KOSELUGO vs MEKINIST

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 13, 2026·How we rate

Possible drug interaction. KOSELUGO and MEKINIST 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	MEKINIST
Rating	70/100	70/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	SELUMETINIB SULFATE	TRAMETINIB DIMETHYL SULFOXIDE
Manufacturer	Astrazeneca	Novartis
Dosage forms	Capsule, Powder	Powder, Tablet
Drug class	Kinase Inhibitor	Kinase Inhibitor
Boxed warning	None	None
Treats	Neurofibromatosis 1	Non-Small-Cell Lung Carcinoma, Melanoma

koselugo mekinist

Rating

70/100

Pharmacy pays

—

Type

Active ingredient

SELUMETINIB SULFATE

TRAMETINIB DIMETHYL SULFOXIDE

Manufacturer

Astrazeneca

Novartis

Dosage forms

Capsule, Powder

Powder, Tablet

Drug class

Kinase Inhibitor

Boxed warning

None

Treats

Neurofibromatosis 1

Non-Small-Cell Lung Carcinoma, Melanoma

Frequently asked questions

Which is better-rated, Koselugo or Mekinist?

Koselugo and Mekinist are tied at 3.5 out of 5 by our independent rating.

What is the difference between Koselugo and Mekinist?

Koselugo contains Selumetinib Sulfate, while Mekinist contains Trametinib Dimethyl Sulfoxide — 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.