I shot up ice for the first time about 4 weeks ago, the first time was obviously insane (I know it'll never be that good again) but the last 4 -5 times I've done it I have barely felt anything. I feel a short buzz for less than an hour and then come down hell fast although I usually cant sleep. I usually go halves in a point with my friend and she mixes it up and helps me to shoot up. I probably have just built up a tolerance to the drug and am being paranoid but is there anyway she could be ripping me off and giving herself more when she mixes it up in the satchel? I usually watch her do it and she gives us 30mls each nothing looks suss to me but I thought I'd ask some more experienced users just to see if its possible she's ripping me off somehow? I even did a full point last week and the same thing happened. Thanks!