DEA schedule
Is ethosuximide a controlled substance?
Federal schedule for ethosuximide from the FDA NDC directory, checked against the DEA controlled substances list.
Source: FDA NDC Directory file dated 2026-10-22. Publisher page
No. Ethosuximide is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and ethosuximide is not on the DEA controlled substances list.
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Schedule check
| Source | What it lists |
|---|---|
| FDA NDC directory | 12 prescription listings from 9 labelers, none with a DEA schedule |
| DEA controlled substances list | ethosuximide is not on the list |
Ethosuximide NDC listings
| NDC | Product | Form | Strength | Labeler | DEA schedule |
|---|---|---|---|---|---|
| 0071-0237 | Zarontin | capsule | 250 mg/1 | Parke-Davis Div of Pfizer Inc | None |
| 42806-708 | Ethosuximide | capsule | 250 mg/1 | Epic Pharma, LLC | None |
| 42806-711 | Ethosuximide | capsule | 250 mg/1 | Epic Pharma, LLC | None |
| 62135-790 | ETHOSUXIMIDE | capsule | 250 mg/1 | Chartwell RX, LLC | None |
| 64380-878 | ETHOSUXIMIDE | capsule | 250 mg/1 | Strides Pharma Science Limited | None |
| 63629-8005 | Ethosuximide | capsule, liquid filled | 250 mg/1 | Bryant Ranch Prepack | None |
| 69452-152 | Ethosuximide | capsule, liquid filled | 250 mg/1 | Bionpharma Inc. | None |
| 0121-0670 | ETHOSUXIMIDE | solution | 250 mg/5mL | PAI Holdings, LLC dba PAI Pharma | None |
| 59762-2350 | Ethosuximide | solution | 250 mg/5mL | Mylan Pharmaceuticals Inc. | None |
| 62135-064 | Ethosuximide | solution | 250 mg/5mL | Chartwell RX, LLC | None |
| 68999-064 | Ethosuximide | solution | 250 mg/5mL | Chartwell Governmental & Specialty RX, LLC. | None |
| 0071-2418 | Zarontin | solution | 250 mg/5mL | Parke-Davis Div of Pfizer Inc | None |
Questions
Is ethosuximide a controlled substance?
No. Ethosuximide is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and ethosuximide is not on the DEA controlled substances list.
Is ethosuximide a narcotic?
No. Ethosuximide is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Anti-epileptic Agent.
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.