Last Updated: November 13, 2026

BENYLIN Drug Patent Profile

When do Benylin patents expire, and what generic alternatives are available?

Benylin is a drug marketed by Parke Davis and is included in two NDAs.

The generic ingredient in BENYLIN is diphenhydramine hydrochloride. Twenty suppliers are listed for this compound. Additional details are available on the diphenhydramine hydrochloride profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Benylin

A generic version of BENYLIN was approved as diphenhydramine hydrochloride by WEST-WARD PHARMS INT on December 31^st, 1969.

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Summary for BENYLIN

US Patents:	0
Applicants:	1
NDAs:	2

US Patents and Regulatory Information for BENYLIN

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Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Parke Davis	BENYLIN	diphenhydramine hydrochloride; pseudoephedrine hydrochloride	SOLUTION;ORAL	019014-001	Jun 11, 1985		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Parke Davis	BENYLIN	diphenhydramine hydrochloride	SYRUP;ORAL	006514-004	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Exclusivity Expiration

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