LIOTHYRONINE SOD 25 MCG TAB

What it is

LIOTHYRONINE SOD 25 MCG TAB is how the CMS NADAC file names this product. The FDA NDC Directory lists it as liothyronine sodium.

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

FDA lists 8 labelers (the companies named on the label) for its NDCs, among them Teva Pharmaceuticals USA, Inc., Northstar Rx LLC and SIGMAPHARM LABORATORIES, LLC.

FDA’s Established Pharmacologic Class for it is l-Triiodothyronine.

The NADAC file of 2026-10-14 prices it under 10 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 $8.82 for 30 tablets (30 × $0.29408 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 codes for it: 1, calculated from the most recently completed pharmacy survey; 6, the CMS Covered Outpatient Drug Product File S/I/N drug category was not applied when grouping drugs for the calculation.

What NADAC measures · Why 30 tablets · NADAC explanation codes

The 8 labelers

Other strengths, forms and brands

7 other products in the NADAC file share the FDA nonproprietary name liothyronine sodium with LIOTHYRONINE SOD 25 MCG TAB.

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 10 NDCs’ NADAC prices is $0.29408 per EA filed.

Of the 17 other products in FDA’s l-Triiodothyronine class priced per EA, 14 have a higher middle NADAC price and 2 a lower one; 1 has the same. The one in the middle is CYTOMEL 25 MCG TABLET, at $0.53303 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 $12.59 for 30 tablets, at an average of $0.41962 per EA in 2024 (2024-01-01 to 2024-12-31) for “Liothyronine Sodium*” and “Liothyronine Sodium”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 748,503 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 tablets? 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.