Combining agents acting at a281 sub unit of voltage-gated calcium channel.

More efficacious than either drug given alone for neuropathic pain.

Nortriptyline provides better pain relief than the corresponding single
drug therapy in patients suffering from PDN or PHN2.

Peripheral Neuropathy.

Trigeminal Neuralgia.

Post-Herpetic Neuralgia.

Lumbago.

Diabetic Neuropathy.