Who are diphenhydramine ampule's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Lastacaft, Xyzal, Elestat, Rupax, Zaditor, Mizollen.

How often does this brief refresh?

Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Subscribe to /feed/ci/diphenhydramine-ampule.xml in any RSS reader (Feedly, Inoreader, NewsBlur). Every regulatory action, trial readout, or patent event lands in your feed automatically.

Last reviewed 2026-06-10 · How we verify

diphenhydramine ampule — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

diphenhydramine ampule (diphenhydramine ampule) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Antihistamine. Area: Allergy.

phase 3 Antihistamine Histamine H1 receptor Allergy Small molecule Live · refreshed every 30 min

Target snapshot

diphenhydramine ampule (diphenhydramine ampule) — Ministry Of Health / Nineveh Health Directorate. Diphenhydramine acts as an antihistamine by blocking the action of histamine in the body.

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
diphenhydramine ampule TARGET	diphenhydramine ampule	Ministry Of Health / Nineveh Health Directorate	phase 3	Antihistamine	Histamine H1 receptor
Lastacaft	ALCAFTADINE	AbbVie	marketed	Histamine-1 Receptor Antagonist [EPC]	Histamine H1 receptor	2010-01-01
Xyzal	LEVOCETIRIZINE	Sanofi	marketed	Histamine-1 Receptor Antagonist	Histamine H1 receptor	2007-01-01
Elestat	EPINASTINE	AbbVie	marketed	Adrenergic Receptor Agonist	Histamine H1 receptor	2003-01-01
Rupax	RUPATADINE	Teikoku Seiyaku	marketed	rupatadine	Histamine H1 receptor	2001-01-01
Zaditor	KETOTIFEN		marketed	Histamine-1 Receptor Inhibitor	Histamine H1 receptor	1999-01-01
Mizollen	MIZOLASTINE	Sanofi	marketed	mizolastine	Histamine H1 receptor	1998-01-01

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (Antihistamine class)

· 1 drug in this class
Allergan · 1 drug in this class
Campus Bio-Medico University · 1 drug in this class
Chattem · 1 drug in this class
Erasmus Medical Center · 1 drug in this class
Ministry Of Health / Nineveh Health Directorate · 1 drug in this class
Pfizer · 1 drug in this class
UCB Pharma · 1 drug in this class

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Cite this brief

Drug Landscape (2026). diphenhydramine ampule — Competitive Intelligence Brief. https://druglandscape.com/ci/diphenhydramine-ampule. Accessed 2026-06-10.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing