DYANAVEL® XR (amphetamine), Quillivant XR® (methylphenidate HCI), and QuilliChew ER® (methylphenidate HCI) are federally controlled substances (CII) because they can be a target for people who abuse prescription medicines or street drugs. DYANAVEL XR, Quillivant XR, and QuilliChew ER have a high chance for abuse and misuse and may lead to substance use problems, including addiction. Keep these medicines in a safe place to prevent abuse and misuse. Selling or giving away these medicines may harm others and is against the law. Your healthcare provider should check you or your child’s risk for abuse, misuse, and addiction before starting treatment with DYANAVEL XR, Quillivant XR, and QuilliChew ER and will monitor you or your child during treatment. Tell your physician if you, your child, or any family members have ever abused or been dependent on alcohol, prescription medicines, or street drugs.