Last Updated: May 3, 2026

ZAROXOLYN Drug Patent Profile

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When do Zaroxolyn patents expire, and when can generic versions of Zaroxolyn launch?

Zaroxolyn is a drug marketed by I3 Pharms and is included in one NDA.

The generic ingredient in ZAROXOLYN is metolazone. There are ten drug master file entries for this compound. Twenty suppliers are listed for this compound. Additional details are available on the metolazone profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Zaroxolyn

A generic version of ZAROXOLYN was approved as metolazone by SANDOZ on December 19^th, 2003.

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Summary for ZAROXOLYN

US Patents:	0
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for ZAROXOLYN

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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
I3 Pharms	ZAROXOLYN	metolazone	TABLET;ORAL	017386-001	Approved Prior to Jan 1, 1982		DISCN	Yes	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
I3 Pharms	ZAROXOLYN	metolazone	TABLET;ORAL	017386-002	Approved Prior to Jan 1, 1982		DISCN	Yes	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
I3 Pharms	ZAROXOLYN	metolazone	TABLET;ORAL	017386-003	Approved Prior to Jan 1, 1982		DISCN	Yes	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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