i would go to the derm and find out if he can give u a script for accutane, or if this is ur first time getting an acne medicine then he'll probably start u off w/ something like retin-a (which worked great for about 2 yrs in my life) but i have heard good and bad things about proactiv, i used it myself and it didnt work for shit! and all my friends who had HARDCORE acne, it didnt work for them aswell, but like kman said it works for some and for others does nothing.

heres a little tip in getting accutane:
if this is a new doc or uve never had to visit him, then when he asks u what medicines u have tried? tell him EVERYTHING, benzomyicin, tetracyclin, retin-a, diferen gel, and those pills (forgot what theyre called)
just remember its a pain in the ass to get on this stufff! u have to get blood drawn once a month, go to the doc once a month, then when ever u have a side affect ( iE:dry skin that leaves spots) u have to go back so just keep that in mind.