TRK-700 Drug-Drug Interaction Study With Digoxin and Midazolam in Healthy Adults
This study comprises 2 cohorts, and in each cohort, the study will be conducted as an open-label add-on study. The purpose of the study is to investigate the pharmacokinetics of each substrate in concomitant administration of a single dose of the P-glycoprotein substrate digoxin (Cohort A) or the CYP3A4 substrate midazolam (Cohort B) during repeated administration of TRK-700 in healthy adult males.
TRK-700 An Early Phase II Study in Patients With Post-Herpetic Neuralgia -Double Blind Comparison With Placebo-
In Post-Herpetic Neuralgia(PHN) patients: To conduct an explorative investigation of the efficacy and safety of repeated oral doses of TRK-700 via a randomized double blind comparative study To measure the plasma concentration of TRK-700 and its metabolites