Which of the following is a common Schedule I drug?

Schedule I drugs are classified as substances that have a high potential for abuse and no accepted medical use in the United States. They are considered the most dangerous drugs with severe restrictions on their use and legal distribution. Heroin is classified as a Schedule I substance because it meets these criteria. It has a high potential for addiction and does not have any acceptable medical applications, making it illegal to manufacture, distribute, or possess.

In contrast, codeine and oxycodone are classified as Schedule II drugs, which means they do have accepted medical uses but also come with a high potential for abuse. Ritalin, used primarily for ADHD management, is classified as a Schedule II drug as well, given its medical application and potential for misuse. Understanding these classifications is crucial for law enforcement and health professionals in addressing substance abuse and its related challenges.