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Showing 25–42 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Hydroxyzine HCL Clear all
Completed Phase 1Phase 2 Interventional Results available

E7 TCR T Cells for Human Papillomavirus-Associated Cancers

NCT02858310
View directory record Official record
Conditions
Papillomavirus Infections, Cervical Intraepithelial Neoplasia, Carcinoma In Situ, Vulvar Neoplasms, Vulvar Diseases
Interventions
E7 TCR cells, Aldesleukin, Fludarabine, Cyclophosphamide, EKG, Biopsy, Chest CT and MRI or PET, PFT, Granisetron, Ondansetron, Droperidol, Prochlorperazine, Diphenoxylate HCL, Atropine sulfate, Codeine sulfate, Loperamide, Indomethacin, Acetaminophen, Diphenhydramine HCL, Hydroxyzine HCL, Meperidine
Biological · Drug · Diagnostic Test + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 120 Years
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
2
States / cities
Bethesda, Maryland • New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 23, 2026, 9:51 PM EDT
Not yet recruiting Phase 2 Interventional

Investigating Pre-Procedural Anxiety and Effect of Analgesia on Intrauterine Device Placement and Endometrial Biopsy

NCT07031206
View directory record Official record
Conditions
Anxiety, Pain
Interventions
Paracervical block- Lidocaine without epinephrine, Benzocaine Gel applied to the cervix, Hydroxyzine Hydrochloride
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older · Female only
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 23, 2026, 9:51 PM EDT
Withdrawn Phase 3 Interventional

Antihistamines in the Treatment of Irritable Bowel Syndrome With Diarrhea

NCT04612803
View directory record Official record
Conditions
Irritable Bowel Syndrome, Dermatographism, Post-prandial Diarrhea
Interventions
Antihistamine, Placebo
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 23, 2026, 9:51 PM EDT
Terminated Phase 3 Interventional Results available

Long-Term Extension Study of Ofatumumab in Subjects With Pemphigus Vulgaris

NCT02613910
View directory record Official record
Conditions
Pemphigus
Interventions
Ofatumumab, Acetaminophen/paracetamol, Antihistamine (cetirizine or equivalent), Prednisone/Prednisolone
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
Los Angeles, California • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparing Pediatric Dental Oral Sedation Outcomes With and Without Meperidine in Children Aged 3-7 Years

NCT04068948
View directory record Official record
Conditions
Dental Caries in Children, Pediatric Dental Sedation, Meperidine, Hydroxyzine, Midazolam
Interventions
Meperidine, Hydroxyzine, Midazolam
Drug
Lead sponsor
University of Washington
Other
Eligibility
3 Years to 7 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 23, 2024 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of an H1 Receptor Antagonist on Exercise Performance in Hypoxia

NCT03192488
View directory record Official record
Conditions
Hypoxia, Altitude
Interventions
Cetirizine, Placebo oral capsule, Hypoxia
Drug · Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 35 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Results available

A Prospective Study to Investigate Safety and Tolerability of Shorter Infusion of Fabrazyme

NCT06019728
View directory record Official record
Conditions
Fabry's Disease
Interventions
AGALSIDASE BETA (GZ419828), Acetaminophen, Diphenhydramine, Dexamethasone, Montelukast, Loratadine, Cetirizine, Fexofenadine
Drug
Lead sponsor
Sanofi
Industry
Eligibility
2 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
5
States / cities
Santa Monica, California • Atlanta, Georgia • Grand Rapids, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 3 Interventional Results available

A Multi-Center, Vehicle-Controlled, Parallel-Group Study Evaluating the Safety of AC-170 Ophthalmic Solution

NCT02756624
View directory record Official record
Conditions
Healthy Subjects
Interventions
AC-170 0.24%, AC-170 Vehicle
Drug
Lead sponsor
Nicox Ophthalmics, Inc.
Industry
Eligibility
2 Years and older
Enrollment
516 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 10, 2017 · Synced Sep 23, 2026, 9:51 PM EDT
Terminated Phase 4 Interventional Results available

Study of Using Long Acting Antihistamine to Treat Opioid Induced Itching

NCT01825655
View directory record Official record
Conditions
Pruritus
Interventions
Cetirizine, Placebo or sugar pill
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
6 Years to 18 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 9, 2018 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Relative Bioavailability Study of Cetirizine HCl 10 mg Tablets Under Non-fasting Conditions

NCT00863902
View directory record Official record
Conditions
Healthy
Interventions
Cetirizine Hydrochloride 10 mg tablets, single dose, Zyrtec® 10 mg tablets, single dose
Drug
Lead sponsor
Actavis Inc.
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Morrisville, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2010 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 2Phase 3 Interventional

Prometa Pharmacotherapy for Methamphetamine Dependence

NCT00260481
View directory record Official record
Conditions
Drug Abuse, Drug Dependence
Interventions
Prometa, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 21, 2016 · Synced Sep 23, 2026, 9:51 PM EDT
Recruiting Phase 4 Interventional

CLOZAPINE Response in Biotype-1

NCT04580134
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar 1 Disorder
Interventions
clozapine, risperidone
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
524 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
5
States / cities
Hartford, Connecticut • Athens, Georgia • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalence Study of Cetirizine Hydrochloride 10mg Tablets Under Fasting Conditions

NCT00776139
View directory record Official record
Conditions
Healthy
Interventions
Cetirizine Hydrochloride 10 mg tablet
Drug
Lead sponsor
Ranbaxy Laboratories Limited
Industry
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 19, 2008 · Synced Sep 23, 2026, 9:51 PM EDT
Withdrawn Phase 4 Interventional

Cetirizine and Famotidine for COVID-19

NCT04836806
View directory record Official record
Conditions
Covid19
Interventions
Cetirizine and Famotidine, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 19, 2021 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Relative Bioavailability Study of Cetirizine HCl 10 mg Tablets Under Fasting Conditions

NCT00864279
View directory record Official record
Conditions
Healthy
Interventions
Cetirizine Hydrochloride 10 mg tablets, single dose, Zyrtec® 10 mg tablets, single dose
Drug
Lead sponsor
Actavis Inc.
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Morrisville, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2010 · Synced Sep 23, 2026, 9:51 PM EDT
Not listed Not applicable Interventional

Neurocognitive Functioning Following The PROMETA® Treatment Protocol In Subjects With Alcohol Dependence

NCT00570388
View directory record Official record
Conditions
Alcohol Dependence
Interventions
Prometa Treatment Program
Drug
Lead sponsor
Institute of Addiction Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 15, 2008 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment

NCT04188106
View directory record Official record
Conditions
Smoking Cessation, Stress, Sleep Disturbance, Nausea
Interventions
Varenicline Pill, Hydroxyzine Pill
Drug
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
19 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 23, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Results available

Is Levocetirizine Less Sedating Than Cetirizine?

NCT00826943
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Cetirizine, Levocetirizine, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 77 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 19, 2014 · Synced Sep 23, 2026, 9:51 PM EDT