Last Updated: November 13, 2026

GRISACTIN Drug Patent Profile

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

Grisactin is a drug marketed by Wyeth Ayerst and is included in four NDAs.

The generic ingredient in GRISACTIN is griseofulvin, ultramicrocrystalline. Additional details are available on the griseofulvin, ultramicrocrystalline profile page.

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Summary for GRISACTIN

US Patents:	0
Applicants:	1
NDAs:	4

US Patents and Regulatory Information for GRISACTIN

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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
Wyeth Ayerst	GRISACTIN	griseofulvin, microcrystalline	CAPSULE;ORAL	050051-002	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Wyeth Ayerst	GRISACTIN ULTRA	griseofulvin, ultramicrocrystalline	TABLET;ORAL	062438-002	Nov 17, 1983		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Wyeth Ayerst	GRISACTIN ULTRA	griseofulvin, ultramicrocrystalline	TABLET;ORAL	062178-001	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Wyeth Ayerst	GRISACTIN	griseofulvin, microcrystalline	CAPSULE;ORAL	050051-001	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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