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Haloperidol, Droperidol, Ondansetron in Cannabis Hyperemesis

A Comparison of Haloperidol 5mg IM vs Droperidol 2.5mg and Ondansetron for the Treatment of Hyperemesis in Cannabis Hyperemesis Syndrome

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05065567
Enrollment
32
Registered
2021-10-04
Start date
2021-08-30
Completion date
2023-11-20
Last updated
2025-05-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cyclic Vomiting Syndrome

Brief summary

The purpose of this study is to compare two commonly used agents for the treatment of cyclic vomiting to see if one agent is inferior to the other in time to improvement in symptoms, need for repeat or rescue medications, treatment failures and complications/side effects.

Interventions

Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to 2.5mg droperidol IV

DRUGHaloperidol

Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to 5mg haloperidol IM

Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to ondansetron

Sponsors

Corewell Health South
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* adult patients with clinical diagnosis of cyclic vomiting in the ED

Exclusion criteria

* pregnancy, allergy to any of the study medicines

Design outcomes

Primary

MeasureTime frameDescription
Abdominal Pain2 hourschange in abdominal pain on 0 (no pain) through 10 (worse possible pain) on a visual analog scale
Nausea2 hourschange in nausea on 0 (none) through 10 (worse possible nausea) on a scale

Secondary

MeasureTime frameDescription
Treatment Success2 hoursboth abdominal pain and nausea scores under 2 (none or minimal)

Countries

United States

Participant flow

Participants by arm

ArmCount
Haloperidol
these patients will receive 5mg IM haloperidol Haloperidol: Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to 5mg haloperidol IM
11
Droperidol
these patients will receive 2.5mg IV droperidol Droperidol: Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to 2.5mg droperidol IV
14
Ondansetron
these patients will receive 8mg IV ondansetron Ondansetron 8mg: Patients with suspected cannabis hyperemesis syndrome and enrolled in the study will be randomized based on the week to ondansetron
7
Total32

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyLost to Follow-up1096

Baseline characteristics

CharacteristicHaloperidolDroperidolOndansetronTotal
Age, Continuous32.45 years
STANDARD_DEVIATION 8.56
29.93 years
STANDARD_DEVIATION 9.52
27.57 years
STANDARD_DEVIATION 9.52
30.28 years
STANDARD_DEVIATION 10.29
Nausea_Before_Medication3.4 units on a scale: 0 through 10
STANDARD_DEVIATION 3.37
3.69 units on a scale: 0 through 10
STANDARD_DEVIATION 2.5
5.00 units on a scale: 0 through 10
STANDARD_DEVIATION 4.1
3.86 units on a scale: 0 through 10
STANDARD_DEVIATION 3.11
Pain_Before_Medication4.00 units on a scale: 0 through 10
STANDARD_DEVIATION 3.3
3.38 units on a scale: 0 through 10
STANDARD_DEVIATION 3.04
4.80 units on a scale: 0 through 10
STANDARD_DEVIATION 3.7
3.86 units on a scale: 0 through 10
STANDARD_DEVIATION 3.17
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
5 Participants7 Participants3 Participants15 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants0 Participants2 Participants
Race (NIH/OMB)
White
5 Participants6 Participants4 Participants15 Participants
Region of Enrollment
United States
11 participants14 participants7 participants32 participants
Sex: Female, Male
Female
2 Participants9 Participants5 Participants16 Participants
Sex: Female, Male
Male
9 Participants5 Participants2 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 110 / 140 / 7
other
Total, other adverse events
0 / 110 / 140 / 7
serious
Total, serious adverse events
0 / 110 / 140 / 7

Outcome results

Primary

Abdominal Pain

change in abdominal pain on 0 (no pain) through 10 (worse possible pain) on a visual analog scale

Time frame: 24 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolAbdominal Pain5 score on a scale
DroperidolAbdominal Pain2.6 score on a scaleStandard Deviation 3.71
OndansetronAbdominal Pain3 score on a scale
Primary

Abdominal Pain

change in abdominal pain on 0 (no pain) through 10 (worse possible pain) on a visual analog scale

Time frame: 2 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolAbdominal Pain4.00 score on a scaleStandard Deviation 3.3
DroperidolAbdominal Pain3.38 score on a scaleStandard Deviation 3.04
OndansetronAbdominal Pain4.8 score on a scaleStandard Deviation 3.7
Primary

Abdominal Pain

change in abdominal pain on 0 (no pain) through 10 (worse possible pain) on a visual analog scale

Time frame: 48 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolAbdominal Pain0 score on a scale
DroperidolAbdominal Pain3.69 score on a scaleStandard Deviation 4.1
OndansetronAbdominal Pain2 score on a scale
Primary

Nausea

change in nausea on 0 (none) through 10 (worse possible nausea) on a scale

Time frame: 24 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolNausea3.0 score on a scale
DroperidolNausea3.0 score on a scaleStandard Deviation 3.67
OndansetronNausea7.0 score on a scale
Primary

Nausea

change in nausea on 0 (none) through 10 (worse possible nausea) on a scale

Time frame: 2 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolNausea3.40 score on a scaleStandard Deviation 3.37
DroperidolNausea3.69 score on a scaleStandard Deviation 2.5
OndansetronNausea5 score on a scaleStandard Deviation 4.1
Primary

Nausea

change in nausea on 0 (none) through 10 (worse possible nausea) on a scale

Time frame: 48 hours

ArmMeasureValue (MEAN)Dispersion
HaloperidolNausea0.5 score on a scale
DroperidolNausea3.2 score on a scaleStandard Deviation 3.42
OndansetronNausea1 score on a scale
Secondary

Treatment Success

both abdominal pain and nausea scores under 2 (none or minimal)

Time frame: 48 hours

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
HaloperidolTreatment Success1 Participants
DroperidolTreatment Success2 Participants
OndansetronTreatment Success1 Participants
Secondary

Treatment Success

both abdominal pain and nausea scores under 2 (none or minimal)

Time frame: 24 hours

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
HaloperidolTreatment Success0 Participants
DroperidolTreatment Success3 Participants
OndansetronTreatment Success0 Participants
Secondary

Treatment Success

both abdominal pain and nausea scores under 2 (none or minimal)

Time frame: 2 hours

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
HaloperidolTreatment Success2 Participants
DroperidolTreatment Success3 Participants
OndansetronTreatment Success1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026