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CompletedNCT00429832Updated Feb 1, 2007

A RCT of Ondansetron and Promethazine in the Treatment of Nausea and Vomiting in the Emergency Department

A Phase 4 interventional study of Ondansetron and promethazine in Nausea and Vomiting, sponsored by University of New Mexico. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2007-02-01.

Sponsored by University of New Mexico · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This was a trial comparing two commonly used medications for nausea and vomiting, ondansetron and promethazine, in the Emergency Department.

Read the detailed description

Nausea and vomiting are common complaints in the emergency department (ED). There are many pharmacologic agents used for the treatment of these complaints. None are new nor experimental. Very little research has been done in the ED setting to determine which of these agents is most effective with the least adverse effects. Our own previous research found that droperidol but not prochlorperazine and metoclopramide is more effective than placebo. Because of the recent FDA black box warning added to droperidol, the use of this agent has suddenly ceased in many EDs. Promethazine remains a very commonly used antiemetic in many EDs but one recent study found it less effective than prochlorperazine which was in turn found no more effective than placebo in our own study. As a result many physicians have turned to ondansetron, a newer and more expensive agent. Experience among anesthesiologists and oncologists has shown ondansetron to be highly effective with a minimum of adverse effects. These patient populations, however, are very different from those found in the ED. It is our hypothesis that promethazine and ondansetron are equally effective for the ED treatment of unselected patients with nausea and vomiting with similar rates of adverse effects.

02

Conditions studied

  • Nausea
  • Vomiting

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Keywords

  • Nausea, vomiting, antiemetic
03

In context

Nausea

822 studies on the registry are indexed under Nausea; 104 are open to participants now.

This study's enrollment of 120 is close to the median of 115 across 703 interventional studies indexed under Nausea.

Browse Nausea studies →

Lead sponsor

University of New Mexico is the lead sponsor of 306 studies on the registry; 28 are open to participants now.

Of its 25 completed or terminated interventional studies of FDA-regulated products, 23 (92%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 or older
  • Chief complaint of nausea or vomiting

Exclusion criteria

Exclusion Criteria:

  • Age less than 18
  • unable to provide informed consent
  • rate nausea at \< 40 mm on 100 mm VAS
  • received antiemetic within 24 hours
  • pregnant or possibly pregnant
  • reported allergy to either study medication
  • received more than 1 liter of intravenous fluids
  • their primary ED physician declined to have patient participate
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double
Enrollment
120 participants

Interventions

  • DrugOndansetron
  • Drugpromethazine
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What researchers measure

Primary outcomes

  1. Reduction in nausea on a VAS.

Secondary outcomes

  1. Change in sedation on a VAS

  2. Change in anxiety on a VAS

  3. Need for rescue medication at 30 minutes

  4. Patient satisfaction at follow-up

07

Study locations

1 site
  • University of New Mexico Hospital Emergency Department
    Albuquerque, New Mexico 87131, United States
08

References and documents

Publications

  • Braude D, Crandall C. Ondansetron versus promethazine to treat acute undifferentiated nausea in the emergency department: a randomized, double-blind, noninferiority trial. Acad Emerg Med. 2008 Mar;15(3):209-15. doi: 10.1111/j.1553-2712.2008.00060.x. PubMed 18304050 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 1, 2007, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00429832
Lead sponsor
University of New Mexico
Collaborators
GlaxoSmithKline
First posted
Feb 1, 2007
Start date
Oct 2003
Completion
Nov 2005
Last update
Feb 1, 2007

Study contacts

Darren A Braude, MD, MPH
principal investigator · University of New Mexico
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2007. You cannot join it, but the record below documents what was studied.

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