Schedule I controlled substances are characterized by what main trait?

Schedule I controlled substances are defined by their high potential for abuse and the fact that they have no accepted medical use in the United States. This classification indicates that these substances are considered to be the most dangerous and carry significant risks, leading to potential severe psychological or physical dependence. Examples of Schedule I substances include heroin, LSD, and cannabis (at the federal level), which are all recognized for their high abuse potential and lack of recognized therapeutic applications.

In contrast, substances with low potential for abuse or those with accepted medical uses fall into different schedules, such as Schedule II or III, where they are recognized as having medical benefits and are regulated accordingly. This classification system is important for the medical community and law enforcement to manage the distribution and use of these substances effectively.