Last Updated: September 28, 2026

ascorbic acid - Profile

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What are the generic sources for ascorbic acid and what is the scope of patent protection?

Ascorbic acid is the generic ingredient in eighteen branded drugs marketed by Mcguff, Fresenius Kabi Usa, Stira, Sandoz Canada Inc, Apotex, Hospira, Roche, Abraxis Pharm, Watson Labs, Teligent, Salix Pharms, Novel Labs Inc, Taro, and Salix, and is included in nineteen NDAs. There are eleven patents protecting this compound. Additional information is available in the individual branded drug profile pages.

Summary for ascorbic acid

US Patents:	11
Tradenames:	18
Applicants:	13
NDAs:	18

US Patents and Regulatory Information for ascorbic acid

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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
Mcguff	ASCOR	ascorbic acid	SOLUTION;INTRAVENOUS	209112-001	Oct 2, 2017	AP	RX	Yes	Yes	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Fresenius Kabi Usa	ASCORBIC ACID	ascorbic acid	SOLUTION;INTRAVENOUS	217131-001	Aug 7, 2025	AP	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Stira	ASCORBIC ACID	ascorbic acid	SOLUTION;INTRAVENOUS	220172-001	Jul 30, 2026	AP	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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