Parent's Guide


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21. Cannabis

All forms of cannabis have negative physical and mental effects. Several regularly observed physical effects of cannabis are a substantial increase in the heart rate, bloodshot eyes, a dry mouth and throat, and increased appetite.

Its use may impair or reduce short-term memory and comprehension, alter sense of time and reduce ability to perform tasks requiring concentration and coordination, such as driving a car. Motivation and cognition may be altered, making the acquisition of new information difficult. It can also produce paranoia and psychosis. Because users often inhale the unfiltered smoke deeply and then hold it in their lungs a long time,it is damaging to the lungs and pulmonary system. Marijuana smoke contains more cancer causing agents than tobacco smoke. Long-term users of cannabis may develop psychological dependence and require more of the drug to get the same effect. The drug can become the center of their lives.

What is it called?
What does it look like?
How is it used?
Marijuana Pot, Reefer, Grass, Weed, Dope, Ganja, Mary Jane, or Sinsemilla Like dried parsley, with stems and/or seeds; rolled into cigarettes Smoked or eaten
Tetrahydro-cannabinol THC Soft gelatin capsules Taken orally
Hashish Hash Brown or black cakes or balls Smoked or eaten
Hashish Oil Hash Oil Concentrated syrupy liquid varying in colour from clear to black Smoked-mixed with tobacco


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Drugs Desciptions and Effects

Select a drug from the drop down menu to get more information from National Institute on Drug Abuse at :