The goal of this clinical trial is to learn if LPI-1503 (Ondansetron Inhalation Powder) can deliver ondansetron into blood through inhalation. It will also learn about the safety of LPI-1503. The main questions it aims to answer are: Does ondansetron enter into blood after inhalation of LPI-1503? And if it does, how efficiently? how rapidly? What medical problems do participants have when and after inhaling LPI-1503? Researchers will compare LPI-1503 to a placebo (a look-alike substance that contains no drug), and to orally swallowed and injected administrated ondansetron. Participants will: Visit site and take LPI-1503 or a placebo once by inhalation, followed by checkups and tests; and (if took LPI-1503 in visit 1) After one week, visit site again to take ondansetron by orally swallowing or by injection, followed by checkups and tests.
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.
Number of Participants with Treatment-Emergent Adverse Events
Timeframe: pre-dose to 48 hours post-dose or to end of all AEs (if any), whichever is later.
Number of Participants with Serious Adverse Events.
Timeframe: pre-dose to 48 hours post-dose or to end of all AEs (if any), whichever is later.
Number of Participants with Treatment-Related Adverse Events
Timeframe: pre-dose to 48 hours post-dose or to end of all AEs (if any), whichever is later.
Cmax
Timeframe: pre-dose to 48 hours post-dose
Tmax
Timeframe: pre-dose to 48 hours post-dose
AUC(0-t)
Timeframe: pre-dose to 48 hours post-dose
AUC(0-inf)
Timeframe: pre-dose to 48 hours post-dose
t(1/2)
Timeframe: pre-dose to 48 hours post-dose
CL/F
Timeframe: pre-dose to 48 hours post-dose
Vd/F
Timeframe: pre-dose to 48 hours post-dose
CL
Timeframe: pre-dose to 48 hours post-dose
Vd
Timeframe: pre-dose to 48 hours post-dose
Absolute Bioavailability (F)
Timeframe: pre-dose to 48 hours post-dose
Relative Bioavailability (F rel)
Timeframe: pre-dose to 48 hours post-dose