Marijuana is a green, brown, or gray mixture of dried, shredded leaves, stems, seeds, and flowers of the hemp plant (Cannabis sativa).

Cannabis is a term that refers to marijuana and other drugs made from the same plant. Other forms of cannabis include sinsemilla, hashish, and hash oil. All forms of cannabis are mind-altering (psychoactive) drugs.

Marijuana is usually smoked as a cigarette (called a joint) or in a pipe or bong. Marijuana has also appeared in blunts, which are cigars that have been emptied of tobacco and refilled with marijuana, sometimes in combination with another drug, such as crack. It can also be mixed into foods or used to brew a tea. The main active chemical in marijuana is THC (delta-9-tetrahydrocannabinol).

Common Names:

  • Cannabis
  • Marijuana
  • Pot

Street Names:

  • Ganja
  • Grass
  • Mary Jane
  • Reefer
  • Weed


Cannabis has psychoactive and physiological effects when consumed. The minimum amount of THC required to have a perceptible psychoactive effect is about 10 micrograms per kilogram of body weight. Aside from a subjective change in perception and, most notably, mood, the most common short-term physical and neurological effects include increased heart rate, lowered blood pressure, impairment of short-term and working memory, psychomotor coordination and concentration.. Short-term effects of marijuana use include problems with memory and learning, distorted perception, difficulty in thinking and problem solving, loss of coordination, increased heart rate, and anxiety.Long-term effects are less clear.

Withdrawal Symptoms:

Symptoms of withdrawal with marijuana range from mood-based symptoms such as irritability, anger, and depression, to physical symptoms like tension, stomach pain, insomnia, and decreases in appetite.

Substance Classification:


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