What is THCA? THCA, or tetrahydrocannabinolic acid, is a non-psychoactive compound found in raw cannabis plants. It is the precursor to THC, or tetrahydrocannabinol, which is the psychoactive compound that produces the high associated with marijuana. While THC is responsible for the psychoactive effects of marijuana, THCA has its own unique properties and potential therapeutic benefits. THCA is one of many cannabinoids found in the ca… Read more