Risks/Side Effects
Hearing all of these wonderful things probably has you wondering what the side effects and risks are. They are quite formidable and contribute to making DNP one of the most intolerable (though effective) drugs used in bodybuilding. Starting with the most significant, and descending in importance, are the following risks and side effects of DNP use.
Risks: Overheating - There is no upper limit to DNP's body temperature increase, meaning that one may literally "cook from the inside" if they take too much. Dosage considerations will be given later, but even an overdose of 4-6 times the recommended dosage may be lethal. Much smaller overdoses may result in damage to the brain and/or other body systems.
Carcinogenesis - Phenols in general are reputed to be carcinogenic. Although 2,4-dinitrophenol has never been implicated in a cancer diagnosis, some are nonetheless concerned, and understandably so. In addition to the inherent carcinogenic potential caused by its status as a phenol, production of free radicals and the release of various compounds stored in adipose tissue stores during DNP's rapid oxidation of fat may also potentially be harmful.
Death - This is self-explanatory and has occurred with several bodybuilders who chose to use this compound.
Side Effects:
Discomfort and sweating - This is the single most noticeable effect of DNP use, both by the user and those around him/her. Even in the winter, while indoors at ambient temperatures, one may expect his or her shirt to be completely soaked through with sweat. Those with jobs requiring formal or semi-formal apparel are advised to consider other means of fat loss (or a new job, if preferred). Other obvious considerations lie in the areas of social life, personal appearance, etc. and the user must prioritize.
Insomnia - Second in frequency of reports to sweating and discomfort is insomnia; this may be at least partially attributed to discomfort. Possible means of countering this include such supplements as Valerian root or melatonin. Alternatively, one may deal with this via prescription or OTC sleep medications or GHB-A precursors. However, these may be addictive if used on a regular basis and if their use may be avoided, by all means abstain from using them.
Yellow bodily fluids - Some don't notice this, but others find that all of their bodily fluids take on a yellowish appearance. Urine is a darker yellow, and even semen and vaginal secretions may be affected. According to current knowledge, this is not known to be harmful in and of itself.
Muscle Soreness - This is yet another thing that may be minimized via cerebral function. Dan Duchaine has recommended using a weight such as to allow no fewer than 15 reps per set of any weight training workout; judging from anecdotal reports and personal experience, this seems to be good advice. Low levels of ATP are a cause of muscle soreness in and of itself; the additional factor of encumbered recovery mechanisms make extreme soreness (and if not careful, catabolism) quite possible.
Allergic Reactions – These are highly individualized but may be summarily discussed. Various reactions are common with DNP use, and approximately 10% of users will be extremely allergic to it. Allergic reactions can include hives, blisters, and/or inexplicable rashes. If you suffer any of these side effects, and they are extremely bothersome, it is the recommendation of the author to cease usage immediately. If so desired, another trial may be made at a later date with a lower dosage, but do not attempt to continue the drug cycle at that point.
i wouldnt touch it... 
