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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:36 PM EDT

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Showing 1–24 of 102 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: histamine Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Hallucinogens and Other Drugs on Mood and Performance

NCT02033707
View directory record Official record
Conditions
Healthy
Interventions
Hallucinogens and psychoactive substances
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 16, 2019 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Evaluation of the Allergenicity of AMPHADASE INJECTION (Hyaluronidase Injection USP)

NCT01689363
View directory record Official record
Conditions
Allergic Skin Reaction
Interventions
Hyaluronidase, Histamine, Saline
Drug
Lead sponsor
Amphastar Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
253 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
5
States / cities
Eugene, Oregon • Lake Oswego, Oregon • Portland, Oregon + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2017 · Synced Oct 20, 2026, 5:36 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study to Evaluate the Efficacy, Safety and Pharmacokinetics (PK) of a Higher Dose of Ocrelizumab in Adults With Relapsing Multiple Sclerosis (RMS)

NCT04544436
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Ocrelizumab, Antihistamine, Methylprednisolone
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 55 Years
Enrollment
864 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
25
States / cities
Cullman, Alabama • Homewood, Alabama • Phoenix, Arizona + 22 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 1Phase 2 Interventional Results available

M7824 and Topotecan or Temozolomide in Relapsed Small Cell Lung Cancers

NCT03554473
View directory record Official record
Conditions
Carcinoma, Small Cell, Lung Cancer, Small Cell Lung Cancer
Interventions
M7824, Topotecan, Temozolomide, EKG, CT scan, PET scan, Acetaminophen, Antihistamines, Diphenhydramine, Dexamethasone, Epinephrine
Drug · Diagnostic Test
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 3 Interventional

A Histamine Pharmacodynamic Biomarker to Guide Treatment in Pediatric Asthma (HAS3)

NCT04699604
View directory record Official record
Conditions
Allergic Asthma
Interventions
Levocetirizine Dihydrochloride, Placebo
Drug
Lead sponsor
Bridgette Jones
Other
Eligibility
6 Years to 17 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate Safety, and Efficacy of SUVN-G3031 (Samelisant) in Patients With Narcolepsy With and Without Cataplexy

NCT04072380
View directory record Official record
Conditions
Narcolepsy
Interventions
SUVN-G3031, Placebo
Drug
Lead sponsor
Suven Life Sciences Limited
Industry
Eligibility
18 Years to 65 Years
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
39
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 30 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Not applicable Interventional Results available

Olopatadine Eye Drops and Allergy Skin Testing

NCT00775658
View directory record Official record
Conditions
Allergic Rhinitis, Allergic Conjunctivitis
Interventions
olopatadine, placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 2 Interventional

Omalizumab (Xolair) and Allergy Shots For the Treatment of Seasonal Allergies

NCT00078195
View directory record Official record
Conditions
Hay Fever, Hypersensitivity, Allergy, Rhinitis
Interventions
omalizumab, Placebo omalizumab, Ragweed rush immunotherapy (RIT), Placebo rush immunotherapy (RIT), Ragweed immunotherapy (IT), Placebo immunotherapy (IT)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
3
States / cities
Iowa City, Iowa • Omaha, Nebraska • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Head-to-Head Comparison Study Between Different FDA Registered Allergy Skin Test Applicators

NCT07400718
View directory record Official record
Conditions
Allergy, Hypersensitivity, Immediate, Ig-E Mediated Food
Interventions
AllerTest-10 Multi-Head Skin Test Device, Skintestor OMNI Multi-Head Skin Test Device, Multi-Test II Multi-Head Skin Test Device, AllerTest-8 Multi-Head Skin Test Device
Device
Lead sponsor
QHSLab, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Terminated Phase 1 Interventional Results available

Intratumor Injection of Anti-Mesothelin Immunotoxin LMB-100 With Ipilimumab in Malignant Mesothelioma

NCT04840615
View directory record Official record
Conditions
Mesothelioma
Interventions
LMB-100, ipilimumab, Diphenhydramine, Famotidine, Acetaminophen, Dexamethasone, Biopsy, FDG-PET, CT CAP, MRI, ECG, Echocardiogram
Biological · Drug · Procedure + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 120 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2024 · Synced Oct 20, 2026, 5:36 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Randomized Phase II Trial of Rituximab With Either Pentostatin or Bendamustine for Multiply Relapsed or Refractory Hairy Cell Leukemia

