THCa EDIBLE- A THCa edible is a type of cannabis-infused food product that contains THCa (tetrahydrocannabinolic acid), the non-psychoactive precursor to THC. THCa is valued for its potential therapeutic benefits without the psychoactive effects typically associated with THC. Fresh cannabis that has not been dried or cured (which prevents the decarboxylation process that converts THCa to THC) is used.