The short version
6 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/phenylephrine · GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 · Tablet · Oral · Valu Merch
NDC 63941-0986-50 · 1 BOTTLE in 1 CARTON / 50 TABLET in 1 BOTTLE · OTC MONOGRAPH DRUG · View full market →
6 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.
Medicare Part D does not cover over-the-counter drugs — by law it pays only for products requiring a prescription.
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.
price up 15% YoY · 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 |
|---|---|---|---|
| AmerisourceBergen Drug Corp | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| CVS Pharmacy, Inc. | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Rugby Laboratories | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Topco Associates Llc | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Valu Merch | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Strategic Sourcing Services LLC | GUAIFENESIN 400 mg/1; PHENYLEPHRINE HYDROCHLORIDE 10 mg/1 | Jul 15, 2026 | Aug 31, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Always Save Mucus Relief PE — NDC 63941-0986-50," retrieved September 3, 2026, https://drugdashboards.com/drug/63941098650.
Free to cite with attribution — see how the data is put together.