Marijuana is a psychoactive drug extracted from the plant Cannabis sativa, or more often, Cannabis sativa.

Common Names: grass, pot, weed
Appearance:Sometimes smoked in a pipe or water pipe, but most often in loosely rolled cigarettes known as "joints." Some users will slice open and hollow out cigars, replacing the tobacco with marijuana, to make what are called "blunts." Marijuana can be brewed into tea or mixed in baked products (cookies or brownies).

Effects: User reaction is heavily influenced by expectations and past experience, and many first-time users feel nothing at all. Effects are generally felt within a few minutes and peak in 10 to 30 minutes. People who use cannabis can feel very happy, giggly and relaxed, but some will feel sick. Using marijuana can affect coordination, concentration and can cause short-term memory loss. Cannabis users can get anxious, panicky and can suffer depression and psychosis (feeling angry all the time). Users may also experience dry mouth and throat and delayed reaction time. Moderate doses tend to induce a sense of well-being and a dreamy state of relaxation that encourages fantasies, renders some users highly suggestible, and distorts perception (making it dangerous to operate machinery, drive a car or boat, or ride a bicycle). Stronger doses prompt more intense and often disturbing reactions including paranoia and hallucinations. Regular use can lead to lung damage and heart disease – the same as with smoking – and this is even worse if you smoke Cannabis with tobacco. Using marijuana can also cause a lack of motivation. This can affect work, school and social life.