On June 13, 2024, the Centers for Disease Control and Prevention (CDC) released a Health Alert Network (HAN) regarding the U.S. Department of Justice announcement of a federal health care fraud indictment against a large subscription-based telehealth company that provides attention-deficit/hyperactivity disorder (ADHD) treatment to patients ages 18 years and older across the United States. Patients whose care or access to prescription stimulant medications is disrupted, and who seek medication outside of the regulated healthcare system, might significantly increase their risk of overdose due to the prevalence of counterfeit pills in the illegal drug market that could contain unexpected substances, including fentanyl. In addition to concerns about using illegally acquired stimulant medications, untreated ADHD is associated with adverse outcomes, including social and emotional impairment, increased risk of drug or alcohol use disorder, unintentional injuries, such as motor vehicle crashes, and suicide. Health officials and healthcare providers may need to assist affected patients seeking treatment for ADHD and should communicate overdose risks associated with the current illegal drug market as well as provide overdose prevention education and mental health support. More information is available.