The short version
Only one company currently supplies this market — there is no backup if it stumbles.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Inon Ace
magnesium aluminosilicate, magnesium hydroxide · SILODRATE 900 mg/30mL; MAGNESIUM HYDROXIDE 250 mg/30mL · Solution · Oral · Sato Pharmaceutical Co., Ltd.
NDC 49873-0403-01 · 2 BOTTLE in 1 CARTON / 30 mL in 1 BOTTLE · OTC MONOGRAPH DRUG · View full market →
Medicare Part D
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 →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.
Is this a "specialty" drug?
There's no legal definition — it meets 1 of 6 public criteria. Why that matters →
- Part D specialty tier
- Costs ≥ $950/fill
- Biologic (BLA)
- Injectable / infused
- Orphan-drug exclusivity
- REMS program · Xywav and Xyrem
Regulatory
- Application
- M001
- TE code
- —
- Approval date
- —
- 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 aluminosilicate, magnesium hydroxide (Solution)
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Sato Pharmaceutical Co., Ltd. | SILODRATE 900 mg/30mL; MAGNESIUM HYDROXIDE 250 mg/30mL | Aug 26, 2026 | Sep 2, 2026 |
| Sato Pharmaceutical Co., Ltd. | SILODRATE 250 mg/30mL; MAGNESIUM HYDROXIDE 900 mg/30mL | Jul 22, 2026 | Aug 19, 2026 |
| Sato Pharmaceutical Co., Ltd. | MAGNESIUM HYDROXIDE 250 mg/30mL; SILODRATE 900 mg/30mL | Jul 15, 2026 | Jul 15, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
Cite this page
DrugDashboards, "Inon Ace — NDC 49873-0403-01," retrieved September 3, 2026, https://drugdashboards.com/drug/49873040301.
Free to cite with attribution — see how the data is put together.