The study is being conducted to evaluate the safety and pharmacokinetics of HR071603 (ketamine nasal spray) in healthy subjects.
Randomized, parallel-group Phase I study in healthy male volunteers (n=50) comparing HR071603 (R-ketamine) nasal spray versus placebo with dose-escalation cohorts to evaluate safety and pharmacokinetics.
Primary assessments include adverse events, vital signs, ECG and clinical labs; pharmacokinetic sampling will characterise systemic exposure across dose cohorts.
HR071603 nasal spray; dose escalation per cohort.
Nasal spray; R-ketamine (HR071603); dose escalation across cohorts.
Placebo nasal spray
Placebo nasal spray comparator.