DEA schedule
Is isoniazid a controlled substance?
Federal schedule for isoniazid from the FDA NDC directory, checked against the DEA controlled substances list.
Source: FDA NDC Directory file dated 2026-10-22. Publisher page
No. Isoniazid is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and isoniazid is not on the DEA controlled substances list.
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Schedule check
| Source | What it lists |
|---|---|
| FDA NDC directory | 27 prescription listings from 14 labelers, none with a DEA schedule |
| DEA controlled substances list | isoniazid is not on the list |
Isoniazid NDC listings
| NDC | Product | Form | Strength | Labeler | DEA schedule |
|---|---|---|---|---|---|
| 0781-3056 | Isoniazid | injection, solution | 100 mg/mL | Sandoz Inc | None |
| 46287-009 | Isoniazid | solution | 50 mg/5mL | CMP Pharma, Inc. | None |
| 62135-550 | Isoniazid | solution | 50 mg/5mL | Chartwell RX, LLC | None |
| 0555-0066 | Isoniazid | tablet | 100 mg/1 | Teva Pharmaceuticals USA, Inc. | None |
| 10135-804 | isoniazid | tablet | 100 mg/1 | Marlex Pharmaceuticals, Inc. | None |
| 50090-0410 | Isoniazid | tablet | 100 mg/1 | A-S Medication Solutions | None |
| 64950-216 | Isoniazid | tablet | 100 mg/1 | Genus Lifesciences | None |
| 71335-3083 | Isoniazid | tablet | 100 mg/1 | Bryant Ranch Prepack | None |
| 72162-2444 | isoniazid | tablet | 100 mg/1 | Bryant Ranch Prepack | None |
| 81665-107 | isoniazid | tablet | 100 mg/1 | OMNIVIUM PHARMACEUTICALS LLC. | None |
| 0555-0071 | Isoniazid | tablet | 300 mg/1 | Teva Pharmaceuticals USA, Inc. | None |
| 10135-805 | isoniazid | tablet | 300 mg/1 | Marlex Pharmaceuticals, Inc. | None |
| 50090-0370 | Isoniazid | tablet | 300 mg/1 | A-S Medication Solutions | None |
| 50090-7660 | isoniazid | tablet | 300 mg/1 | A-S Medication Solutions | None |
| 51079-083 | Isoniazid | tablet | 300 mg/1 | Mylan Institutional Inc. | None |
| 62135-709 | Isoniazid | tablet | 300 mg/1 | Chartwell RX, LLC | None |
| 63187-978 | Isoniazid | tablet | 300 mg/1 | Proficient Rx LP | None |
| 64950-217 | Isoniazid | tablet | 300 mg/1 | Genus Lifesciences | None |
| 67046-1570 | Isoniazid | tablet | 300 mg/1 | Coupler LLC | None |
| 67046-1617 | isoniazid | tablet | 300 mg/1 | Coupler LLC | None |
| 70518-4315 | Isoniazid | tablet | 300 mg/1 | REMEDYREPACK INC. | None |
| 70518-4540 | isoniazid | tablet | 300 mg/1 | REMEDYREPACK INC. | None |
| 71335-2760 | Isoniazid | tablet | 300 mg/1 | Bryant Ranch Prepack | None |
| 71335-2800 | Isoniazid | tablet | 300 mg/1 | Bryant Ranch Prepack | None |
| 71610-395 | Isoniazid | tablet | 300 mg/1 | Aphena Pharma Solutions - Tennessee, LLC | None |
| 72162-2445 | isoniazid | tablet | 300 mg/1 | Bryant Ranch Prepack | None |
| 81665-108 | isoniazid | tablet | 300 mg/1 | OMNIVIUM PHARMACEUTICALS LLC. | None |
Questions
Is isoniazid a controlled substance?
No. Isoniazid is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and isoniazid is not on the DEA controlled substances list.
Is isoniazid a narcotic?
No. Isoniazid is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Antimycobacterial.
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.