126
Participants
Start Date
February 13, 2019
Primary Completion Date
March 1, 2019
Study Completion Date
March 30, 2019
Naloxone
Naloxone at an sublingual dose of 0.4 mg daily for one week will be given to each subject. Subjects will self-administer the drug at supervision in the primary care center.
Placebo
Placebo will be given to each subject for one week. Subjects will self-administer the drug at supervision in the primary care center.
Xiangya Hospital, Changsha
Xiangya Hospital of Central South University
OTHER