Stabilize your metabolism? Does that mean loosing weight? I am on an Amphetamine and, paradoxically, it doesn't make my sweating any worse than it was in the past.
In fact, when I first started taking it, I was sweating significantly less. I think part of the reason early on was that, as a first time amp user, I was experiencing the euphoria/confidence/I don't give a damn attitude that lasts for a short while, making me less anxious about sweating and, in turn, decreasing the sweat. Amps also affect your vasodilation, which plays a role in sweating, at least insofar as clammy hands go. Those went away for me for a while too.
These feelings are largely gone now, and I am pretty much back to my normal sweating routine (that is - I don't sweat anymore while taking amphetamines)