Understanding Controlled Substances: What is a Schedule 3 or 4 Drug?
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4 min read
According to the U.S. Drug Enforcement Administration (DEA), drugs, substances, and certain chemicals used to make drugs are classified into five distinct schedules based on their medical use, abuse potential, and risk of dependence. This framework helps clarify the differences between controlled substances, such as **what is a schedule 3 or 4 drug** and why they are regulated differently.