a CART – A a cart is a vape cartridge filled with an extract that predominantly contains Tetrahydrocannabinolic acid (a), the non-psychoactive precursor to product. This extract is often favored by users seeking the therapeutic effects of cannabis without intense psychoactivity. Fresh cannabis is first harvested and quickly frozen to preserve the a and prevent it from converting into product. The frozen plant material then undergoes an extraction process—commonly using solvents like CO2 or hydrocarbons—which extracts the cannabinoids while keeping the temperature low enough to avoid decarboxylation (the chemical reaction that converts a to product). The resulting pure a extract is then processed into a viscous oil that can be loaded into vape cartridges.