Wednesday, July 8, 2026

Drug profile · INN

antazoline phosphate

antazoline phosphate (VASOCON-A) is a histamine h1 receptor antagonist. Route of administration: ophthalmic. Current US regulatory status: approved.

FDA: approved
US status approved
Patents linked 0
Pipeline programs 5
News articles 0
Drug details — antazoline phosphate
US status
approved
Class
Route
OPHTHALMIC
Patents
0
Programs
5
Data quality
0.84

Quick answer

antazoline phosphate (VASOCON-A) is a histamine h1 receptor antagonist. Route of administration: ophthalmic. Current US regulatory status: approved.

Key facts

INN antazoline phosphate
Brand VASOCON-A
Mechanism Histamine H1 receptor antagonist
Target Histamine H1 receptor
Route OPHTHALMIC
Formulation SOLUTION/DROPS

Mechanism of action

Histamine H1 receptor antagonist

Primary target: Histamine H1 receptor

Approval history

Authority Status Date
FDA approved

Pipeline programs

  1. SOC plus 15mg/kg EB05 IV Phase 3 · Edesa Biotech · COVID-19
  2. standard of care (SOC) Nucleoside reverse transcriptase inhibitor (NrtI) Phase 2 · ASSEMBLY BIOSCIENCES · Chronic Hepatitis B
  3. 209664 Phase 1 · GSK Glaxo Smith · Multiple Myeloma
  4. DBP-053-01 Phase 1 · Anaxis Pharma · Glioblastoma
  5. SOC + TSC-100 Phase 1 · TScan Therapeutics · AML

Related & competitor drugs

  1. azelastine hydrochloride Histamine H1 receptor antagonist
  2. brompheniramine maleate Histamine H1 receptor antagonist
  3. carbinoxamine maleate Histamine H1 receptor antagonist
  4. cetirizine hydrochloride Histamine H1 receptor antagonist
  5. chlorpheniramine maleate Histamine H1 receptor antagonist
  6. clemastine fumarate Histamine H1 receptor antagonist

Frequently asked questions

What is antazoline phosphate?

antazoline phosphate (VASOCON-A) is a histamine h1 receptor antagonist. Route of administration: ophthalmic. Current US regulatory status: approved.

What is the brand name for antazoline phosphate?

VASOCON-A is a marketed brand name for antazoline phosphate. Check FDA Drugs@FDA for the current US label holder and prescribing information.

What is the US approval status of antazoline phosphate?

antazoline phosphate has approved status in the United States according to our Drugs@FDA-derived records. Verify on the official FDA label before clinical or commercial decisions.