Study to Evaluate the Safety and Analgesic Activity of ATx08-001 in Subjects With Postherpetic Neuralgia

ATx08-001 will be administered as a 6mm white film coated tablet of 2.5 mg strength, to be taken orally at a dose of 2.5 mg or 7.5 mg, twice a day approximately every 12 hours over an 8 day period.

Placebo will be administered as a 6mm white film coated tablet, twice a day approximately every 12 hours over an 8 day period. Placebo is identical in appearance to the ATx 08-001 tablet.