The short version
7 companies supply this market — a reasonable cushion if one runs into trouble.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Guaifenesin and Dextromethorphan Hydrobromide · GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 · Tablet, Extended Release · Oral · Select Consumer Group
NDC 85237-1650-01 · 2 TABLET, EXTENDED RELEASE in 1 POUCH · NDA · View full market →
7 companies supply this market — a reasonable cushion if one runs into trouble.
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.
sole-source market · price up 1% 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 |
|---|---|---|---|
| A-S Medication Solutions | GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 | Aug 26, 2026 | Sep 3, 2026 |
| Lil' Drug Store Products, Inc. | GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 | Aug 26, 2026 | Sep 3, 2026 |
| A-S Medication Solutions | GUAIFENESIN 1200 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Cvs Pharmacy, Inc | GUAIFENESIN 1200 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Reckitt Benckiser LLC | GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Reckitt Benckiser LLC | GUAIFENESIN 1200 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Rite-Aid | GUAIFENESIN 1200 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Select Consumer Group | GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Sportpharm LLC | GUAIFENESIN 600 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1 | Aug 26, 2026 | Sep 2, 2026 |
| Lil' Drug Store Products, Inc. | GUAIFENESIN 30 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 600 mg/1 | Jul 22, 2026 | Aug 22, 2026 |
| A-S Medication Solutions | GUAIFENESIN 30 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 600 mg/1 | Jul 22, 2026 | Aug 20, 2026 |
| A-S Medication Solutions | GUAIFENESIN 60 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 1200 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Cvs Pharmacy, Inc | GUAIFENESIN 60 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 1200 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Reckitt Benckiser LLC | GUAIFENESIN 30 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 600 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Reckitt Benckiser LLC | GUAIFENESIN 60 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 1200 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Rite-Aid | GUAIFENESIN 60 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 1200 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Select Consumer Group | GUAIFENESIN 30 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 600 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| Sportpharm LLC | GUAIFENESIN 30 mg/1; DEXTROMETHORPHAN HYDROBROMIDE 600 mg/1 | Jul 22, 2026 | Aug 19, 2026 |
| A-S Medication Solutions | DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1; GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Jul 18, 2026 |
| Lil' Drug Store Products, Inc. | DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1; GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Jul 16, 2026 |
| A-S Medication Solutions | DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1; GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Cvs Pharmacy, Inc | DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1; GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Reckitt Benckiser LLC | DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1; GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Reckitt Benckiser LLC | DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1; GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Rite-Aid | DEXTROMETHORPHAN HYDROBROMIDE 60 mg/1; GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Select Consumer Group | DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1; GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
| Sportpharm LLC | DEXTROMETHORPHAN HYDROBROMIDE 30 mg/1; GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Jul 15, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Mucinex DM — NDC 85237-1650-01," retrieved September 3, 2026, https://drugdashboards.com/drug/85237165001.
Free to cite with attribution — see how the data is put together.