Neuropathic Pain Medications, I Have Neuropathy Got It In 2005

Neuropathic Pain Medications, I have neuropathy got it in 2005 tried several meds, Lyrica with Cymbalta, ECT all made me fell very bad all most like I had been drinking unsteady, quit taking meds in 2009 been dealing with the pain but it is so bad now I am trying NORTRIPTYLINE 25mg 1 a day. two weeks now got that same feeling again like I been drinking, slurred speech, unsteady. what is the dosage you can take in 24 hr. PS I live next to Mexico I get my meds their.