THC is the component in cannabis that is primarily responsible for its intoxicating, psychoactive effects.

• A cannabis plant’s THC content is expressed as mg/g or as a percentage of mg per gram. This is often referred to as “potency.”
• THC is intoxicating and can produce a variety of intended effects, but consuming too much or choosing a product with a high potency potential can produce harmful or negative effects.
• THC content is indicated on the packaging of any cannabis product sold on OCS.ca.
• THC ranges shown on our product pages are provided by cannabis producers and may differ from ranges specified on the actual packaging.

Of the more than 100 cannabinoids in the cannabis plant, tetrahydrocannabinol (THC) is the one principally responsible for the psychoactive and intoxicating effects of cannabis consumption.

Live cannabis plants contain tetrahydrocannabinolic acid (THCA), the non-active version of this compound. When cannabis is decarboxylated through heating to a high temperature, drying or curing, the acid molecule (the “A” in THCA) drops off, and the THC is activated. This results in the effects we associate with consuming THC. It also means that cannabis in its fresh form is not yet active with THC.

How THC Works

THC interacts with the body’s endocannabinoid system (ECS). Studies suggest this system plays a role in regulating stress recovery, protecting our nervous system, activating our immune system response and regulating our homeostatic balance (our overall state of optimal health, function and stability).

Put simply, your ECS is made up of two things:

1. Cannabinoid receptors, present in nearly every region of your central nervous system and brain, as well as many other areas of the body, including your immune system; and
2. Cannabinoids that you naturally produce (called endocannabinoids).

Your natural endocannabinoids fit into your ECS receptors like a key in a lock and help carry messages from cell to cell. THC works the same way, temporarily replacing your own endocannabinoids, but with different effects. These may include:

• the release of dopamine, resulting in feelings of relaxation;
• a physical response, such as reduced inflammation or an increase in hunger; and
• effects on various regions of the brain, including the hippocampus (memory), the frontal cortex (thinking and decision-making) and the cerebellum (physical movement and coordination).