THC-A, or tetrahydrocannabinolic acid, is a natural compound found in raw, unheated cannabis. It’s the non-psychoactive precursor to THC — meaning it won’t get you high on its own. Before cannabis is exposed to heat (like through smoking, vaping, or cooking), it mostly contains THC-A, not THC.

When THC-A is heated, it goes through a process called decarboxylation, where it transforms into THC — the compound responsible for the high we typically associate with cannabis. That means raw cannabis or THC-A products that have been heated can offer the benefits of the plant legally, even in illegal states.

Early research suggests THC-A may have therapeutic properties like reducing inflammation, easing nausea, and offering neuroprotective effects. Because of this, many people use THC-A for wellness purposes — whether it’s through raw flower, tinctures, or concentrates — enjoying the plant’s potential without the psychoactive effects.