Which term refers to drugs regulated due to potential for abuse?

• A. Schedule I
• B. Drug standards
• C. Controlled substances
• D. Opiates

Answer: (C)

Drugs regulated due to their potential for abuse are called controlled substances. This term covers all substances whose manufacture, distribution, and use are tightly overseen to prevent misuse and harm, often with a scheduling system that ranks abuse risk and medical utility. For example, many prescription opioids and other habit-forming drugs fall into this category and require formal controls, records, and restricted dispensing. Schedule I, while part of this system, represents a very narrow group with the highest abuse potential and no accepted medical use, so it’s not the general term. Opiates are a class that can be controlled, but the word itself doesn’t describe the overarching regulatory category. Drug standards refer to quality and purity, not the regulatory status related to abuse potential.