Cannabis sativa Cannabinoids, Hashish Tetrahydrocannabinols

A >tetrahydrocannabinol is one of the active principles of cannabis (constituent of marijuana or hashish from Cannabis sativa) with lower psychoactivity than A -tetrahydrocannabinol. It is a cannabinoid receptor agonist and has (euphoric) sedative and mild PSYCHOTROPIC (hallucinogenic) properties, and ANTIEMETIC activity. A >tetrahydrocannabinol (A -tetrahydrocannabinol) is an active cannabinoid. It is a constituent of marijuana. The active (6aR,10aR)-(-)-trans-form = dronabinol. It is a CANNABINOID RECEPTOR AGONIST and has (euphoric) SEDATIVE and mild PSYCHOTROPIC (hallucinogenic) properties, and ANTIEMETIC activity. 

Cannabinoids are a group of C2i compounds found in the plant species Cannabis sativa. The principal psychoactive cannabinoid is A -tetrahydrocannabinol (THC) (Figure 34-29). THC is typically consumed by smoking marijuana, which is a mixture of crushed leaves, flowers, and sometimes stems from the cannabis plant. Hashish, the dried, resinous... 

Marijuana consists of the leaves and flowering parts of the plant Cannabis sativa and is usually smoked in cigarettes ( joints or reefers ) or pipes or added to food (usually cookies or brownies). Resin from the plant may be dried and compressed into blocks called hashish. Marijuana contains a number of cannabinoids the primary psychoactive one is delta-9-tetrahydrocannabinol (THC). THC is also available in capsule form (dronabinol or Marinol) as an appetite stimulant, used primarily for AIDS-related anorexia, and as treatment for vomiting associated with cancer chemotherapy. 

Cannabinoids are compounds that can be extracted from the cannabis sativa plant (marijuana) or the cannabis indica plant (hashish - Arabic word meaning grass), or produced synthetically, or produced in the body after ingestion and metabolism of cannabis, or even occur naturally within the body or brain (Solowij, 1998). The primary psychoactive cannabinoid is Delta-9-Tetrahydrocannabinol (THC). In this text the drug will most often be labeled THC, but occasionally the other terms will be used, especially in describing specific studies that refer to specific sources of the THC (e.g., marijuana). 

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