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Active ingredient

Chlorzoxazone

33 finished FDA listings contain Chlorzoxazone as their only active ingredient.

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FDA NDC Directory

Ingredient names as written by FDA
CHLORZOXAZONE
Dosage forms
Tablet
Routes
Oral
Manufacturers / labelers
18
Strengths listed
250 mg/1 · 375 mg/1 · 500 mg/1 · 750 mg/1

RxNorm (National Library of Medicine)

Ingredient concept RxCUI 2410

Drugs@FDA applications

Linked only where the FDA listing’s application number matches Drugs@FDA exactly. A listing in the NDC Directory does not by itself mean FDA approval.

ApplicationSponsorOriginal approvalListings
ANDA 089859WATSON LABS1988-05-045
ANDA 089853AUROBINDO PHARMA LTD1988-05-049
ANDA 207483PHARMOBEDIENT2016-06-241
ANDA 212254NOVITIUM PHARMA2019-09-122
ANDA 211849DR REDDYS LABS SA2020-07-211
ANDA 212743PH HEALTH2020-11-022
ANDA 215158SENORES PHARMS2021-07-292
ANDA 213126RISING2022-04-056
ANDA 214702COREPHARMA2023-04-102
ANDA 216925RISING2023-08-091
ANDA 210961SENORES PHARMS2024-01-222

Official labeling on DailyMed

Showing the 12 most recent of 27 labels.

Sources: FDA NDC Directory (2026-09-29), RxNorm, Drugs@FDA, DailyMed. Each source’s facts are shown separately as published.