^That's the mistake I still make. Thinking that another 0.5ml on top of what I have already had won't do much. Also, tolerance - I find that mine doesn't really go up much, even during a week long binge, and after the withdrawal (2 days), it is back to zero. Which would make sense, as once the withdrawal is over, it means that the GABA-B receptors are sort of back to normal. Stop me, if I'm getting too technical. 
