Oct 1, 2011 Over the years, countless times. At a max of 800mg, and a minimum of 400mg. I'm getting curious now of trying it in a way that I never have - 2+ months at just 200mg a day. . . a slow and steady aid. For any who by now don't understand how DNP works - Please be careful if using for your first time. After using it a few days, the level is going to steadily rise in your system. So increase your dosages slowly, because if you have a difficult problem coping with it, or a bad reaction - your blood levels are going to remain high over several days even if you have to stop immediately.