The purpose of this study is to measure the effects of a drug called nalbuphine (an opioid drug) compared with the effects of hydromorphone (an opioid drug) and placebo (contains no active drug ingredients). The amount of nalbuphine levels in the blood will also be measured and the safety of the study drugs will be evaluated. This study has 2 parts: Part A and Part B.
Age range
18 Years – 55 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
To Identify the Appropriate Low, Intermediarte, and High Doses of Nalbuphine Solution (Part A) to be Administered as Single Doses in the Treatment Phase of the Main Study (Part B).
Timeframe: 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, and 24 hours post-dose