Safety and Efficacy of Pregabalin in Patients With Diabetic Peripheral Neuropathy.

An Open-Label, Extension Safety and Efficacy Study of Pregabalin in Patients With Painful Diabetic Peripheral Neuropathy.

To evaluate long-term efficacy and safety of pregabalin in patients with diabetic peripheral neuropathy.

Inclusion Criteria:

• Must have met the inclusion criteria for preceding double-blind study
• Must have received pregabalin or amitriptyline or placebo under double-blind conditions under double-blind conditions at least during first 3 weeks if double-blind treatment phase of preceding study.

Exclusion Criteria:

• Patients cannot be included if they experienced a serious adverse event while participating in preceding double-blind study, which was determined to be related to the study medication.