Heroin, LSD, and marijuana are classified under which schedule of drugs?

The correct classification for heroin, LSD, and marijuana is Schedule I. This classification indicates that these substances have a high potential for abuse and have no accepted medical use in treatment in the United States. Additionally, they possess a lack of accepted safety for use under medical supervision, making them the most tightly regulated class of controlled substances.

Heroin is an opioid that is illegal in the U.S. and is known for its high potential for addiction and abuse. LSD (lysergic acid diethylamide) is a hallucinogenic drug, also not accepted for medicinal use due to its unpredictability in effects and potential for misuse. Marijuana, though increasingly legalized for medical and recreational use in many states, remains classified as Schedule I at the federal level, which reflects the ongoing debate about its safety and efficacy in medical treatment.

In contrast, medications classified under Schedule II, Schedule III, or Schedule IV tend to have accepted medical uses and varying potential for abuse, with Schedule II representing drugs with a high potential for severe psychological or physical dependence, and the schedules subsequently decreasing in potential for abuse and increasing in accepted medical use. Therefore, heroin, LSD, and marijuana are appropriately categorized under Schedule I due to their high potential for abuse and lack of accepted medical use