Safety, Tolerability and Pharmacokinetics of Single Ascending Doses of REL-1017 (d-Methadone)

The investigational product, REL-1017 is prepared as a solution with Ocean Spray® Diet Cranberry Juice on site to obtain a final volume of 100 mL for dosing. The study drug will be administered as a solution of 5 mg, 20 mg, 60 mg, 100 mg, 150 mg or 200 mg REL-1017, based on randomization prepared in Ocean Spray® Diet Cranberry Juice with a final volume of 100 mL