DNP can cause an histamine response so that's why an anti-histamine is useful. Some guys when dieting also struggle to sleep so adding in a drowsy one such as benadryl is smart because it helps in both regards. I should add even just the dieting can cause sleep issues but the potential heat from dnp is another factor as is the fact many use stimulants when also dieting. DNP is not a stimulant so you don't have to worry about that. If anything it can cause fatigue but when using a sensible dose that should be manageable. I struggle from fatigue without dnp so it can hit me hard but I can still train just as hard but a good preworkout will always help. We sell all the fatburners but you only see me really recommending DNP because it's the best by far and you can get incredible results from it with minimal side effects. It's quite simple just stick to 1 x 250mg cap and you could start that EOD to see how your respond and after 1 week if you are fine move up to 1 cap daily. That combined with an effective diet and the results are incredible. I would much rather do that then use the likes of clen (which we sell) and you feel edgy and are shaking in the gym.