The short version
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Acetylcysteine · ACETYLCYSTEINE 200 mg/mL · Inhalant · Respiratory (Inhalation) · Cardinal Health 107, LLC
NDC 55154-5731-05 · 5 VIAL, GLASS in 1 BAG / 4 mL in 1 VIAL, GLASS · ANDA · View full market →
Just 2 companies supply this market — thin enough that a single exit would be felt immediately.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
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.
Not scored — fragility is computed for NADAC-priced NDCs.
OAI inspection at a producing facility (24 months) · sole-source market · price up 7% 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 →
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Cardinal Health 107, LLC | ACETYLCYSTEINE 100 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 107, LLC | ACETYLCYSTEINE 200 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| American Regent, Inc. | ACETYLCYSTEINE 100 mg/mL | Jul 15, 2026 | Aug 31, 2026 |
| American Regent, Inc. | ACETYLCYSTEINE 200 mg/mL | Jul 15, 2026 | Aug 31, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Acetylcysteine — NDC 55154-5731-05," retrieved September 3, 2026, https://drugdashboards.com/drug/55154573105.
Free to cite with attribution — see how the data is put together.