The short version
20 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.
guaifenesin · GUAIFENESIN 600 mg/1 · Tablet, Multilayer, Extended Release · Oral · Walmart Inc.
NDC 79903-0292-06 · 1 BOTTLE in 1 CARTON / 20 TABLET, MULTILAYER, EXTENDED RELEASE in 1 BOTTLE · ANDA · View full market →
20 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.
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
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 |
|---|---|---|---|
| Amerisource Bergen | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Rite Aid Corporation | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Amazon.com Services LLC | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Bjwc | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 110, LLC. dba Leader | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 110, LLC. dba Leader | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| CVS Pharmacy | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Dolgencorp, LLC | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| HyVee Inc | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| HyVee Inc | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| L. Perrigo Company | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Meijer Distribution Inc | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Meijer Distribution Inc | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Precision Dose Inc. | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Redpharm Drug | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Rugby Laboratories | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Rugby Laboratories | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Strategic Sourcing Services LLC | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Target Corporation | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Target Corporation | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Topco Associates LLC | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Walmart Inc. | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Amazon.com Services LLC | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 31, 2026 |
| Cvs Woonsocket Prescription Center, Incorporated | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Aug 31, 2026 |
| Cvs Woonsocket Prescription Center, Incorporated | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 31, 2026 |
| Dolgencorp Inc | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 28, 2026 |
| L. Perrigo Company | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 28, 2026 |
| Live Betr LLC | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 28, 2026 |
| Topco Associates LLC | GUAIFENESIN 1200 mg/1 | Jul 15, 2026 | Aug 28, 2026 |
| Walmart Inc. | GUAIFENESIN 600 mg/1 | Jul 15, 2026 | Aug 28, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "equate mucus-er — NDC 79903-0292-06," retrieved September 3, 2026, https://drugdashboards.com/drug/79903029206.
Free to cite with attribution — see how the data is put together.