KOSELUGO® (selumetinib)

Get to know Koselugo. The content is for informational purposes only and is not intended to be a substitute for medical advice. 

This page is not intended to discuss safety issues or report side effects associated with Alexion and/or AstraZeneca treatments, or any other treatments. You may report side effects to AstraZeneca at 1-800-236-9933 or at https://us-aereporting.astrazeneca.com or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 

Please see the links below or visit Koselugo.com for full Important Safety Information and Prescribing Information including Patient Information and Instructions for Use. 

This content is intended for US residents only. 
KOSELUGO is a registered trademark of the AstraZeneca group of companies. 
ALEXION and the Alexion logo are registered trademarks of Alexion 
Pharmaceuticals, Inc. ©2025, Alexion Pharmaceuticals, Inc. All rights reserved. 

US/KOS-NF1/1181 V1 12/2025