The present disclosure relates to a portable vaporizer capable of vaporizing liquid medicament such as herbal oils or therapeutic liquids into a vapor for pulmonary administration to treat a variety of medical conditions, the vaporizer can include a housing having a proximal end and a distal end, wherein the housing including an opening at the proximal end defining a mouth piece, a liquid reservoir disposed in the housing to hold a liquid medicament to be vaporized, and a vaporization unit. The portable vaporizer can dispense metered quantity of vaporized liquid material at the mouthpiece by operation of the vaporization unit, and it can be readily used in the event of a sudden onset of serious medical symptoms such as headaches, chronic pain or anxiety. The portable vaporizer can further include a communication module to communicate with external functional units or networks for recording the dosage history or other functions.
