Wednesday, July 8, 2026

Drug profile · INN

diphenylpyraline hydrochloride

diphenylpyraline hydrochloride (HISPRIL) is a histamine h1 receptor antagonist. Route of administration: oral. Current US regulatory status: approved.

FDA: approved
US status approved
Patents linked 2
Pipeline programs 0
News articles 0
Drug details — diphenylpyraline hydrochloride
US status
approved
Class
Route
ORAL
Patents
2
Programs
0
Data quality
0.84

Quick answer

diphenylpyraline hydrochloride (HISPRIL) is a histamine h1 receptor antagonist. Route of administration: oral. Current US regulatory status: approved.

Key facts

INN diphenylpyraline hydrochloride
Brand HISPRIL
Mechanism Histamine H1 receptor antagonist
Target Histamine H1 receptor
Route ORAL
Formulation CAPSULE, EXTENDED RELEASE

Mechanism of action

Histamine H1 receptor antagonist

Primary target: Histamine H1 receptor

Approval history

Authority Status Date
FDA approved

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

Related patents

  1. US 8748621

    1,3-disubstituted 4-(aryl-X-phenyl)-1H-pyridin-2-ones

    Expires Mon Jun 05 2034 00:00:00 GMT+0000 (Coordinated Universal Time)

    granted
  2. US 8252937

    1,3-disubstituted 4-(aryl-X-phenyl)-1H-pyridin-2-ones

    Expires Mon Aug 23 2032 00:00:00 GMT+0000 (Coordinated Universal Time)

    granted

Frequently asked questions

What is diphenylpyraline hydrochloride?

diphenylpyraline hydrochloride (HISPRIL) is a histamine h1 receptor antagonist. Route of administration: oral. Current US regulatory status: approved.

What is the brand name for diphenylpyraline hydrochloride?

HISPRIL is a marketed brand name for diphenylpyraline hydrochloride. Check FDA Drugs@FDA for the current US label holder and prescribing information.

What is the US approval status of diphenylpyraline hydrochloride?

diphenylpyraline hydrochloride 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.