Which schedule of drugs includes substances with low physical dependence and moderate psychological dependence?

The correct answer is based on the classification of controlled substances established by the Drug Enforcement Administration (DEA). Schedule IV drugs are recognized for their relatively lower potential for abuse compared to substances in higher schedules. This category includes drugs that are considered to have a low potential for physical dependence but can still lead to moderate psychological dependence.

Examples of Schedule IV substances include medications such as certain anti-anxiety medications and sleep aids. These drugs can be prescribed and used safely under medical supervision, as they pose less risk of addiction compared to the drugs found in higher schedules.

In contrast, drugs categorized in higher schedules—like Schedule III (which includes substances with moderate to low physical dependence and high psychological dependence), Schedule II (with high potential for abuse and severe physical or psychological dependence), and Schedule I (which are deemed to have no accepted medical use and a high potential for abuse)—carry greater risks and restrictions. This distinction is essential for understanding the levels of control and regulation surrounding various substances within the legal framework of drug enforcement.