The short version
12 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.
Valproic Acid · VALPROIC ACID 500 mg/10mL · Solution · Oral · PAI Holdings, LLC dba PAI Pharma
NDC 00121-1350-00 · 10 TRAY in 1 CASE / 10 CUP, UNIT-DOSE in 1 TRAY / 10 mL in 1 CUP, UNIT-DOSE · ANDA · View full market →
12 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.
The same NDC has different prices depending on who is paying. Units differ between rungs — compare within a rung over time, not rung against rung, unless the units match.
Each rung is the newest figure for this NDC from one federal price system, shown with its own unit. Part D is matched by drug name because CMS publishes no NDCs there; it is gross spending, before confidential rebates.
Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.
No Medicare Part D plan in CMS's quarterly files lists this product. That usually means it is discontinued, a repackager's listing, or a product no plan has added to its formulary.
How Part D pricing works →No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Manufacturer list price as filed — not what pharmacies actually pay after discounts.
Not scored — fragility is computed for NADAC-priced NDCs.
OAI inspection at a producing facility (24 months) · sole-source market · price up 2% YoY
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.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| PAI Holdings, LLC dba PAI Pharma | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 3, 2026 |
| Remedyrepack Inc. | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 3, 2026 |
| American Health Packaging | VALPROIC ACID 500 mg/10mL | Jul 15, 2026 | Sep 2, 2026 |
| American Health Packaging | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| ANI Pharmaceuticals, Inc. | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Bryant Ranch Prepack | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Chartwell Governmental & Specialty RX, LLC. | VALPROIC ACID 500 mg/10mL | Jul 15, 2026 | Sep 2, 2026 |
| Chartwell Governmental & Specialty RX, LLC. | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Chartwell RX, LLC | VALPROIC ACID 500 mg/10mL | Jul 15, 2026 | Sep 2, 2026 |
| Chartwell RX, LLC | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Kesin Pharma Corporation | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Major Pharmaceuticals | VALPROIC ACID 250 mg/5mL | Aug 5, 2026 | Sep 2, 2026 |
| Major Pharmaceuticals | VALPROIC ACID 500 mg/10mL | Aug 5, 2026 | Sep 2, 2026 |
| NorthStar Rx LLC | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| PAI Holdings, LLC dba PAI Pharma | VALPROIC ACID 500 mg/10mL | Jul 15, 2026 | Sep 2, 2026 |
| Quagen Pharmaceuticals Llc | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
| Xttrium Laboratories Inc. | VALPROIC ACID 250 mg/5mL | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Valproic Acid — NDC 00121-1350-00," retrieved September 3, 2026, https://drugdashboards.com/drug/00121135000.
Free to cite with attribution — see how the data is put together.