Last Updated: June 22, 2026

DOXEPIN Drug Patent Profile


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Which patents cover Doxepin, and what generic alternatives are available?

Doxepin is a drug marketed by Adaptis, Aiping Pharm Inc, Ajanta Pharma Ltd, Alembic, Amneal Pharms Co, Appco, Aurobindo Pharma Ltd, Chartwell Rx, Dava Pharms Inc, Epic Pharma Llc, Ixora Lifescience, Jubilant Cadista, Lannett Co Inc, Mankind Pharma, Micro Labs, MSN, Mylan Pharms Inc, New River, Ph Health, Purepac Pharm, Quantum Pharmics, Sandoz, Sun Pharm Industries, Taro, Unique, Velzen Pharma Pvt, Watson Labs, Watson Labs Teva, Zydus Lifesciences, Pharm Assoc, Pharmobedient Cnsltg, Teva Pharms, Amneal, Sun Pharma Canada, Actavis Elizabeth, Rk Pharma, and Strides Pharma Intl. and is included in seventy-nine NDAs.

The generic ingredient in DOXEPIN is doxepin hydrochloride. There are seven drug master file entries for this compound. Fifty-one suppliers are listed for this compound. Additional details are available on the doxepin hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Doxepin

A generic version of DOXEPIN was approved as doxepin hydrochloride by MYLAN PHARMS INC on May 13th, 1986.

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Summary for DOXEPIN

US Patents and Regulatory Information for DOXEPIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Micro Labs DOXEPIN HYDROCHLORIDE doxepin hydrochloride CAPSULE;ORAL 217688-005 Jun 27, 2023 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Quantum Pharmics DOXEPIN HYDROCHLORIDE doxepin hydrochloride CAPSULE;ORAL 070972-001 Sep 29, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Dava Pharms Inc DOXEPIN HYDROCHLORIDE doxepin hydrochloride CAPSULE;ORAL 071675-001 Jan 5, 1988 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Chartwell Rx DOXEPIN HYDROCHLORIDE doxepin hydrochloride CAPSULE;ORAL 210268-001 Sep 4, 2020 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Zydus Lifesciences DOXEPIN HYDROCHLORIDE doxepin hydrochloride TABLET;ORAL 202761-001 Aug 16, 2023 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Aurobindo Pharma Ltd DOXEPIN HYDROCHLORIDE doxepin hydrochloride TABLET;ORAL 216041-001 Jul 25, 2024 AB RX 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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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.