NUEDEXTA 20-10 MG CAPSULE

What it is

NUEDEXTA 20-10 MG CAPSULE is how the CMS NADAC file names this product. The FDA NDC Directory lists it as dextromethorphan hydrobromide and quinidine sulfate, under the trade name “Nuedexta”.

FDA gives its dosage form as capsule, gelatin coated and its route as oral.

The labeler, the company named on the label, is Otsuka America Pharmaceutical, Inc.

FDA lists it under 4 Established Pharmacologic Classes: Antiarrhythmic, Cytochrome P450 2D6 Inhibitor, Sigma-1 Agonist and Uncompetitive N-methyl-D-aspartate Receptor Antagonist.

The NADAC file of 2026-10-14 prices it under 2 NDCs (National Drug Codes); the FDA directory lists 1 of them.

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

What pharmacies pay

Pharmacies pay $799.06 for 30 capsules (30 × $26.63535 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.

What NADAC measures · Why 30 capsules · NADAC explanation codes

All 2 NDCs

• 59148-0053-16 · Otsuka America Pharmaceutical, Inc · $26.63535 per EA · eff. 2026-09-23 filed
• 64597-0301-60 · not listed as a package in the FDA directory · $26.63535 per EA · eff. 2026-09-23 filed

Compared with its class

The middle of its 2 NDCs’ NADAC prices is $26.63535 per EA filed.

Of the 43 other products in FDA’s Antiarrhythmic class priced per EA, 0 have a higher middle NADAC price and 43 a lower one. The one in the middle is MEXILETINE 250 MG CAPSULE, at $0.38721 per EA filed (eff. 2026-09-23).

Of the 46 other products in FDA’s Sigma-1 Agonist class priced per EA, 0 have a higher middle NADAC price and 46 a lower one. The one in the middle is DAYTIME COLD-FLU RELIEF SFTGL, at $0.13116 per EA filed (eff. 2026-09-23).

Of the 46 other products in FDA’s Uncompetitive N-methyl-D-aspartate Receptor Antagonist class priced per EA, 0 have a higher middle NADAC price and 46 a lower one. The one in the middle is DAYTIME COLD-FLU RELIEF SFTGL, at $0.13116 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

How the class comparison works

What Medicare paid

Medicare Part D paid $805.60 for 30 capsules, at an average of $26.85328 per EA in 2024 (2024-01-01 to 2024-12-31) for “Nuedexta” and “Dextromethorphan HBr/Quinidine”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 158,337 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 Part D spending measures · Which Medicare figure OpenBill compares · How the spread is worked out

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.

• What is your cash price for 30 capsules? Is it lower than what I would pay through my insurance?
• If you have Medicare Part D: what is my plan’s copay or coinsurance for it? The Part D average on this page is not what you pay.
• These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.