Has anyone had it for PN or SFN for that matter? There was a thread from a while back on here that I tracked down and the fellow from NY has seen regrowth of fibers in SFN (I think). He seems to have disappeared a few years back. I'm on no RX meds and don't intend to be as long as I can avoid it, but this is something I'd consider, since it seems to not treat the symptoms but the problem itself, and to heal not mask.