There is disclosed a vaporizer apparatus for a compressed tablet formed from a plant source material containing medicinal ingredients of therapeutic efficacy. In an embodiment, the apparatus includes: a holder for a compressed tablet a microprocessor a controlled air flow and a controlled heat source wherein the microprocessor is adapted to control the air flow and the heat source to vaporize the compressed tablet received in the compressed tablet holder at a desired rate. In another embodiment, the vaporizer apparatus includes a carousel for receiving a disc cartridge containing packaged compressed tablets. In still another embodiment, the vaporizer apparatus is adapted to recognize a type of compressed tablet placed into the holder, and to control an air flow and a heat source based on selected therapeutic compounds desired to be released from the recognized type of compressed tablet.