A cannabinoid is a class of chemical compounds that are found naturally in the cannabis plant (Cannabis sativa). These compounds interact with specific receptors in the human body's endocannabinoid system, producing various physiological and psychoactive effects.

The most well-known and extensively studied cannabinoid is delta-9-tetrahydrocannabinol (THC), which is responsible for the psychoactive properties of cannabis. THC binds to cannabinoid receptors, primarily CB1 receptors, in the brain, leading to the "high" or euphoric sensation commonly associated with marijuana use.

Another prominent cannabinoid is cannabidiol (CBD), which does not produce psychoactive effects like THC. CBD has gained significant attention for its potential therapeutic properties, including its anti-inflammatory, analgesic, and anxiolytic effects. It interacts with both CB1 and CB2 receptors in the body, influencing various physiological processes and potentially providing relief for conditions such as chronic pain, epilepsy, anxiety, and more.

In addition to THC and CBD, there are over 100 other cannabinoids that have been identified in cannabis, albeit in smaller quantities. Some examples include cannabigerol (CBG), cannabinol (CBN), and tetrahydrocannabivarin (THCV). These cannabinoids may contribute to the overall effects and therapeutic potential of cannabis, although further research is needed to fully understand their individual properties and interactions within the body.