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Active ingredient

Liothyronine

51 finished FDA listings contain Liothyronine as their only active ingredient; 61 combination products also contain it.

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FDA NDC Directory

Ingredient names as written by FDA
LIOTHYRONINE, LIOTHYRONINE SODIUM
Dosage forms
Injection, Solution, Tablet
Routes
Intravenous, Oral
Manufacturers / labelers
19
Strengths listed
10 ug/ml · 25 ug/1 · 5 ug/1 · 50 ug/1
Brand names in FDA listings
Cytomel, Liomny

RxNorm (National Library of Medicine)

Ingredient concept RxCUI 10814

Drugs@FDA applications

Linked only where the FDA listing’s application number matches Drugs@FDA exactly. A listing in the NDC Directory does not by itself mean FDA approval.

ApplicationSponsorOriginal approvalListings
NDA 010379KING PHARMS1956-05-086
ANDA 076923XGEN PHARMS2005-08-171
ANDA 090097DR REDDYS LABS SA2009-03-204
ANDA 200295SIGMAPHARM LABS LLC2012-11-2917
ANDA 091382SUN PHARM2016-04-204
ANDA 211510TEVA PHARMS USA2018-10-263
ANDA 214803ZYDUS LIFESCIENCES2021-01-2213
ANDA 218070BIOCON PHARMA2024-02-063

Official labeling on DailyMed

Showing the 12 most recent of 27 labels.

Sources: FDA NDC Directory (2026-09-29), RxNorm, Drugs@FDA, DailyMed. Each source’s facts are shown separately as published.