NCT01059786
View directory record Official record
Conditions
Hairy Cell Leukemia
Interventions
Pentostatin, Rituximab, Bendamustine, Acetaminophen, Diphenhydramine, Epinephrine, Antihistamines, Corticosteroids, Bronchodilators, Intravenous (IV) Saline
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2031
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 3 Interventional

Acute Otitis Media: Adjuvant Therapy to Improve Outcome

NCT00000363
View directory record Official record
Conditions
Otitis Media
Interventions
Antihistamine, Corticosteroid
Drug
Lead sponsor
National Institute on Deafness and Other Communication Disorders (NIDCD)
NIH
Eligibility
2 Months to 1 Year
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2001
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 24, 2006 · Synced Oct 20, 2026, 5:36 PM EDT
Recruiting Phase 1 Interventional

A Phase 1, First-in-human Study of OKN4395 and Pembrolizumab in Patients With Solid Tumors

NCT06789172
View directory record Official record
Conditions
Solid Tumours, Sarcoma, HNSCC, Non Small Cell Lung Cancer, NSCLC, Colorectal Cancer (CRC), Myxofibrosarcoma (MFS), Solitary Fibrous Tumors, Dedifferentiated Liposarcoma, Undifferentiated Pleomorphic Sarcoma (UPS), Leiomyosarcoma, Leiomyosarcoma (LMS), Gastric Cancer (GC), Gastric Cancer Adenocarcinoma Metastatic, Gastric / Gastroesophageal Junction Adenocarcinoma
Interventions
OKN4395, Pembrolizumab, Fasting, Fed, H2 Receptor Antagonist
Drug · Combination Product · Other
Lead sponsor
Epkin
Industry
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
3
States / cities
Beverly Hills, California • Santa Monica, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Allergy Potential of Omeza Collagen Matrix in Human Subjects Using the Skin Prick Method

NCT04510376
View directory record Official record
Conditions
Allergic Reaction
Interventions
Test Article, Positive Control, Negative Control
Device · Other
Lead sponsor
Omeza, LLC
Industry
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Aug 12, 2020 · Synced Oct 20, 2026, 5:36 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Radicle GI Health™ RFY: A Study Assessing the Impact of DAO Supplementation on Gastrointestinal and Other Histamine Intolerance Symptoms

NCT07835776
View directory record Official record
Conditions
GI Health
Interventions
Active GI Health Product 1, Placebo GI Health Control
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Del Mar, California
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Comparison of Scalp Blood Flow and Hair Shaft In Premenopausal Women Versus Postmenopausal Women

NCT01831180
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Wake Forest University
Other
Eligibility
19 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 6, 2018 · Synced Oct 20, 2026, 5:36 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 4, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effects of Antihistamines on Pre-Pulse Inhibition

NCT01537471
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Meclizine
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Oct 20, 2026, 5:36 PM EDT
Recruiting Phase 2 Interventional

Desloratadine to Prevent Taxane-induced Peripheral Neuropathy in Patients With Breast Cancer

NCT07109817
View directory record Official record
Conditions
Breast Cancer, Peripheral Neuropathy
Interventions
Desloratodine, Placebo
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Safety, Tolerability and Pharmacokinetics of SUVN-G3031 in Healthy Subjects

NCT02342041
View directory record Official record
Conditions
Cognitive Disorders
Interventions
SUVN-G3031, Placebo
Drug
Lead sponsor
Suven Life Sciences Limited
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 14, 2016 · Synced Oct 20, 2026, 5:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Histamine Responsiveness in McCune-Albright Syndrome

NCT00318097
View directory record Official record
Conditions
McCune-Albright Syndrome
Interventions
Not listed
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
Up to 39 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 6, 2018 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 2 Interventional Results available

Personalized Treatment Algorithms for Difficult-to-treat Asthma

NCT04179461
View directory record Official record
Conditions
Asthma in Children
Interventions
Cholecalciferol, antihistamine, Azithromycin, emollient cream, Fluticasone Propionate, Asthma Controller Medication
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2021 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Randomized Evaluation of Ten Allergy Skin Prick Test Devices

NCT03509766
View directory record Official record
Conditions
Allergic Rhinitis, Asthma, Food Allergy, Skin Testing
Interventions
Histamine skin testing
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 16, 2018 · Synced Oct 20, 2026, 5:36 PM EDT
Completed Phase 4 Interventional

Fexofenadine HCl 180 mg, Desloratadine 5 mg and Placebo in Suppression of Wheal and Flare Induced by Histamine

NCT00637585
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Fexofenadine
Drug
Lead sponsor
Sanofi
Industry
Eligibility
12 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 11, 2011 · Synced Oct 20, 2026, 5:36 PM EDT