Vyvanse (lisdexamfetamine) is a prescription stimulant commonly prescribed to treat Attention Deficit Hyperactivity Disorder (ADHD) and binge eating disorder. It contains amphetamine, a controlled substance due to its potential for abuse and addiction. As with any medication, Vyvanse should only be used under the supervision of a licensed medical professional who can monitor its effects on the individual's health and ensure it is being used safely and effectively. buy vyvanse online without prescription