How are "controlled substances" categorized in Missouri?

Controlled substances in Missouri are categorized into schedules based on their medical use, potential for abuse, and the risk of dependence. This scheduling system is aligned with both state and federal laws, reflecting a structured approach to regulating drugs and substances that have the potential for illegal use and health risks.

The schedules rank substances from Schedule I, which are deemed to have the highest potential for abuse and no accepted medical use (such as heroin and LSD), to Schedule V, which have a lower potential for abuse and are used clinically (like some cough preparations). This classification is critical for law enforcement and public health as it helps delineate which substances can be legally prescribed and distributed, ensuring that those with legitimate medical needs can access necessary medications while also preventing misuse and trafficking.

The other methods suggested, such as personal preference, societal influence, demographic factors, or pharmacy availability, do not form the basis for the legal categorization of controlled substances, making them less relevant in this context.