Cannabis, also called marijuana or ganja, is a psychoactive product in the plant Cannabis sativa. Its commonly ingested after it's dried. The commonest parts of the plants employed in ingestion are dried flowers and leaves from the female plants. Permanently of consumption is the resinous form, having a the crystalline trichomes around the flowers leaving.

The psychoactive compound in the plant is called delta-9-tetrahydrocannabinol, higher quality as THC. This compound causes psychoactive and physiological effects when consumed, usually through smoking or ingestion. Common effects include euphoria, laughter, philosophical thinking, increased appreciation for music, heightened sensory awareness, pain alleviation, increased appetite, and reduced nausea. Side effects include coughing, lung problems, possible psychological dependence, panic attacks or anxiety problems, along with the exacerbation of mental illness.