The short version
4 companies supply this market — a reasonable cushion if one runs into trouble.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Antacid Calcium carbonate · CALCIUM CARBONATE 500 mg/1 · Tablet, Chewable · Oral · Akron Pharma Inc
NDC 71399-9939-01 · 150 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC · OTC MONOGRAPH DRUG · View full market →
4 companies supply this market — a reasonable cushion if one runs into trouble.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
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 →No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Not scored — fragility is computed for NADAC-priced NDCs.
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Akron Pharma Inc | CALCIUM CARBONATE 500 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Bjwc | CALCIUM CARBONATE 1000 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Cardinal Health 110, Llc. Dba Leader | CALCIUM CARBONATE 1000 mg/1 | Jul 22, 2026 | Sep 2, 2026 |
| Walgreen Co. | CALCIUM CARBONATE 750 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Regular Strength Assorted Flavors — NDC 71399-9939-01," retrieved September 3, 2026, https://drugdashboards.com/drug/71399993901.
Free to cite with attribution — see how the data is put together.