Which of the following is NOT an example of a Schedule III drug?

Methamphetamine is not classified as a Schedule III drug; it falls under Schedule II. Schedule III drugs are those that have a moderate to low potential for physical and psychological dependence compared to Schedule I and II substances. The examples listed as Schedule III drugs include anabolic steroids, certain barbiturates, and ketamine, all of which have specific medical uses but also the potential for abuse and dependence. Anabolic steroids are often used for hormone replacement therapy or for muscle growth, while ketamine can be used as an anesthetic. Barbiturates, although primarily known for their potential for abuse, are still categorized as Schedule III under certain contexts. Understanding the classification of these substances is crucial for proper handling and counseling regarding their use and risks in a clinical setting.