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Synthroid

NDC 0074-4552 · AbbVie Inc.

Generic nameLevothyroxine Sodium

Dosage formTABLET

RouteORAL

Active ingredient(s)LEVOTHYROXINE SODIUM

Strength50 ug/1

Pharmacologic classThyroxine [CS], l-Thyroxine [EPC]

Marketing categoryNDA

Packages

0074-4552-11 — 10 BLISTER PACK in 1 BOX, UNIT-DOSE (0074-4552-11) / 10 TABLET in 1 BLISTER PACK

0074-4552-19 — 1000 TABLET in 1 BOTTLE (0074-4552-19)

0074-4552-72 — 2 BLISTER PACK in 1 CARTON (0074-4552-72) / 7 TABLET in 1 BLISTER PACK

0074-4552-90 — 90 TABLET in 1 BOTTLE (0074-4552-90)

Related Codes

Same active ingredient

FDA lists these products with the same active ingredient.

0074-3727 — Levothyroxine Sodium, 0074-4341 — Levothyroxine Sodium, 0074-5182 — Levothyroxine Sodium, 0074-6594 — Levothyroxine Sodium, 0074-6624 — Levothyroxine Sodium, 0074-7068 — Levothyroxine Sodium, 0074-7069 — Levothyroxine Sodium, 0074-7070 — Levothyroxine Sodium, 0074-7148 — Levothyroxine Sodium, 0074-7149 — Levothyroxine Sodium, 0074-9296 — Levothyroxine Sodium, 0378-1800 — levothyroxine sodium, 0378-1803 — levothyroxine sodium, 0378-1805 — levothyroxine sodium, 0378-1807 — levothyroxine sodium, 0378-1809 — levothyroxine sodium, 0378-1811 — levothyroxine sodium, 0378-1813 — levothyroxine sodium, 0378-1815 — levothyroxine sodium, 0378-1817 — levothyroxine sodium, +547 more

From the FDA National Drug Code Directory, retrieved August 24, 2026. Product listings are submitted by labelers; FDA does not verify them.

Read from: FDA National Drug Code Directory, product.txt and package.txt (accessdata.fda.gov/cder/ndctext.zip) — Snapshot retrieved 2026-08-24, loaded 2026-08-24; CMS Medicare Part B Drug Average Sales Price (ASP) Pricing Files (cms.gov/medicare/payment/part-b-drugs/asp-pricing-files) -- the NDC-HCPCS crosswalk and Part B payment limit files — 2026 Q3 (July 2026 release). All data sources · How to read the labels