LENVIMA vs SYNTHROID

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. LENVIMA and SYNTHROID are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	LENVIMA	SYNTHROID
Rating	New	70/100
Pharmacy pays	—	~$1.83 /30
Type	RX	RX
Active ingredient	LENVATINIB MESYLATE	LEVOTHYROXINE SODIUM
Manufacturer	Eisai Inc	Abbvie
Dosage forms	Capsule, Kit	Tablet
Drug class	—	L-Thyroxine
Boxed warning	None	Boxed warning
Half-life	—	about 6 to 7 days in adults with normal thyroid function
Treats	Renal Cell Carcinoma, Thyroid Neoplasms	Goiter, Myxedema, Thyroid Neoplasms

lenvima synthroid

Rating

New

70/100

Pharmacy pays

—

~$1.83 /30

Type

Active ingredient

LENVATINIB MESYLATE

LEVOTHYROXINE SODIUM

Manufacturer

Eisai Inc

Abbvie

Dosage forms

Capsule, Kit

Tablet

Drug class

—

L-Thyroxine

Boxed warning

None

Boxed warning

Half-life

—

about 6 to 7 days in adults with normal thyroid function

Treats

Renal Cell Carcinoma, Thyroid Neoplasms

Goiter, Myxedema, Thyroid Neoplasms

Frequently asked questions

What is the difference between Lenvima and Synthroid?

Lenvima contains Lenvatinib Mesylate, while Synthroid contains Levothyroxine Sodium — they have different active ingredients.

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.