Hi & Welcome to HCM.
Yes, it may be advisable for 
binge eating disorder.
Vyvanse (Dexamphetamine) is a potent 
central nervous system (CNS) stimulant which is thought to work by restoring the balance of certain natural chemicals (neurotransmitters) in the brain. 
Basically it is found to be useful in the treatment of 
Attention Deficit Disorder with Hyperactivity and Narcolepsy (a sleep disorder that causes excessive 
daytime sleepiness & sudden attacks of sleep)
Beside, it may also help to reduce the number of binge eating days so it may be used to treat binge eating disorder.
This medication is not recommended for use for weight loss due to the risk of serious side effects.
Since this medication can be habit-forming. Do not take a larger dose, take it more often, or take it for a longer time than prescribed by your doctor or 
psychiatrist. As a policy matter the prescription of this medication can not be sent through this health care service.
Hope I could answer your query.
Best regards.