Fungus
Some fungi produce psychotropic (mind-altering) substances. Some people use these fungi recreationally due to their psychedelic properties. These psychedelic mushrooms are often referred as magic mushrooms because of their ability to induce hallucinations. Like any drug, their effect are temporary typically lasting for 4 to 6 hours. Due to their mind-altering effects, many countries have prohibited them. However, scientists are also investigating ways to use "magic mushrooms" as medical applications.