I have used dnp twice. I used crystal dnp at 250mg per cap. The first time I used it, I went up to 3 caps/day over about a 2.5 week period at the beginning of May.
At one cap per day for 4 days. Didn't really feel anything, just a little hot. But didn't suffer too much in the gym.
Then went to 2 caps/day for a week. I started to feel hot all the time, but it wasn't anything I couldn't handle. My lifts started to go down at the gym and I began to lack energy.
I had several sides. One was a headache when I woke up. I would usually drink a glass of vegetable juice which is low cal and has a crap-load of potassium. (I couldn't ever find an electrolyte supp, but I didn't look too hard either.) I also drank a lot of extra water and in retrospect my normal intake would have been fine. I tried this theory out my second cycle and I noticed that the headaches were not as common.
Another odd side was hip pain. It wasn't just a fluke either as it also happened my second cycle. Specifically it was my hip joint/muscle. It seemed lying on my side while sleeping would cause a sort of deep cramp in that area but would go away when I changed positions.
Also I would soak the sheets. Thankfully I have a king-size bed and can roll around a bit. lol
Then it was another 6 days at 3 caps/day. This was when I really started to sweat. I would sweat just sitting in a chair. I would lay on the couch with a fan on me, when I got up I could feel the wetness on the cushions. It wasn't the most pleasant of times.
As for sides the headaches were about the same. Just chugged a little veggie juice when I could feel one coming on.
My time at the gym really started to suffer. I had to reduce my weights more than I intended. It was the same volume but not the same quality that I usually strive for. Cardio was difficult in that I was tired enough to lack motivation to stay on the treadmill for 30 minutes at a time. And even ten minutes would completely drench my shirt.
Overall I lost 8 lbs in that time frame. Not bad for 17 days.
I also measured one particular spot with a caliper. I always measure just above the illiac crest. And that spot showed to have went from 20mm to 14mm. So far I have maintained that spot at 14mm and have jumped back up to 205.
My second cycle was a few weeks ago. I started out at 2 pills/day because I felt that one pill wasn't really that effective for me.
As I said earlier, I tried drinking my normal amount of water and I seemed to not get headaches nearly as much as the first cycle.
The problem with this cycle was that it was just too hot. I couldn't use a fan at work either so I was really just too uncomfortable. I was at 2 pills per day for about 10 days and lost a couple pounds. Nothing to write home about. But I skipped the cardio, dumb I know. My head wasn't in the right frame of mind and I just thought the dnp would compensate-wrong! So I don't plan to take this stuff in the middle of summer anymore. It's too damn hot lol.
Overall, it seems that a lot of the danger of burning up from the inside out is overstated. I constantly took my temp and it rarely got to 99.3 at 3 caps. Just don't blast to 3 caps on your first dose. Allow your body time to adjust. Slow and steady. Don't forget that you don't have to dose every 24 hours eitherAnd remember not to do anything stupid like alcohol or other diuretics. And don't forget about the cardio. Dnp will increase fat oxidation but the cardio will also help with that.
Don't forget that you don't have to dose every 24 hours either. For instance you could take 2 pills over 36 hours which won't be as intense as 2 per 24 hours.