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Last Updated: March 26, 2026

Details for New Drug Application (NDA): 019757

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NDA 019757 describes CHIBROXIN, which is a drug marketed by Merck and is included in one NDA. Additional details are available on the CHIBROXIN profile page.

The generic ingredient in CHIBROXIN is norfloxacin. There are seven drug master file entries for this compound. Additional details are available on the norfloxacin profile page.

Summary for 019757

Tradename:	CHIBROXIN
Applicant:	Merck
Ingredient:	norfloxacin
Patents:	0

Medical Subject Heading (MeSH) Categories for 019757

Anti-Bacterial Agents
Cytochrome P-450 CYP1A2 Inhibitors
Topoisomerase II Inhibitors

Profile for product number 001

Active Rx/OTC/Discontinued:	DISCN	Dosage:	SOLUTION/DROPS;OPHTHALMIC			Strength	0.3%
Approval Date:	Jun 17, 1991	TE:		RLD:	No

Expired US Patents for NDA 019757

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Merck	CHIBROXIN	norfloxacin	SOLUTION/DROPS;OPHTHALMIC	019757-001	Jun 17, 1991	4,146,719	⤷ Start Trial
Merck	CHIBROXIN	norfloxacin	SOLUTION/DROPS;OPHTHALMIC	019757-001	Jun 17, 1991	4,551,456	⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>Patent No.	>Patent Expiration

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