OpenBilldrug price receipt

NADAC week of 2026-10-14

PENTAZOCINE-NALOXONE TABLET

For 30 tablets

Pharmacies pay

$61.86 filed

30 × $2.0619 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

$48.82 filed

30 × $1.62729 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

0.79× estimated

Medicare paid 21% less than pharmacies pay.

Part D averages every strength and form sold under “Pentazocine-Naloxone HCl” / “Pentazocine HCl/Naloxone 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

$76.14 estimated

$61.86 + $9.28 (15%) + $5.00 fee per fill = $76.14

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

PENTAZOCINE-NALOXONE TABLET is how the CMS NADAC file names this product. The FDA NDC Directory lists it as pentazocine hydrochloride and naloxone hydrochloride, under the trade name “Pentazocine and naloxone”.

FDA gives its dosage form as tablet and its route as oral.

Its labelers, the companies named on the label, are Actavis Pharma, Inc. and Lupin Pharmaceuticals,Inc.

FDA lists it under 2 Established Pharmacologic Classes: Opioid Antagonist and Partial Opioid Agonist/Antagonist.

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 $61.86 for 30 tablets (30 × $2.0619 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

Compared with its class

The middle of its 2 NDCs’ NADAC prices is $2.0619 per EA filed.

Of the 30 other products in FDA’s Opioid Antagonist class priced per EA, 25 have a higher middle NADAC price and 5 a lower one. The one in the middle is MOVANTIK 12.5 MG TABLET, at $14.59872 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 $48.82 for 30 tablets, at an average of $1.62729 per EA in 2024 (2024-01-01 to 2024-12-31) for “Pentazocine-Naloxone HCl” and “Pentazocine HCl/Naloxone HCl”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 4,809 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 PENTAZOCINE-NALOXONE 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 Pentazocine-Naloxone HCl / Pentazocine HCl/Naloxone 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 generic name.