Magnesium Oxide · MAGNESIUM OXIDE 400 mg/1 · Tablet · Oral · Endo USA
NDC 00603-0209-22 · 120 TABLET in 1 BOTTLE · OTC MONOGRAPH DRUG · View full market →
13 companies supply this market — deep enough that no single failure threatens the supply. The price has held steady around $0.0347 per unit over the past year. Put together: this looks like a healthy supply — the boring kind, which is exactly what you want.
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.
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 →Estimates: latest NADAC unit price × quantity. Pharmacy acquisition cost only — excludes dispensing fees, markup, and insurance terms.
Nothing here is signaling trouble: several manufacturers, no current shortage, no recent serious recalls, stable pricing. In drug supply, boring is the good outcome.
The score counts pressure that is already visible — fewer makers, shortages, recalls, falling prices. 0 means none of it; 100 means all of it at once. Recomputed daily · as of Sep 3, 2026
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 →
There's no legal definition — it meets 1 of 6 public criteria. Why that matters →
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Aphena Pharma Solutions - Tennessee, LLC | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| Bryant Ranch Prepack | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| A-S Medication Solutions | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Apnar Pharma Lp | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Belleview Bioscience LLC | MAGNESIUM OXIDE 400 mg/400mg | Jul 15, 2026 | Sep 2, 2026 |
| Belleview Biosciences | MAGNESIUM OXIDE 241.3 mg/1000mg | Jul 15, 2026 | Sep 2, 2026 |
| Endo USA | MAGNESIUM OXIDE 253 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Endo USA | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Kesin Pharma | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Marlex Pharmaceuticals Inc | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Marlex Pharmaceuticals Inc. | MAGNESIUM OXIDE 420 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Method Pharmaceuticals, LLC | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Richmond Pharmaceuticals, Inc. | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Richmond Pharmaceuticals, Inc. | MAGNESIUM OXIDE 420 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Westminster Pharmaceuticals, LLC | MAGNESIUM OXIDE 400 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Magnesium Oxide — NDC 00603-0209-22," retrieved September 3, 2026, https://drugdashboards.com/drug/00603020922.
Free to cite with attribution — see how the data is put together.