Which is true regarding Schedule II substances?

Schedule II substances are classified as having a high potential for abuse, which can lead to severe psychological or physical dependence. This classification is part of the Controlled Substances Act in the United States, which categorizes drugs based on their medical use and potential for abuse.

The characteristics of Schedule II substances include their accepted medical use with restrictions and their potential to cause significant harm if misused. For example, medications like opioids, stimulants, and certain barbiturates fall into this category due to their effectiveness but also their risk for addiction and abuse.

The other options do not accurately reflect the nature of Schedule II substances. They are not characterized by a low potential for abuse, nor are they illegal with no medical use, as many Schedule II substances are prescribed for legitimate medical reasons. Additionally, they are not mainly herbal medications; instead, they are often synthetic or derived from substances that are not derived from herbal sources. Understanding these classifications is crucial for recognizing the legal and medical implications of prescribing and handling controlled substances.