Opioid-use Disorder Clinical Trial
Official title:
Impact of Lofexidine on Stress, Craving and Opioid Use
Individuals with opioid use disorder who are stabilized on buprenorphine or methadone will be randomly assigned to receive placebo or lofexidine for 5 weeks. At the end of five weeks, they will complete a human laboratory stress task and scripted opioid imagery task. Throughout the study a CREMA app (Cue Reactivity Ecological Momentary Assessment) will be used to monitor stress, craving and use in the natural environment.
Participants will complete a screening visit to determine study eligibility. During the first week, participants will be asked to abstain from opioid use other than buprenorphine. Participants will come to the clinic 2 times that week for urine drug testing. If all 2 tests are negative, participants will be randomly assigned to take either lofexidine or placebo (inactive medication) two to three times a day for 5 weeks. During this time, participants will upload videos of themselves taking their medication. They will come to the clinic 3 times a week for urine drug screens and to have their vital signs measured. They will also participate in "CREMA" sessions (Cue Reactivity Ecologic Momentary Assessment) 3 times a day. These sessions include looking at stressful and neutral pictures and rating stress and craving. At the end of five weeks, participants will return to the clinic and participate in a stress task and a scripted opioid imagery task the following day. For the next five days, participants will taper their medication dose. During this time they will continue to come to clinic to have their vital signs measured and complete a follow-up visit. ;
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