THC vs. CBD: How the Two Main Cannabinoids Actually Differ

THC (tetrahydrocannabinol) is the primary psychoactive compound in cannabis. It's what produces the intoxicating "high," and it works by binding to CB1 receptors concentrated in the brain and central nervous system. A higher THC percentage means more potential intensity, not necessarily more of any particular effect: two 25% THC strains can feel completely different from each other.

CBD (cannabidiol) is non-intoxicating (it doesn't produce a high on its own) and is often sought for relaxation and general wellness. It interacts with the endocannabinoid system differently than THC, partly by modulating CB1 receptors rather than activating them directly, which is part of why CBD can actually soften some of THC's more intense effects when the two are taken together.

Ratios matter more than percentages

A strain's THC:CBD ratio is often a better guide than either number in isolation. THC-dominant strains (most common flower) produce a stronger high. Balanced strains (roughly equal THC and CBD) tend to produce a milder, more clear-headed experience. CBD-dominant strains produce little to no intoxication at all. If you want the plant's effects without much psychoactivity, strains tagged high-CBD on Canopy are the right place to start.