20
Participants
Start Date
August 5, 2019
Primary Completion Date
November 11, 2022
Study Completion Date
November 11, 2022
Dextromethorphan/quinidine 20mg/10mg (DM/Q 20mg/10mg)
DM/Q 20mg/10mg one capsule once daily for 1 week, followed by DM/Q 20mg /10 mg twice daily for subsequent 4 weeks, and finally DM/Q 20mg/10mg once daily for 7days.
Placebo
Placebo once daily for 1 week, followed by placebo twice daily for subsequent 4 weeks, and finally placebo once daily for 7days.
The University of Texas Health Science Center at Houston, Houston
Cures Within Reach
OTHER
The University of Texas Health Science Center, Houston
OTHER