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Last Updated: December 12, 2025

PROMETHAZINE W Drug Patent Profile

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Which patents cover Promethazine W, and what generic alternatives are available?

Promethazine W is a drug marketed by Cenci, Pharmobedient, and Pharm Assoc. and is included in three NDAs.

The generic ingredient in PROMETHAZINE W is dextromethorphan hydrobromide; promethazine hydrochloride. There are twenty-three drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the dextromethorphan hydrobromide; promethazine hydrochloride profile page.

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Summary for PROMETHAZINE W

US Patents:	0
Applicants:	3
NDAs:	3
DailyMed Link:	PROMETHAZINE W at DailyMed

Drug patent expirations by year for PROMETHAZINE W

US Patents and Regulatory Information for PROMETHAZINE W

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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
Cenci	PROMETHAZINE W/ CODEINE	codeine phosphate; promethazine hydrochloride	SYRUP;ORAL	088814-001	Nov 22, 1985		DISCN	No	No	⤷ Get Started Free	⤷ Get Started Free				⤷ Get Started Free
Pharmobedient	PROMETHAZINE W/ DEXTROMETHORPHAN	dextromethorphan hydrobromide; promethazine hydrochloride	SYRUP;ORAL	088864-001	Jan 4, 1985	AA	RX	No	No	⤷ Get Started Free	⤷ Get Started Free				⤷ Get Started Free
Pharm Assoc	PROMETHAZINE WITH CODEINE	codeine phosphate; promethazine hydrochloride	SYRUP;ORAL	040650-001	Jan 31, 2006		DISCN	No	No	⤷ Get Started Free	⤷ Get Started Free				⤷ Get Started Free
>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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