OpenBilldrug price receipt

NADAC week of 2026-10-14

MATZIM LA 420 MG TABLET

FDA nonproprietary name: diltiazem hydrochloride

For 30 tablets

Pharmacies pay

$78.96 filed

30 × $2.63186 per EA

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D paid

$41.41 filed

30 × $1.38048 per EA, Part D average

Medicare's price is not your price.

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18


The spread

0.52× estimated

Medicare paid 48% less than pharmacies pay.

Part D averages every strength and form sold under “Matzim La” / “Diltiazem HCl” into one figure, so it is not specific to this NDC.

OpenBill calculation · DSD_PTD_RY26_P04_V10_DY24_BGM.csv + nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17) · Part D 2024-01-01 to 2024-12-31 (file of 2026-06-25, retrieved 2026-10-18)

Cost-plus estimate

$95.80 estimated

$78.96 + $11.84 (15%) + $5.00 fee per fill = $95.80

This is a model, not a price any pharmacy quoted. Shipping is not included. How it is worked out

OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)

Open the interactive card Change the quantity, type what you were charged, and see every record in full.

What it is

MATZIM LA 420 MG TABLET is how the CMS NADAC file names this product. The FDA NDC Directory lists it as diltiazem hydrochloride, under the trade name “Matzim LA”.

FDA gives its dosage form as tablet, extended release and its route as oral.

The labeler, the company named on the label, is Actavis Pharma, Inc.

FDA’s Established Pharmacologic Class for it is Calcium Channel Blocker.

The NADAC file of 2026-10-14 prices it under 2 NDCs (National Drug Codes).

NADAC classes it as a generic drug (rate-setting class G), and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $78.96 for 30 tablets (30 × $2.63186 per EA, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation code for it: 1, calculated from the most recently completed pharmacy survey.

All 2 NDCs

Other strengths, forms and brands

38 other products in the NADAC file share the FDA nonproprietary name diltiazem hydrochloride with MATZIM LA 420 MG TABLET. The 23 below share a strength or dosage form with it first; search OpenBill for the rest.

ProductPharmacies pay per unitMedicare per unit
CARTIA XT 120 MG CAPSULE
generic · capsule, extended release
$0.14353 per EA filed
eff. 2026-09-23
$0.36508 per EA filed
Part D 2024 average
CARTIA XT 180 MG CAPSULE
generic · capsule, extended release
$0.1873 per EA filed
eff. 2026-09-23
$0.36508 per EA filed
Part D 2024 average
CARTIA XT 240 MG CAPSULE
generic · capsule, extended release
$0.19688 per EA filed
eff. 2026-09-23
$0.36508 per EA filed
Part D 2024 average
CARTIA XT 300 MG CAPSULE
generic · capsule, extended release
$0.30196 per EA filed
eff. 2026-09-23
$0.36508 per EA filed
Part D 2024 average
DILT XR 120 MG CAPSULE
generic · capsule, extended release
$0.31058 per EA filed
eff. 2026-09-23
We don’t know yet
DILT XR 180 MG CAPSULE
generic · capsule, extended release
$0.36629 per EA filed
eff. 2026-09-23
We don’t know yet
DILT XR 240 MG CAPSULE
generic · capsule, extended release
$0.48864 per EA filed
eff. 2026-09-23
We don’t know yet
DILTIAZEM 12HR ER 60 MG CAP
generic · capsule, extended release
$1.42657 per EA filed
eff. 2026-09-23
$1.7737 per EA filed
Part D 2024 average
DILTIAZEM 12HR ER 90 MG CAP
generic · capsule, extended release
$1.66135 per EA filed
eff. 2026-09-23
$1.7737 per EA filed
Part D 2024 average
DILTIAZEM 12HR ER 120 MG CAP
generic · capsule, extended release
$1.97043 per EA filed
eff. 2026-09-23
$1.7737 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(CD) 120 MG CP
generic · capsule, extended release / capsule, coated, extended release
$0.14353 per EA filed
eff. 2026-09-23
$0.38833 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 120 MG TB
generic · tablet, extended release
$1.12264 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 180 MG TB
generic · tablet, extended release
$1.03058 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 240 MG TB
generic · tablet, extended release
$1.0087 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 300 MG TB
generic · tablet, extended release
$1.92826 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 360 MG TB
generic · tablet, extended release
$1.83372 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 24H ER(LA) 420 MG TB
generic · tablet, extended release
$2.63186 per EA filed
eff. 2026-09-23
$1.50646 per EA filed
Part D 2024 average
DILTIAZEM 120 MG TABLET
generic · tablet, film coated / tablet
$0.09903 per EA filed
eff. 2026-09-23
$0.21692 per EA filed
Part D 2024 average
MATZIM LA 180 MG TABLET
generic · tablet, extended release
$1.03058 per EA filed
eff. 2026-09-23
$1.38048 per EA filed
Part D 2024 average
MATZIM LA 240 MG TABLET
generic · tablet, extended release
$1.0087 per EA filed
eff. 2026-09-23
$1.38048 per EA filed
Part D 2024 average
MATZIM LA 300 MG TABLET
generic · tablet, extended release
$1.92826 per EA filed
eff. 2026-09-23
$1.38048 per EA filed
Part D 2024 average
MATZIM LA 360 MG TABLET
generic · tablet, extended release
$1.83372 per EA filed
eff. 2026-09-23
$1.38048 per EA filed
Part D 2024 average
MATZIM LA 420 MG TABLET this page
generic · tablet, extended release
$2.63186 per EA filed
eff. 2026-09-23
$1.38048 per EA filed
Part D 2024 average
TIADYLT ER 420 MG CAPSULE
generic · capsule, extended release
$0.99395 per EA filed
eff. 2026-09-23
$0.40151 per EA filed
Part D 2024 average

Part D is one average per brand and generic name, over every strength and form.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

Compared with its class

The middle of its 2 NDCs’ NADAC prices is $2.63186 per EA filed.

Of the 107 other products in FDA’s Calcium Channel Blocker class priced per EA, 31 have a higher middle NADAC price and 75 a lower one; 1 has the same. The one in the middle is OLMSRTN-AMLDPN-HYDROCHLOROTHIAZIDE 40-5-25 MG, at $0.99481 per EA filed (eff. 2026-09-23).

Prices are compared per unit, whatever the strength or dose, and a class is not a list of substitutes.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

What Medicare paid

Medicare Part D paid $41.41 for 30 tablets, at an average of $1.38048 per EA in 2024 (2024-01-01 to 2024-12-31) for “Matzim La” and “Diltiazem HCl”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 47,025 Part D claims (fills, including refills) for 2024-01-01 to 2024-12-31, across every maker, strength and form under the name.

Medicare's price is not your price.

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

Questions

Why is the comparison with Medicare for MATZIM LA 420 MG TABLET labelled estimated?
Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Matzim La / Diltiazem HCl: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's EA. Joined on brand name.