Isotrexin is a compound made from isotetrinoin (or something like that) and it is presented on the form of a topical gel. Isotetrinoin is the compound used to formulate that famous anti-acne medication, Roaccutane. However, in the case of Isotrexin, it is topical which means its less aggressive to the body (actually, there are no sides to it). I use it on a daily basis and keeps me acne-free. You might want to cycle it day on or day off if your skin gets dry (mine is quite oily).
Beware though: do not use isotrexin on the day before a sun-tan, for many ppl develope rashes from doing this.
Cheers and good luck!