Last Updated: November 13, 2026

Mechanism of Action: Xanthine Oxidase Inhibitors

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Drugs with Mechanism of Action: Xanthine Oxidase Inhibitors

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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
Zydus Pharms	ALLOPURINOL	allopurinol	TABLET;ORAL	210117-001	Oct 12, 2017	AB	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Hetero Labs Ltd V	ALLOPURINOL	allopurinol	TABLET;ORAL	217748-001	Aug 3, 2023	AB	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Aurobindo Pharma Ltd	ALLOPURINOL	allopurinol	TABLET;ORAL	215091-001	Apr 14, 2025	AB	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Mylan	ALLOPURINOL	allopurinol	TABLET;ORAL	018659-001	Oct 24, 1986	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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