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 · HF Acquisition Co LLC, DBA HealthFirst
NDC 51662-1372-01 · 20 mL in 1 VIAL, SINGLE-DOSE · NDA · View full market →
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.
Supply fragility
Not scored — fragility is computed for NADAC-priced NDCs.
Where it's made
- HF Acquisition Co LLCUnited Statesrelabel
Establishments this product's FDA label declares, located via FDA registration data. How we built this →
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 51662-1372-01," retrieved September 3, 2026, https://drugdashboards.com/drug/51662137201.
Free to cite with attribution — see how the data is put together.