Edaravone injection is used to treat amyotrophic lateral sclerosis (ALS, Lou Gehrig's disease; a condition in which the nerves that control muscle movement slowly die, causing the muscles to shrink and weaken). Edaravone injection is in a class of medications called antioxidants.

Edaravone works by relieving the effects of oxidative stress, which may be related to the death of motor neurons (nerve cells) in people with Amyotrophic Lateral Sclerosis (ALS). Keeping motor neurons healthy may help to preserve muscle function. Edaravone is used to treat amyotrophic lateral sclerosis.