A Phase Ⅱ Study to Evaluate the Efficacy and Safety of YZJ-4729 in Patients With Moderate to Severe Acute Pain After Abdominal Surgery
ACTIVE_NOT_RECRUITING
Status
Conditions
Interventions
- DRUG: YZJ-4729
- DRUG: morphine
- DRUG: placebo
- DRUG: YZJ-4729
- DRUG: YZJ-4729
- DRUG: YZJ-4729
Sponsor
Shanghai Haiyan Pharmaceutical Technology Co., Ltd.