Concerta, adderall, ritalin, etc.
http://www.camh.ca/en/science-and-research/institutes-and-centres/institute-for-mental-health-policy-research/ontario-student-drug-use-and-health-survey---osduhs
“This survey provides current and reliable information about the health risk behaviours, attitudes and beliefs of Ontario adolescents, and it tracks changes over time. OSDUHS findings have been widely used by health, education, and government officials in setting health priorities and facilitating preventative policies, programs, and services that address youth needs.”