KOSELUGO vs VERZENIO

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 18, 2026·How we rate

Possible drug interaction. KOSELUGO and VERZENIO 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	KOSELUGO	VERZENIO
Rating	70/100	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	SELUMETINIB SULFATE	ABEMACICLIB
Manufacturer	Astrazeneca	Eli Lilly and Co
Dosage forms	Capsule, Powder	Tablet
Drug class	Kinase Inhibitor	Kinase Inhibitor
Boxed warning	None	None
Treats	Neurofibromatosis 1	Breast Neoplasms

koselugo verzenio

Rating

70/100

New

Pharmacy pays

—

Type

Active ingredient

SELUMETINIB SULFATE

ABEMACICLIB

Manufacturer

Astrazeneca

Eli Lilly and Co

Dosage forms

Capsule, Powder

Tablet

Drug class

Kinase Inhibitor

Boxed warning

None

Treats

Neurofibromatosis 1

Breast Neoplasms

Frequently asked questions

What is the difference between Koselugo and Verzenio?

Koselugo contains Selumetinib Sulfate, while Verzenio contains Abemaciclib — 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.