Effectiveness of Lofexidine to Prevent Stress-Related Opiate Relapse During Naltrexone Treatment - 1

Participants will receive lofexidine. The dosing will be initiation at 0.4 mg bid and increased to 0.8mg in week 1 and 1.0 and 1.2 mg bid in week 2, and maintained at 1.2mg bid for weeks 3 to 12. They are then tapered down to 0 over the course of four days in week 12. While the target dose will be 2.4 mg daily, if any subject shows reduced tolerability at this or a lower dose, the dose will be adjusted to the maximum tolerated dose for that subject.

Lofexidine Placebo