Drugs / Ketotifen
last change Aug 2026 re-read 2 minutes ago

Ketotifen

Small molecule targets HRH1 via inhibition

Developed for
conjunctivitis · asthma · chronic pain syndrome · COVID-19 · dengue disease · eye allergy · hyperpigmentation of the skin · liver disorder
+9 more · perennial allergic rhinitis · ST-elevation myocardial infarction · tick-borne infectious disease · vulvodynia · atopic eczema · dyspepsia · fibromyalgia · peripheral neuropathy · vernal keratoconjunctivitis
Investigated by
Bausch & Lomb Incorporated · Alcon Research · Vistakon Pharmaceuticals · American Society for Surgery of the Hand · Assiut University · Canadian Institutes of Health Research (CIHR)
+24 more · Center for Vulvovaginal Disorders · Columbia University · Duke-NUS Graduate Medical School · Gordon Sussman Clinical Research · Johnson & Johnson Vision Care, Inc. · Mast Cell Pharmaceuticals Inc. · McGill University Health Centre/Research Institute of the McGill University Health Centre · National University Hospital, Singapore · National University of Singapore · National Vulvodynia Association · Novartis · ORA, Inc. · Organon and Co · Peking University Third Hospital · Sen-Jam Pharmaceutical · Senju USA, Inc. · Singapore General Hospital · Tanta University · The Louise And Alan Edwards Foundation · UCB Pharma · Universitaire Ziekenhuizen KU Leuven · University of Calgary · University of North Carolina, Chapel Hill · Workers' Compensation Board, Alberta

Regulatory milestones approvals, filings & regulatory actions · 2 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Label expansion US (FDA) ZADITOR 2006-10-19 fda.gov
Approved US (FDA) ZADITOR 1999-07-02 fda.gov

Trials 26 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT01326858 Apr → Jun 2011 conjunctivitis Alcon Research Completed No outcome recorded
Phase 28 trials
Phase 2 NCT07526558 Apr 2026 → Jan 2027 expected tick-borne infectious disease University of North Carolina, Chapel Hill Not yet recruiting No outcome recorded
Phase 2 NCT07257029 Jan → Aug 2026 overdue mast cell activation syndrome, vaginal disorder, vulvodynia Center for Vulvovaginal Disorders Recruiting No outcome recorded
Phase 2 NCT06942390 Jun 2025 → Jun 2026 overdue hyperpigmentation of the skin Assiut University Not yet recruiting No outcome recorded
Phase 2 NCT03388138 Dec 2017 → Feb 2018 Johnson & Johnson Vision Care, Inc. Completed No outcome recorded
Phase 2 NCT01902017 Jun 2013 → Aug 2017 University of Calgary Completed No outcome recorded
Phase 2 NCT01625715 Jan 2011 → Jun 2012 Gordon Sussman Clinical Research Unknown No outcome recorded
Phase 2 NCT00836485 Feb → Mar 2009 conjunctivitis Senju USA, Inc. Completed No outcome recorded
Phase 2 NCT00375596 conjunctivitis Bausch & Lomb Incorporated Withdrawn No outcome recorded
Phase 311 trials
Phase 3 NCT05815758 Apr → Sep 2023 eye allergy Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT05591755 Nov 2022 → Aug 2023 conjunctivitis Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT05579730 Oct 2022 → Jul 2023 conjunctivitis Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT05007522 May 2022 → Jun 2024 COVID-19 Sen-Jam Pharmaceutical Completed No outcome recorded
Phase 3 NCT03489941 Apr 2018 conjunctivitis Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT02984397 Dec 2016 → Jan 2020 chronic pain syndrome McGill University Health Centre/Research Institute of the McGill University Health Centre Completed No outcome recorded
Phase 3 NCT00770133 Feb → Apr 2010 conjunctivitis Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT00769886 Oct → Dec 2008 conjunctivitis Bausch & Lomb Incorporated Completed No outcome recorded
Phase 3 NCT00445874 Feb → May 2007 conjunctivitis Vistakon Pharmaceuticals Completed No outcome recorded
Phase 3 NCT00432757 Jan → Mar 2007 conjunctivitis Vistakon Pharmaceuticals Completed No outcome recorded
Phase 45 trials
Phase 4 NCT05616442 May 2023 → Mar 2025 liver disorder Tanta University Completed No outcome recorded
Phase 4 NCT05511831 Sep 2022 → Dec 2023 ST-elevation myocardial infarction Peking University Third Hospital Unknown No outcome recorded
Phase 4 NCT02673840 Mar 2015 → Jul 2016 dengue disease National University Hospital, Singapore Unknown No outcome recorded
Phase 4 NCT00133627 Apr → Oct 2005 conjunctivitis Novartis Completed No outcome recorded
Phase 4 NCT00446056 Sep 2003 → Jun 2004 asthma Organon and Co Completed No outcome recorded
Phase not applicable1 trial
NCT04399148 Jun → Sep 2019 Universitaire Ziekenhuizen KU Leuven Completed No outcome recorded
Also used as a comparator or background therapy in 9 trials
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 39 trials
Phase 3 NCT05624138 Comparator Nov 2022 → Apr 2024 overdue peripheral neuropathy Tanta University Recruiting No outcome recorded
Phase 3 NCT03582176 Comparator Apr 2019 → Sep 2024 University of Calgary Completed No outcome recorded
Phase 3 NCT03479307 Comparator Apr → Aug 2018 eye allergy Faes Farma, S.A. Completed No outcome recorded
Phase 3 NCT02484248 Comparator Aug 2015 → Apr 2027 expected dyspepsia Craig A. Friesen, MD Recruiting No outcome recorded
Phase 3 NCT01840605 Comparator Mar → Nov 2013 atopic eczema Tanabe Pharma Corporation Completed No outcome recorded

