Marijuana contains more than 100 cannabinoids along with terpenes, flavonoids, and other plant compounds that shape how a product smells, tastes, and feels. THC (tetrahydrocannabinol) is the main psychoactive compound, CBD (cannabidiol) is non-intoxicating, and terpenes are the aromatic oils behind each cultivar's scent. Together these molecules determine potency, flavor, and much of the difference people notice between one product and another.
Minor Cannabinoids: Benefits and Uses
What are the main chemical compounds in marijuana?
Cannabinoids: the active compounds
Cannabinoids are the compounds that interact with the body's endocannabinoid system, a network of receptors involved in mood, appetite, memory, and pain signaling. THC binds CB1 receptors in the brain and produces intoxication, while CBD interacts indirectly and does not cause a high. Researchers have identified well over 100 distinct cannabinoids in the plant, though only a handful appear in meaningful concentrations.
What Does THC and CBD Stand For? Full Names Explained
Terpenes: the aroma compounds
Terpenes are volatile hydrocarbons that give cannabis its smell and flavor, and they are the same class of molecules found in citrus, pine, lavender, and black pepper. Common examples include myrcene, limonene, pinene, linalool, caryophyllene, and terpinolene. Growers and consumers often use these profiles to predict whether a cultivar will feel uplifting, calm, or somewhere in between.
Flavonoids and other plant compounds
Flavonoids such as cannflavin A and cannflavin B contribute color and taste, and some are studied for anti-inflammatory activity. Cannabis also contains phenolic amides, fatty acids, sterols, and trace minerals. These compounds rarely drive intoxication on their own, but they add to the overall profile of a flower or extract.
How do THC and CBD differ?
THC is psychoactive and intoxicating; CBD is not intoxicating at typical doses and is often used for calm and recovery. THC content in legal flower commonly ranges from roughly 15% to 30%, while CBD-dominant products may show 10% to 20% CBD or more. Many products combine both, and the ratio matters more than the total number for most consumers.
What are the minor cannabinoids?
Minor cannabinoids appear at low levels in the plant but are increasingly isolated and sold on their own. CBG (cannabigerol) is often called the "mother cannabinoid" because it is the precursor other cannabinoids are built from. CBN (cannabinol) forms as THC degrades, CBC (cannabichromene) is non-intoxicating, and THCV (tetrahydrocannabivarin) is studied for appetite and energy effects at higher doses. Marketing claims for these compounds often outrun the current research, so treat them as emerging rather than proven.
What is the entourage effect?
The entourage effect is the theory that cannabinoids, terpenes, and flavonoids work together and produce effects different from any single isolated compound. A full-spectrum extract keeps that wider chemistry, while an isolate contains one purified cannabinoid. Evidence for the effect is still developing, but many consumers report that whole-plant products feel different from isolates at similar THC doses.
What do THC percentages on a label mean?
Raw cannabis mostly contains THCA, the acidic form that is not intoxicating until it is heated through smoking, vaping, or baking, a process called decarboxylation. Labels typically list total THC, which combines THC and the THC that THCA becomes when heated. A flower labeled 25% total THC delivers roughly 250 mg of THC per gram, so serving size matters as much as the percentage.
Key takeaways
- Cannabinoids such as THC and CBD drive the primary effects.
- Terpenes shape aroma, flavor, and much of a cultivar's character.
- Flavonoids and minor cannabinoids add complexity but are less studied.
- Total THC on a label reflects THCA converted at high heat.