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A Two Week Double-Blind Placebo-Controlled Crossover Study To Compare The Efficacy And Safety Of A Pregabalin/PF-00489791 Combination Versus Pregabalin Alone In Patients With Post-Herpetic Neuralgia

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Trial Conditions
  • Postherpetic Neuralgia
What is the purpose of this trial?

Pregabalin is an alpha-2 delta ligand approved for the treatment of neuropathic pain, however, not all patients will respond to this drug. This study will compare the efficacy of pregabalin when administered with an experimental drug PF-00489791, in patients with post-herpetic neuralgia. The efficacy of this combination will be compared to pregabalin alone.

Date & Status


Who can Participate?


18 and older



Inclusion Criteria:

- Male or female of non-childbearing potential

- Pain present for more than 3 months after healing of herpes zoster skin rash

- VAS score of >=40mm at screening and baseline visits

Exclusion Criteria:

- Patients with pain conditions which might impair the assessment of postherpetic

- Skin conditions in the affected dermatome that could alter sensation other than
postherpetic neuralgia

- History or diagnosis of DSM IV major depressive disorder

Gender: Both
Steward Physician(s)
  • Pfizer Call Center
Trial Interventions
  • pregabalin
  • pregabalin/PF-00489791
  • Placebo
Physician Researcher

Investigator Name:

  • Pfizer Call Center

Other Information

Sponsor: Pfizer
Phase: Phase 2
Trial ID: NCT00599638
Volunteers:  Not Accepting Healthy Volunteers

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