# A Clinical Trial Evaluating the Efficacy and Safety of HSK21542 in Patients for Postoperative Pain Treatment

> **NCT05390905** · PHASE3 · COMPLETED · sponsor: **Haisco Pharmaceutical Group Co., Ltd.** · enrollment: 387 (actual)

## Conditions studied

- Postoperative Analgesia

## Interventions

- **DRUG:** HSK21542 Injection
- **DRUG:** Tramadol hydrochloride
- **DRUG:** placebo

## Key facts

- **NCT ID:** NCT05390905
- **Lead sponsor:** Haisco Pharmaceutical Group Co., Ltd.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2022-06-08
- **Primary completion:** 2022-12-16
- **Final completion:** 2023-03-28
- **Target enrollment:** 387 (ACTUAL)
- **Last updated:** 2023-04-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05390905

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05390905, "A Clinical Trial Evaluating the Efficacy and Safety of HSK21542 in Patients for Postoperative Pain Treatment". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT05390905. Licensed CC0.

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