Are you taking all six at once or 2 pills 3x a day? 2pills 3x a day wouldnt make me shake at all, im 195. I took the chinese generic an got the shakes off a 1/2 pill 2x day, which is supposedly the same as 5pills 2x a day. I have a couple blisters of real spiropent, im gonna try them when my 2wks of ECA is up this weekend and see how it compares.