THCA vape carts are small cartridges filled with oil made from THCA, a natural compound found in cannabis. On their own, THCA carts do not cause a “high,” but when you heat them with a vape pen, THCA turns into THC, which gives the well-known relaxing and uplifting effects. Many people like THCA vape carts because they are easy to use, discreet, and work quickly. Just attach the...