THCA, or tetrahydrocannabinolic acid, is a cannabis compound that is beginning to demonstrate immense therapeutic potential despite the infancy of its research. You’ve heard of THC, and while they may sound similar, THCA actually has very different properties. Unlike THC, THCA is a non-psychoactive cannabinoid found in raw and live cannabis. As the plant dries, THCA slowly converts to THC. Heat expedites this conversion in a process known as decarboxylation, a fancy word that describes what happens when you smoke or vaporize flower.