i smoked quite alot of weed and did 600mg of dxm once, just ko'd and woke up hrs later not buzzing at all HAHA, what a waste. i think that was because i smoked quite a bit of weed, like, 3 bowls.. but yeah, havnt done it in a while now, ill try 1200mg again in powder form, if thats no good i guess i just wont bother anymore.