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 in Water
Magnesium Sulfate In Water · MAGNESIUM SULFATE HEPTAHYDRATE 40 g/1000mL · Injection, Solution · Intravenous · Hospira, Inc.
NDC 00409-3164-12 · 12 POUCH in 1 CASE / 1 BAG in 1 POUCH / 1000 mL in 1 BAG · 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)$0.1782per 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.
Estimated fill cost
WAC per package, as filed
$101.10
Reported to Texas DSHS · 2026 annual filing · Pfizer Inc.
Manufacturer list price as filed — not what pharmacies actually pay after discounts.
Medicare Part B (ASP)
Payment limit per 500 MG
$0.446
HCPCS J3475 · Jul 1, 2026 quarter · typically ASP + 6%
Medicaid spend (2025)
$764,167
1,695 prescriptions paid by Medicaid nationally · all Medicaid spend →
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 $39.93 per prescription
- Biologic (BLA)
- Injectable / infused
- Orphan-drug exclusivity
- REMS program · Xywav and Xyrem
Regulatory
- Application
- NDA020309
- TE code
- AP
- Approval date
- Jun 24, 1994
- Patents / exclusivity
- None on file
Shortage history
No FDA shortage reports for this drug or its presentations.
Recalls (this NDC)
- Class II · TerminatedOct 3, 2018Pfizer Inc. — Correct Labeled Product Mispack: confirmed report involving a single unit of properly labeled Heparin in 0.45% Sodium Chloride for Injection (NDC 0409-7651-03, Lot 87903FW) that was found inside a case of Magnesium Sulfate in Water for Injection.
- Class I · TerminatedJan 5, 2016Hospira Inc. — Labeling: Incorrect Barcode: Primary bag labeling may be mislabeled with the wrong barcode which scans in as heparin sodium.
- Class III · TerminatedApr 5, 2012Hospira, Inc. — Superpotent (Single Ingredient) Drug: Above specification assay results for percentage of magnesium sulfate.
Manufacturers of Magnesium Sulfate In Water (Injection, Solution)
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 2 g/50mL | Aug 27, 2026 | Sep 3, 2026 |
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 4 g/100mL | Aug 27, 2026 | Sep 3, 2026 |
| Athenex Pharmaceutical Division, LLC. | MAGNESIUM SULFATE HEPTAHYDRATE 40 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Athenex Pharmaceutical Division, LLC. | MAGNESIUM SULFATE HEPTAHYDRATE 80 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Avenacy, LLC | MAGNESIUM SULFATE HEPTAHYDRATE 80 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Avenacy, LLC | MAGNESIUM SULFATE HEPTAHYDRATE 40 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 40 mg/mL | Jul 15, 2026 | Sep 2, 2026 |
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 40 g/1000mL | Jul 15, 2026 | Sep 2, 2026 |
| Hospira, Inc. | MAGNESIUM SULFATE HEPTAHYDRATE 20 g/500mL | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
Cite this page
DrugDashboards, "Magnesium Sulfate in Water — NDC 00409-3164-12," retrieved September 3, 2026, https://drugdashboards.com/drug/00409316412.
Free to cite with attribution — see how the data is put together.