DrugDashboards

Fiber Lax

Calcium Polycarbophil · CALCIUM POLYCARBOPHIL 625 mg/1 · Tablet, Film Coated · Oral · Rugby Laboratories

NDC 00536-4306-05 · 500 TABLET, FILM COATED in 1 BOTTLE · OTC MONOGRAPH DRUG · View full market →

The short version

19 companies supply this market — deep enough that no single failure threatens the supply. The price has held steady around $0.0584 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)$0.0584per EAinvoice-surveyed acquisition cost · Aug 19, 2026
  • Federal contracts pay (FSS)$0.0429per unitThe Harvard Drug Group L.L.C. dba Major Pharmaceuticals and Rugby Labs · Oct 15, 202573% of what pharmacies pay — a deeper discount than 71% 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$0.025$0.05$0.075Nov 2013Sep 2026$0.0584
155 price points · per EASource: CMS NADAC

Estimated fill cost

#30 count
$1.75
#90 count
$5.25

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

Medicaid spend (2025)

$673,564
70,667 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 calcium polycarbophil (oral solid) in the next 90 days

sole-source market · price up 2% 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 →

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
M007
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 Calcium Polycarbophil (Tablet, Film Coated)

LabelerStrengthFirst seenLast seen
Amazon.com Services LlcCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Best Choice (Valu Merchandisers Company)CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Contract Pharmacal Corp.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
CVS Pharmacy, IncCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Geri-Care Pharmaceutical CorpCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Guardian Drug CompanyCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
LEADER/ Cardinal Health 110, Inc.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Major PharmaceuticalsCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Meijer Distribution, IncCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
PD-Rx Pharmaceuticals, Inc.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Pharmacy Value Alliance, LlcCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Publix Super Markets, IncCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Rite Aid CorporationCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Rugby LaboratoriesCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
SafewayCALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Shandong Xinhua Pharmaceutical Co., Ltd.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
The Kroger Co.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Walgreens Co.CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Sep 2, 2026
Quality Choice (Chain Drug Marketing Association)CALCIUM POLYCARBOPHIL 625 mg/1Jul 15, 2026Aug 31, 2026

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

Cite this page

DrugDashboards, "Fiber Lax — NDC 00536-4306-05," retrieved September 3, 2026, https://drugdashboards.com/drug/00536430605.

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