DEA schedule
Is Tiadylt ER a controlled substance?
Tiadylt ER contains diltiazem. Federal schedule from the FDA NDC directory, checked against the DEA controlled substances list.
Source: FDA NDC Directory file dated 2026-10-22. Publisher page
No. Tiadylt ER (diltiazem) is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and diltiazem is not on the DEA controlled substances list.
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Schedule check
| Source | What it lists |
|---|---|
| FDA NDC directory | 13 prescription listings from 3 labelers, none with a DEA schedule |
| DEA controlled substances list | diltiazem is not on the list |
Tiadylt ER NDC listings
| NDC | Product | Form | Strength | Labeler | DEA schedule |
|---|---|---|---|---|---|
| 68382-745 | TIADYLT ER | capsule, extended release | 120 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1035 | TIADYLT ER | capsule, extended release | 120 mg/1 | Zydus Lifesciences Limited | None |
| 71335-9719 | TIADYLT ER | capsule, extended release | 120 mg/1 | Bryant Ranch Prepack | None |
| 68382-746 | TIADYLT ER | capsule, extended release | 180 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1036 | TIADYLT ER | capsule, extended release | 180 mg/1 | Zydus Lifesciences Limited | None |
| 68382-747 | TIADYLT ER | capsule, extended release | 240 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1037 | TIADYLT ER | capsule, extended release | 240 mg/1 | Zydus Lifesciences Limited | None |
| 68382-748 | TIADYLT ER | capsule, extended release | 300 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1038 | TIADYLT ER | capsule, extended release | 300 mg/1 | Zydus Lifesciences Limited | None |
| 68382-749 | TIADYLT ER | capsule, extended release | 360 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1039 | TIADYLT ER | capsule, extended release | 360 mg/1 | Zydus Lifesciences Limited | None |
| 68382-750 | TIADYLT ER | capsule, extended release | 420 mg/1 | Zydus Pharmaceuticals (USA) Inc. | None |
| 70771-1040 | TIADYLT ER | capsule, extended release | 420 mg/1 | Zydus Lifesciences Limited | None |
Questions
Is Tiadylt ER a controlled substance?
No. Tiadylt ER (diltiazem) is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and diltiazem is not on the DEA controlled substances list.
Is Tiadylt ER a narcotic?
No. Tiadylt ER (diltiazem) is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Calcium Channel Blocker.
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.
More on Tiadylt ER
- What is Tiadylt ER used for?FDA label uses
- What is Diltiazem used for?FDA label uses
- Is Diltiazem a controlled substance?Federal schedule
- Generic for Cardizem CDFDA Orange Book
- Generic for Cardizem SRFDA Orange Book
- Generic for Dilacor XRFDA Orange Book
- Generic for TiazacFDA Orange Book
- Generic for CardizemFDA Orange Book
- Generic for Cardizem LAFDA Orange Book
- Calcium Channel Blockers listFDA drug class
- NDC 68382-745Tiadylt ER NDC record
- NDC 68382-746Tiadylt ER NDC record
- NDC 68382-747Tiadylt ER NDC record