Pharmacy Technician Certification Board Practice Exam

Schedule I substances are categorized as having the highest potential for abuse and have no accepted medical use in the United States. This classification includes drugs such as heroin, LSD, and marijuana (at the federal level). Due to their potential for severe psychological or physical dependence, these substances are highly restricted, and research involving them is heavily regulated. The definition of a Schedule I substance highlights its danger related to abuse potential. Unlike Schedule I, the other schedules (II through IV) include substances that possess accepted medical uses, albeit with varying levels of control and regulation based on their potential for abuse. For example, Schedule II substances, such as opioids, are recognized for medical applications but still carry a high risk of abuse and dependency.