Schedule I substances

Schedule I substances are drugs that are considered to have a high potential for abuse, no accepted medical use in the United States, and a lack of accepted safety for use under medical supervision. Examples include heroin, LSD, and marijuana (at the federal level). These substances are tightly controlled, making it illegal to manufacture, buy, or possess them without special permission. The classification aims to prevent misuse and protect public health, though opinions about some substances, like marijuana, vary regarding their legal and medical status.