I've never used crystal DNP. But I here it is outrageous compared to powder. How many days have you been using it? Mine really started to kick in around day 3. It took my body a couple days to even get control of itself I was sweating so much. The side effects didn't seem to taper at all until days 6 or 7. You might want to add T-3 and/or ECA along with it. I literally sweated through my clothes, had sweat rolling of my face constantly, and one time while I was at my desk at work I looked down and actually had a puddle forming on my desk where the sweat was dripping off my face. Unless you are one HUGE mofo, I would think 600mg would be kicking your ass mid cycle.