DrugDashboards

Rugby

Antacid Tablets · CALCIUM CARBONATE 500 mg/1 · Tablet, Chewable · Oral · Rugby Laboratories

NDC 00536-1048-15 · 150 TABLET, CHEWABLE in 1 BOTTLE, PLASTIC · OTC MONOGRAPH DRUG · View full market →

The short version

20 companies supply this market — deep enough that no single failure threatens the supply. The price has held steady around $0.0168 per unit over the past year. Put together: this looks like a healthy supply — the boring kind, which is exactly what you want.

The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.

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.

  • Pharmacies pay (NADAC)$0.0168per EAinvoice-surveyed acquisition cost · Aug 19, 2026
  • Federal contracts pay (FSS)$0.0113per unitThe Harvard Drug Group L.L.C. dba Major Pharmaceuticals and Rugby Labs · Jun 1, 202567% of what pharmacies pay — a deeper discount than 76% of drugs with this benchmark

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

$0$0.01$0.02Mar 2015Sep 2026$0.0168
139 price points · per EASource: CMS NADAC

Estimated fill cost

#30 count
$0.51
#90 count
$1.52

Estimates: latest NADAC unit price × quantity. Pharmacy acquisition cost only — excludes dispensing fees, markup, and insurance terms.

Medicaid spend (2025)

$206,635
24,584 prescriptions paid by Medicaid nationally · all Medicaid spend →

Supply fragility

0● Low risk

Nothing here is signaling trouble: several manufacturers, no current shortage, no recent serious recalls, stable pricing. In drug supply, boring is the good outcome.

The score counts pressure that is already visible — fewer makers, shortages, recalls, falling prices. 0 means none of it; 100 means all of it at once. Recomputed daily · as of Sep 3, 2026

90-day shortage risk (model v2)

0.1%chance of a new FDA shortage posting for antacid tablets (oral solid) in the next 90 days

sole-source market · price up 1% YoY

For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.

Backtested statistical model over the whole market, not this package alone. Model details →

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 Antacid Tablets (Tablet, Chewable)

LabelerStrengthFirst seenLast seen
Chain Drug ConsortiumCALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 3, 2026
Cvs Pharmacy,inc.CALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 3, 2026
SafewayCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 3, 2026
Wal-Mart Stores,Inc.,CALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 3, 2026
Chain Drug Marketing AssociationCALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
CvsCALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
CvsCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 2, 2026
Cvs PharmacyCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 2, 2026
CVS Pharmacy,Inc.CALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
H-E-BCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 2, 2026
Lidl US LLCCALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
Major PharmaceuticalsCALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
NuCare Pharmaceuticals,Inc.CALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
Rugby LaboratoriesCALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
Rugby LaboratoriesCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 2, 2026
Rugby Laboratories, Inc.CALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
SafewayCALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
Target corporationCALCIUM CARBONATE 750 mg/1Jul 15, 2026Sep 2, 2026
The Kroger Co.,CALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
Wal-Mart Stores,Inc.,CALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
Walgreen Co.CALCIUM CARBONATE 500 mg/1Jul 15, 2026Sep 2, 2026
Whole Foods Market, Inc.CALCIUM CARBONATE 1000 mg/1Jul 15, 2026Sep 2, 2026
Target CorporationCALCIUM CARBONATE 750 mg/1Jul 15, 2026Aug 31, 2026
Chain Drug Consortium, LLCCALCIUM CARBONATE 500 mg/1Jul 15, 2026Aug 28, 2026

Roster from daily NDC Directory diffs — first/last seen dates start July 2026.

Cite this page

DrugDashboards, "Rugby — NDC 00536-1048-15," retrieved September 3, 2026, https://drugdashboards.com/drug/00536104815.

Free to cite with attribution — see how the data is put together.