DEA schedule
Is chlorzoxazone a controlled substance?
Federal schedule for chlorzoxazone from the FDA NDC directory, checked against the DEA controlled substances list.
Source: FDA NDC Directory file dated 2026-10-22. Publisher page
No. Chlorzoxazone is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and chlorzoxazone is not on the DEA controlled substances list.
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Schedule check
| Source | What it lists |
|---|---|
| FDA NDC directory | 36 prescription listings from 19 labelers, none with a DEA schedule |
| DEA controlled substances list | chlorzoxazone is not on the list |
Chlorzoxazone NDC listings
| NDC | Product | Form | Strength | Labeler | DEA schedule |
|---|---|---|---|---|---|
| 24470-923 | CHLORZOXAZONE | tablet | 250 mg/1 | Cintex Services, LLC | None |
| 31722-974 | CHLORZOXAZONE | tablet | 250 mg/1 | Camber Pharmaceuticals, Inc. | None |
| 64980-582 | Chlorzoxazone | tablet | 250 mg/1 | Rising Pharma Holdings, Inc. | None |
| 69499-330 | chlorzoxazone | tablet | 250 mg/1 | Solubiomix | None |
| 72336-225 | Chlorzoxazone | tablet | 250 mg/1 | Lifsa Drugs LLC | None |
| 87127-801 | CHLORZOXAZONE | tablet | 250 mg/1 | Happy Robin, LLC | None |
| 0254-2053 | Chlorzoxazone | tablet | 375 mg/1 | Par Health USA, LLC | None |
| 16571-725 | CHLORZOXAZONE | tablet | 375 mg/1 | Rising Pharma Holdings, Inc. | None |
| 59651-305 | CHLORZOXAZONE | tablet | 375 mg/1 | Aurobindo Pharma Limited | None |
| 80425-0525 | CHLORZOXAZONE | tablet | 375 mg/1 | Advanced Rx of Tennessee, LLC | None |
| 85766-282 | CHLORZOXAZONE | tablet | 375 mg/1 | Sportpharm LLC | None |
| 0591-2520 | Chlorzoxazone | tablet | 500 mg/1 | Actavis Pharma, Inc. | None |
| 16571-726 | CHLORZOXAZONE | tablet | 500 mg/1 | Rising Pharma Holdings, Inc. | None |
| 24470-940 | CHLORZOXAZONE | tablet | 500 mg/1 | Cintex Services, LLC | None |
| 50090-0315 | Chlorzoxazone | tablet | 500 mg/1 | A-S Medication Solutions | None |
| 50090-7504 | CHLORZOXAZONE | tablet | 500 mg/1 | A-S Medication Solutions | None |
| 51862-339 | Chlorzoxazone | tablet | 500 mg/1 | Mayne Pharma Commercial LLC | None |
| 55289-633 | Chlorzoxazone | tablet | 500 mg/1 | PD-Rx Pharmaceuticals, Inc. | None |
| 59651-306 | CHLORZOXAZONE | tablet | 500 mg/1 | Aurobindo Pharma Limited | None |
| 63187-317 | Chlorzoxazone | tablet | 500 mg/1 | Proficient Rx LP | None |
| 63629-1586 | Chlorzoxazone | tablet | 500 mg/1 | Bryant Ranch Prepack | None |
| 70518-4364 | CHLORZOXAZONE | tablet | 500 mg/1 | REMEDYREPACK INC. | None |
| 70954-085 | Chlorzoxazone | tablet | 500 mg/1 | Novitium Pharma LLC | None |
| 71205-711 | CHLORZOXAZONE | tablet | 500 mg/1 | Proficient Rx LP | None |
| 71335-1914 | Chlorzoxazone | tablet | 500 mg/1 | Bryant Ranch Prepack | None |
| 71335-2009 | CHLORZOXAZONE | tablet | 500 mg/1 | Bryant Ranch Prepack | None |
| 71335-2433 | CHLORZOXAZONE | tablet | 500 mg/1 | Bryant Ranch Prepack | None |
| 71335-3122 | CHLORZOXAZONE | tablet | 500 mg/1 | Bryant Ranch Prepack | None |
| 80425-0315 | Chlorzoxazone | tablet | 500 mg/1 | Advanced Rx Pharmacy of Tennessee, LLC | None |
| 80425-0507 | CHLORZOXAZONE | tablet | 500 mg/1 | Advanced Rx of Tennessee, LLC | None |
| 85766-283 | CHLORZOXAZONE | tablet | 500 mg/1 | Sportpharm LLC | None |
| 0254-2005 | Chlorzoxazone | tablet | 750 mg/1 | Par Health USA, LLC | None |
| 16571-727 | CHLORZOXAZONE | tablet | 750 mg/1 | Rising Pharma Holdings, Inc. | None |
| 59651-307 | CHLORZOXAZONE | tablet | 750 mg/1 | Aurobindo Pharma Limited | None |
| 80425-0526 | CHLORZOXAZONE | tablet | 750 mg/1 | Advanced Rx of Tennessee, LLC | None |
| 85766-284 | CHLORZOXAZONE | tablet | 750 mg/1 | Sportpharm LLC | None |
Questions
Is chlorzoxazone a controlled substance?
No. Chlorzoxazone is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and chlorzoxazone is not on the DEA controlled substances list.
Is chlorzoxazone a narcotic?
No. Chlorzoxazone is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Muscle Relaxant.
Does this page cover state schedules?
No. This page reports the federal schedule only. Some states schedule drugs on their own; check your state board of pharmacy.