Hi and welcome to Neurotalk,

This is a great place full of very helpful and friendly people.

Unfortunatley I cant help you with your questions, but if you go to the fourm about PN,
http://neurotalk.psychcentral.com/forum20.html I'm sure you will find people who are willing to answer your questions,

or there is the Medication forum at http://neurotalk.psychcentral.com/forum72.html
as here in the welcome thread not everyone may see them.

Hope to see you around some more,
Take care
Kate