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Pilot Study of Lofexidine and Methadone Pharmacodynamic Interaction in Methadone Maintained Patients

NCT01558934 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 6

Last updated 2018-02-23

No results posted yet for this study

Summary

The primary objective of this study is to assess QTc (an interval of the heart rhythm) interaction effects between lofexidine and methadone. The secondary objectives of the study are to evaluate the safety and tolerability of lofexidine by evaluating and monitoring pharmacokinetics (amounts of drug in the blood), vital signs (heart rate and blood pressure) and adverse events (side effects) when co-administered with methadone; and to describe effects on opiate withdrawal when lofexidine is introduced following a 50% or 100% methadone dose reduction, as required to elicit a withdrawal response. The investigators hypothesize that while both agents are known to prolong the QTc interval, the combination of the drugs will not create an additive effect which creates a significant safety concern. The investigators further hypothesize that subjects will be able to tolerate the therapeutic dose of lofexidine (0.8 mg four times daily) when the methadone maintenance dose is lowered to elicit withdrawal.

Conditions

  • Opioid Dependence
  • Methadone Withdrawal Syndrome

Interventions

DRUG

Lofexidine HCl

Lofexidine HCl 0.2 mg tablets titrated in ascending doses of 0.2 mg QID (e.g. Day 1 0.2 mg QID, Day 2 0.4 QID, etc)as described in the treatment arm.

Sponsors & Collaborators

  • National Institute on Drug Abuse (NIDA)

    collaborator NIH

  • USWM, LLC (dba US WorldMeds)

    lead INDUSTRY

Principal Investigators

  • Charles W Gorodetzky, MD, PhD · US WorldMeds

  • James A Longstreth, PhD · US WorldMeds

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-02-29
Primary Completion
2012-04-30
Completion
2012-04-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01558934 on ClinicalTrials.gov