Last Updated: August 3, 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. There is one drug master file entry for this compound. 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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