THEO-24 ER 400 MG CAPSULE

What it is

THEO-24 ER 400 MG CAPSULE is how the CMS NADAC file names this product. The FDA NDC Directory lists it as theophylline anhydrous, under the trade name “Theo-24”.

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

The labeler, the company named on the label, is ENDO USA, Inc.

FDA’s Established Pharmacologic Class for it is Methylxanthine.

The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 52244-0400-10.

NADAC classes it in its brand rate-setting class B-ANDA, and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $293.80 for 30 capsules (30 × $9.79324 per EA, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-01-01. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 4, carried forward from the previous file; 6, the CMS Covered Outpatient Drug Product File S/I/N drug category was not applied when grouping drugs for the calculation.

This NDC’s NADAC was carried forward from an earlier file (NADAC explanation code 2 or 4), not newly surveyed: it took effect on 2026-01-01. The file is new; the price is not.

What NADAC measures · Why 30 capsules · NADAC explanation codes · Carried-forward prices

The NDC

• 52244-0400-10 · ENDO USA, Inc. · $9.79324 per EA · eff. 2026-01-01 filed carried forward

Other strengths, forms and brands

5 other products in the NADAC file share the FDA nonproprietary name theophylline anhydrous with THEO-24 ER 400 MG CAPSULE.

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. between 2025-11-19 and 2026-09-23 (4 dates) · 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

Its NADAC price is $9.79324 per EA filed.

Of the 32 other products in FDA’s Methylxanthine class priced per EA, 0 have a higher middle NADAC price and 32 a lower one. The one in the middle is QC STAY AWAKE 200 MG TABLET, at $0.08299 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. 2026-01-01, 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

How the class comparison works

What Medicare paid

We don’t know yet; the card above says why.

Which Medicare figure OpenBill compares · How Part D is matched · How Part B is matched

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?
• These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.