THCA drinks are beverages infused with tetrahydrocannabinolic acid, a non-psychoactive precursor to THC found in raw cannabis that offers potential wellness benefits like anti-inflammatory relief without the "high" until heated, though many drinks actually use hemp-derived Delta-9 THC for a mild, smoke-free buzz, acting like a fast-acting edible that's quicker than solids, offering relaxation and mood enhancement as an alternative to alcohol.