Evidence & citations 19 cited values

Every value below carries the sentence it was read from. 36 sources stand behind the page.

FieldValueCited text
Known as Ketotifen “This arm includes 51 patients receiving daily applications of topical ketotifen on one half of their face and topical metformin on the other half without undergoing...” NCT06942390
30

NCT05511831

NCT05579730

NCT07526558

NCT02182557

NCT03582176

NCT05616442

NCT00445874

NCT01625715

NCT01326858

NCT00770133

NCT00432757

NCT02673840

NCT00133627

NCT01902017

NCT05815758

NCT05591755

NCT00375596

NCT01553318

NCT00836485

NCT05007522

NCT02984397

NCT03388138

NCT02484248

NCT00769886

NCT03479307

NCT00446056

NCT05624138

NCT07257029

NCT04399148

NCT00639587

Known as (r)-ketotifen ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Acuvue theravision with ketotifen ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Alaway ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Children's alaway ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as HC 20,511 FUMARATE ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Ketotifen (as fumarate) ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Ketotifen Fumarate “Zaditor® (Ketotifen Fumarate Ophthalmic Solution 0.035%)” NCT03489941
3

NCT00426023

NCT01840605

NCT02182544

Known as Ketotifen hydrogen fumarate ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Ketotifen Oral Tablet “Drug: Ketotifen Oral TabletNCT05624138
Known as Ketotifene ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Ketotifeno ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as NSC-757415 ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Zaditen ChEMBL registry synonym — accepted as the source's own label CHEMBL534
Known as Zaditor “A Single-Center Evaluation of the Relative Efficacy of EM-100 Compared to Zaditor® (Ketotifen Fumarate Ophthalmic Solution 0.035%) and Vehicle” NCT03489941
Action Inhibit “Ketotifen works by inhibiting (to prevent or slow down) certain substances in the body that are known to cause inflammation.” NCT01553318
1

“Histamine H1 receptor antagonist” CHEMBL534

Modality Small molecule CHEMBL534
Route Topical “eye drop formulation” NCT00133627
Target HRH1 “Histamine H1 receptor antagonist” CHEMBL534