Last Updated: June 22, 2026

PHERAZINE Drug Patent Profile


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Which patents cover Pherazine, and when can generic versions of Pherazine launch?

Pherazine is a drug marketed by Halsey and is included in four NDAs.

The generic ingredient in PHERAZINE is codeine phosphate; promethazine hydrochloride. There are nineteen drug master file entries for this compound. Five suppliers are listed for this compound. Additional details are available on the codeine phosphate; promethazine hydrochloride profile page.

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Summary for PHERAZINE
US Patents:0
Applicants:1
NDAs:4
DailyMed Link:PHERAZINE at DailyMed
Drug patent expirations by year for PHERAZINE

US Patents and Regulatory Information for PHERAZINE

Glossary
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Halsey PHERAZINE DM dextromethorphan hydrobromide; promethazine hydrochloride SYRUP;ORAL 088913-001 Mar 2, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Halsey PHERAZINE W/ CODEINE codeine phosphate; promethazine hydrochloride SYRUP;ORAL 088739-001 Dec 23, 1988 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Halsey PHERAZINE VC phenylephrine hydrochloride; promethazine hydrochloride SYRUP;ORAL 088868-001 Mar 2, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Halsey PHERAZINE VC W/ CODEINE codeine phosphate; phenylephrine hydrochloride; promethazine hydrochloride SYRUP;ORAL 088870-001 Mar 2, 1987 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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DrugChatter Q&A for PHERAZINE
Pherazine with codeine coupon?
Pherazine with codeine coupon?
Pherazine with codeine price?
Pherazine vc with codeine reviews?
Pherazine vc with codeine price?

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

 
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Preferred Citation:

Friedman, Yali. "DrugPatentWatch" DrugPatentWatch, thinkBiotech, 2026, www.DrugPatentWatch.com.
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