Alcohol & Drug Information
Cannabis
(tetrahydrocannabinol)

 

 

 

 

 

 

 

 

 

 

 

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Terminology

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Classification of Drugs and Alcohol

Street Names:
Marijuana:
  pot, grass, weed, reefer, ganja, joint.

Hashish:  hash.

Hash Oil:  oil, honey oil.

THC:  crystal T.

Description:
Marijuana: 
Flowering tops and leaves of cannabis plant.  Ranges in color from grey-green to greenish brown.  Texture resembles oregano or coarse tea.  Usually contains seeds and stems.  Has strong odor.  Smoked in pipe or hand rolled cigarette.

Hashish:  Dried sticky resin of cannabis plant.  Sold in solid pieces ranging in color from light brown to black.  Texture ranges from dry and hard to soft and crumbly.  Usually crumbled and smoked in pipe or hand rolled cigarette with tobacco or marijuana.  Usual dose ranges from .25 g. to 1 g.  Can be baked into cookies or cakes.

Hash Oil:  Thick greenish black or reddish brown oil obtained by purifying hashish with an organic solvent.  Usually wiped onto cigarette or rubbed into tobacco and smoked.

THC:  Active ingredient in cannabis.  Pure synthetic THC is seldom available on the street.  What is sold as THC is almost always PCP or LSD.

Origin and Medical Uses:
Obtained from the plant cannabis sativa which grows in almost any climate.  THC and other cannabis constituents are being tested for possible use in treatment of glaucoma, asthma, and epilepsy.  At present the only accepted medical use is treatment of nausea and vomiting associated with chemotherapy by a related compound, Nabilone.

Short Term Effects:
Effects of smoking felt within a few minutes and last 2 to 4 hours.  The effects from ingestion appear more gradually and last longer, although the user may feel dull and sluggish for some time afterwards.  Concentration and short term memory markedly impaired.  User feels calm, relaxed, talkative.  Sensory perception seems enhanced, colors brighter, sounds more distinct.  Appetite increases, especially for sweets.  Sense of time and space distorted.  Some users withdraw or experience fearfulness, anxiety, depression.  A few experience panic, terror or paranoia, particularly with larger doses.  Physical effects include impaired coordination and balance, rapid heart beat, red eyes, dry mouth and throat, drowsiness.  Normal doses impair motor skills, especially when used in combination with alcohol, and cannabis use before driving is particularly dangerous.  THC, the active ingredient, has been detected in bodies of fatally injured drivers and pedestrians in Canada and the United States.

Long Term Effects:
Signs of chronic, heavy use may include loss of motivation, as well as difficulties with memory and concentration.  These problems tend to clear when regular use stops.  Respiratory system is damaged by smoking; a single joint of marijuana yields much more tar than a strong cigarette.  Tar in cannabis smoke contains higher amounts of cancer producing agents than tar in tobacco smoke.  Studies suggest that normal development of a baby may be adversely affected by heavy use of cannabis produces by the mother during pregnancy.

Tolerance and Dependence:
Psychological dependence
on cannabis can occur among heavy or regular users.  Withdrawal symptoms include anxiety, nervousness, sleeping problems, sweating and loss of appetite.  Recent research has indicated that tolerance and physical dependence do develop in chronic users.  However, THC is stored in body fats and takes a long time to completely leave the body after use is stopped.  Because of this, it may take a long time for the user to experience physical withdrawal and withdrawal symptoms are mild, often mistaken for a case of the flu.

 

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Sources:

(1).  Straight Facts About Drugs & Drug Abuse, Revised Edition, Health and Welfare Canada, copyright Minister of Supply and Services Canada, 1990

(2).  Drugs and Alcohol Behaviour: An Introduction to Behavioral Pharmacology, Second Edition, by William A. McKim, Memorial University of Newfoundland, Prentice Hall, 1991


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