CYTOMEL vs LIOTHYRONINE SODIUM

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Attribute	CYTOMEL	LIOTHYRONINE SODIUM
Rating	New	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	LIOTHYRONINE SODIUM	LIOTHYRONINE SODIUM
Manufacturer	King Pharms LLC	Zydus Lifesciences
Dosage forms	Tablet	Injectable, Tablet
Drug class	L-Triiodothyronine	L-Triiodothyronine
Boxed warning	Boxed warning	Boxed warning
Half-life	about 2-1/2 days (the label's "biological half-life")	about 2-1/2 days (the label's "biological half-life")
Treats	Goiter, Myxedema, Thyroid Neoplasms	Goiter, Myxedema, Thyroid Neoplasms

cytomel liothyronine sodium

Rating

New

Pharmacy pays

—

Type

Active ingredient

LIOTHYRONINE SODIUM

Manufacturer

King Pharms LLC

Zydus Lifesciences

Dosage forms

Tablet

Injectable, Tablet

Drug class

L-Triiodothyronine

Boxed warning

Half-life

about 2-1/2 days (the label's "biological half-life")

Treats

Goiter, Myxedema, Thyroid Neoplasms

Frequently asked questions

What is the difference between Cytomel and Liothyronine Sodium?

Both Cytomel and Liothyronine Sodium share the active ingredient Liothyronine Sodium.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.