The short version
25 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Tizanidine · TIZANIDINE HYDROCHLORIDE 4 mg/1 · Tablet · Oral · Dr. Reddy's Laboratories Limited
NDC 55111-0180-03 · 300 TABLET in 1 BOTTLE · ANDA · View full market →
25 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Matched to CMS's representative package for this drug (NDC 55111-0180-15) — same generic, strength, and dosage form. CMS prices one NDC per drug concept, not every package.
Negotiated 30-day point-of-sale unit prices and formulary terms aggregated across every unsuppressed Part D and MA-PD plan for the quarter shown. Point of sale means gross of confidential rebates. CMS publishes one representative NDC per drug concept (RxCUI) rather than every package, so these figures come from CMS's representative package for the same drug — matched on generic name, strength, and dosage form. Estimated from MedPAC's program-wide rebate aggregates (June 2023: DIR = 29% of gross Part D spending; brand rebates ≈ 25–40% of gross, generics minimal). Actual rebates are confidential and vary widely by drug — this is a range, not a fact about this drug.
Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.
*No drug-level rebate is public — the estimate applies MedPAC's program-wide brand rebate range to this drug's gross price. Tracked here for 10 quarters since 2024.
No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Not scored — fragility is computed for NADAC-priced NDCs.
sole-source market
For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.
Backtested statistical model over the whole market, not this package alone. Model details →
Establishments this product's FDA label declares, located via FDA registration data. How we built this →
No FDA shortage reports for this drug or its presentations.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| A-S Medication Solutions | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| A-S Medication Solutions | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Advanced Rx of Tennessee, LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Asclemed USA, Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Asclemed USA, Inc. | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Bryant Ranch Prepack | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Bryant Ranch Prepack | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| NuCare Pharmaceuticals,Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| PD-Rx Pharmaceuticals, Inc. | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| PD-Rx Pharmaceuticals, Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Proficient Rx LP | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Proficient Rx LP | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Redpharm Drug | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Remedyrepack Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Advanced Rx Pharmacy of Tennessee, LLC | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| American Health Packaging | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| American Health Packaging | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Aphena Pharma Solutions - Tennessee, LLC | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Apotex Corp. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Apotex Corp. | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Ascend Laboratories, LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Ascend Laboratories, LLC | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| AvPAK | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| AvPAK | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 107, LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Coupler LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Direct_rx | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Direct_rx | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Dr. Reddy's Laboratories Limited | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Dr. Reddy's Laboratories Limited | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Hawaii Repack, Inc. | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Hawaii Repack, Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Major Pharmaceuticals | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Medcore LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Medcore LLC | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NCS HealthCare of KY, LLC dba Vangard Labs | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NCS HealthCare of KY, LLC dba Vangard Labs | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NorthStar Rx LLC | TIZANIDINE HYDROCHLORIDE 2 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NorthStar Rx LLC | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| NuCare Pharmaceuticals, Inc. | TIZANIDINE HYDROCHLORIDE 4 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Tizanidine — NDC 55111-0180-03," retrieved September 3, 2026, https://drugdashboards.com/drug/55111018003.
Free to cite with attribution — see how the data is put together.