The sides can be extremely uncomfortable, depending on how you react. You are not going to feel good on DNP. It will significantly raise your body temp. Imagine having a constant fever. I would start off @ one cap until you know how your body is going to tolerate the drug. Some people need high doses to respond, while others need very little. Be very careful with this stuff. If you over do it, it can kill you.
BTW. . . as to how much fat will you lose. Up to 1/2 lb. per day.