IAHSS Basic Officer Certification Practice Exam 2026 – Complete Study Guide

Schedule IV substances are categorized under the Controlled Substances Act and are considered to have a lower potential for abuse relative to substances in higher schedules. This classification reflects their medical utility and tolerable risk for dependence.

In this context, the correct answer includes Darvon (propoxyphene), Valium (diazepam), and Xanax (alprazolam). These medications are used for various medical purposes, such as pain relief, anxiety management, and muscle relaxation, and they exhibit a recognizable therapeutic effect with a lower risk of severe abuse compared to higher schedule substances.

Heroin, LSD, and marijuana, found in the incorrect example, are substances with a higher potential for abuse and significant illegal use. Similarly, morphine and codeine are narcotics classified in higher schedules due to their potential for addiction. The inclusion of synthetic opioids like Vicodin and OxyContin also places them in categories with higher abuse potential, especially given the ongoing opioid crisis.

Thus, the medications listed in the correct option are accurately defined as Schedule IV substances based on their therapeutic applications and lower risk of dependence.