I've tried it but found it the sides so unpleasant I gave up after a week. The other thing about DNP is because it depletes your glycogen etc for the first two or three days you don't experience any fat loss and as you also start to retain water which gives the impression your DNP is completely under dosed or fake, so you increase the dose.
You then find that you've taken too much DNP - it has an unusually long half life for an oral - and apart from losing all your strength (you dont have any glycogen in your muscles) you are sweating constantly and even struggling to breathe at times as your body needs a lot more oxygen to metabolise the fat.
I suggest that you accept the misery of cardio instead as it won't kill you and as soon as you stop all the unpleasant feelings go away whereas with DNP you'll feel uncomfortable 24 hours a day.