What is Diazolinum used for?

Diazolinum is indicated for Allergic rhinitis.

What development phase is Diazolinum in?

Diazolinum is FDA-approved (marketed).

What is the generic name of Diazolinum?

MEBHYDROLIN is the generic (nonproprietary) name of Diazolinum.

Last reviewed 2026-04-20 · How we verify

Diazolinum (MEBHYDROLIN)

FDA-approved active Small molecule Quality 17/100

Mebhydrolin (Diazolinum) is a marketed antihistamine primarily indicated for allergic rhinitis, competing in a class with several off-patent generics such as cyproheptadine and triprolidine. Its key strength lies in its mechanism of action, effectively blocking the histamine H1 receptor to alleviate allergy symptoms. The primary risk is the upcoming key composition patent expiry in 2028, which could lead to increased competition from generics.

At a glance

Generic name	MEBHYDROLIN
Drug class	mebhydrolin
Target	Histamine H1 receptor
Modality	Small molecule
Therapeutic area	Immunology
Phase	FDA-approved

Approved indications

Allergic rhinitis

Common side effects

No common side effects on file.

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Diazolinum CI brief — competitive landscape report
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