Cannabis is a drug that is smoked.   It is also taken by mouth .  It comes from the hemp plant.
 
 

    Possible effects of using cannabis are loss of appetite, impaired memory, concentration,  and knowledge retention, and loss of coordination.  You also have more vivid sense of sight, taste, small, and hearing.  Stronger doses cause fluctuating (changing constantly) emotions and thoughts that are in bits and pieces.  A person may become disoriented.  Cannabis may cause irritation to the lungs, may cause cancer, may irritate your respiratory system, may cause severe mental disorders and a temporary feeling of happiness.
 
 

    If you take an overdose of cannabis, you will have symptoms that are fatigue (temporary decrease of ability to function) lack or coordination, psychosis (any severe mental disorder), and paranoia (an irrational distrust).  If you try to withdraw, you may get some of the same symptoms.  These symptoms are hyperactivity, less appetite, and inability to sleep.
 
 

    Indications that someone has misused cannabis are animated behavior, loud talking, followed by sleepiness, dilated pupils, bloodshot eyes, loss of coordination, eyes not giving the correct information to the brain, and having trouble seeing.