GPT and Thrombocytopenia: Two subjects were prematurely discontinued from the study: one male subject withdrew due to pyrexia/febrile illness on period 2, day 3 (CBZ alone), and one female subject withdrew due to drug-induced hypersensitivity syndrome, increased alanine aminotransferase (ALT) level, thrombocytopenia, and maculopapular rash in period 2, day 11 (CBZ alone).