The short version
Just 3 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.
Magnesium Sulfate
Magnesium Sulfate · MAGNESIUM SULFATE HEPTAHYDRATE 500 mg/mL · Injection, Solution · Intramuscular; Intravenous · Henry Schein, Inc.
NDC 00404-9904-02 · 1 VIAL, SINGLE-DOSE in 1 BAG / 2 mL in 1 VIAL, SINGLE-DOSE · NDA · View full market →
One drug, every price
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.
ⓘ How this was built
Data sources
- CMS NADAC (pharmacy acquisition, weekly)
- CMS Part B ASP quarterly payment limits
- CMS Maximum Fair Prices (IRA negotiated, NDC-level)
- Medicare Part D Spending by Drug (data.cms.gov, name-matched)
- VA FSS / Big4 federal contract prices (va.gov, twice monthly)
- ACA Federal Upper Limits + weighted AMP (data.medicaid.gov, monthly)
- California SB-17 WAC filings (list price, per package)
Method
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 B pays (ASP+6%)$0.4460per billing unit (500 MG)HCPCS J3475 · Jul 1, 2026
- Part D plans paid (avg)$0.1460per dosage unitgross, before rebates — matched by drug name · 2024
Medicare Part D
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 →NADAC price per unit
No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Medicare Part B (ASP)
Payment limit per 500 MG
$0.446
HCPCS J3475 · Jul 1, 2026 quarter · typically ASP + 6%
Supply fragility
Not scored — fragility is computed for NADAC-priced NDCs.
Is this a "specialty" drug?
There's no legal definition — it meets 2 of 6 public criteria. Why that matters →
- Part D specialty tier
- Costs ≥ $950/fill · avg $18.25 per prescription
- Biologic (BLA)
- Injectable / infused
- Orphan-drug exclusivity
- REMS program · Xywav and Xyrem
Regulatory
- Application
- NDA019316
- TE code
- AP
- Approval date
- Sep 8, 1986
- Patents / exclusivity
- None on file
Shortage history
No FDA shortage reports for this drug or its presentations.
Recalls (this NDC)
No enforcement reports list this package NDC.
Manufacturers of Magnesium Sulfate (Injection, Solution)
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 500 mg/mL | Jul 15, 2026 | Sep 3, 2026 |
| HF Acquisition Co LLC, DBA HealthFirst | MAGNESIUM SULFATE HEPTAHYDRATE 500 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Henry Schein, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 500 mg/mL | Jul 15, 2026 | Aug 31, 2026 |
| HF Acquisition Co LLC, DBA HealthFirst | MAGNESIUM SULFATE HEPTAHYDRATE 40 mg/mL | Jul 15, 2026 | Aug 28, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
Cite this page
DrugDashboards, "Magnesium Sulfate — NDC 00404-9904-02," retrieved September 3, 2026, https://drugdashboards.com/drug/00404990402.
Free to cite with attribution — see how the data is put together.