felt it should be safe (risk of OD 2,500 mg-20,000 mg according to erowid) I was over the light end but everything always took me more to get me going not smart but I did it. Trip was alright, I was GONE but I felt like I had drank a handle of alcohol and was tripping. I just could barely get my body to do what I wanted, took for ever to smoke and walk around. I had to think for like 2 minutes just to be able to speak and would studder horribly when I did speak. When I was lying on my bed I was just watching colors in the ceiling flowing together then started to think bad. Got over it when I changed the music but I was lying there picturing my roomate waking up in the morning looking at my white cold dead body. I was looking down on myself and seeing myself lying there dead and I wasnt sure if I had already gone. Changed the music from Shpongle to Grateful Grass and felt much better. And usually Shpongle is one of my favorite bands to trip to.