Healthy Participants Clinical Trial
Official title:
A Phase I, Open-Label, Single-Sequence Drug-Drug Interaction Trial in Subjects on Stable Methadone Maintenance Therapy, to Investigate the Potential Interaction Between Telaprevir 750 mg q8h and Methadone, at Steady-State
The purpose of this study is to evaluate the effect of steady-state (constant concentration of medication in the blood) telaprevir 750 mg every 8 hours on the steady-state pharmacokinetics (how the drug concentrations change over time) of R- and S-methadone.
This is a Phase 1, open-label (all people know the identity of the intervention), single-sequence study to evaluate the potential interaction of steady-state telaprevir on the steady-state pharmacokinetics of methadone. The study consists of 3 phases: the screening phase (within 21 days prior to the start of supervised methadone intake on Day -14), treatment phase, and follow-up phase. Participants on stable methadone maintenance therapy will be enrolled in this study and their methadone doses will not be changed starting at Day -14. During the treatment phase, telaprevir will be added for 7 days (from Day 1 to Day 7) to participants' current methadone therapy. The methadone dosage will not to be changed from Day -14 until Day 7. All the intakes of methadone and telaprevir will be supervised and pharmacokinetic parameters will be measured during the study. Safety evaluations for adverse events, clinical laboratory tests, alcohol breath test, cardiovascular safety, and other evaluations (physical examination, and pharmacodynamic assessments) will be performed throughout the study. The total duration of the study for each participant is approximately 60 days. ;
Endpoint Classification: Pharmacokinetics/Dynamics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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