Schedule 1 drugs are substances that the U.S. government classifies as having a high potential for abuse and no accepted medical use. This category includes drugs like heroin, LSD, and ecstasy. Because of their potential for addiction and harm, these substances are strictly regulated and illegal to manufacture, distribute, or possess. The classification of drugs into schedules is part of the Controlled Substances Act, which aims to prevent drug abuse and protect public health. Schedule 1 drugs are considered the most dangerous, and research on them is heavily restricted, making it difficult to study their effects and potential medical benefits.