Last Updated: June 17, 2026

SPIRONOLACTONE W Drug Patent Profile

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

Spironolactone W is a drug marketed by Ivax Pharms, Lederle, Parke Davis, Purepac Pharm, Upsher Smith, Usl Pharma, Vangard, and Watson Labs. and is included in nine NDAs.

The generic ingredient in SPIRONOLACTONE W is hydrochlorothiazide; spironolactone. There are thirty-two drug master file entries for this compound. Six suppliers are listed for this compound. Additional details are available on the hydrochlorothiazide; spironolactone profile page.

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Summary for SPIRONOLACTONE W

US Patents:	0
Applicants:	8
NDAs:	9

US Patents and Regulatory Information for SPIRONOLACTONE 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
Ivax Pharms	SPIRONOLACTONE W/ HYDROCHLOROTHIAZIDE	hydrochlorothiazide; spironolactone	TABLET;ORAL	087004-002	May 24, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Vangard	SPIRONOLACTONE W/ HYDROCHLOROTHIAZIDE	hydrochlorothiazide; spironolactone	TABLET;ORAL	087655-001	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Purepac Pharm	SPIRONOLACTONE W/ HYDROCHLOROTHIAZIDE	hydrochlorothiazide; spironolactone	TABLET;ORAL	088054-001	Aug 18, 1983		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Watson Labs	SPIRONOLACTONE W/ HYDROCHLOROTHIAZIDE	hydrochlorothiazide; spironolactone	TABLET;ORAL	085974-001	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Lederle	SPIRONOLACTONE W/ HYDROCHLOROTHIAZIDE	hydrochlorothiazide; spironolactone	TABLET;ORAL	087511-001	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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