Or is an angry madman just like that and the drugs (maybe Prozac) have no effect whatsoever?
Answer:
Some can heighten your emotions, and of course anger is an emotion. For someone to become an "angry madman" (do you mean like a murderer?), chances are he's abusing the meds or combining it with any of the street drugs that cause aggression (e.g., PCP, Meth, alcohol).
I know I was on 75mg of Buproprion and ended up getting really mean. I don't know why. lol, I'm the least angry person you'll ever meet.