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Last Updated: December 12, 2025

Details for New Drug Application (NDA): 021627

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NDA 021627 describes NAMENDA, which is a drug marketed by Allergan and Abbvie and is included in three NDAs. It is available from three suppliers. There is one patent protecting this drug and five Paragraph IV challenges. Additional details are available on the NAMENDA profile page.

The generic ingredient in NAMENDA is memantine hydrochloride. There are twenty-eight drug master file entries for this compound. Forty suppliers are listed for this compound. Additional details are available on the memantine hydrochloride profile page.

Summary for 021627

Tradename:	NAMENDA
Applicant:	Allergan
Ingredient:	memantine hydrochloride
Patents:	0

Medical Subject Heading (MeSH) Categories for 021627

Antiparkinson Agents
Dopamine Agents
Excitatory Amino Acid Antagonists

Profile for product number 001

Active Rx/OTC/Discontinued:	DISCN	Dosage:	SOLUTION;ORAL			Strength	2MG/ML Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons
Approval Date:	Apr 18, 2005	TE:		RLD:	Yes

Expired US Patents for NDA 021627

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Allergan	NAMENDA	memantine hydrochloride	SOLUTION;ORAL	021627-001	Apr 18, 2005	5,614,560	⤷ Get Started Free
Allergan	NAMENDA	memantine hydrochloride	SOLUTION;ORAL	021627-001	Apr 18, 2005	5,061,703*PED	⤷ Get Started Free
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>Patent No.	>Patent Expiration

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