In this subchapter:
(1) "Anaphylaxis" means a sudden, severe, and potentially life-threatening allergic reaction that occurs when a person is exposed to an allergen.
(2) "Epinephrine auto-injector" means a disposable medical drug delivery device that contains a premeasured single dose of epinephrine intended for use to treat anaphylaxis.
(2-a) "Epinephrine delivery system" means a medical delivery device approved by the United States Food and Drug Administration that delivers a dose of epinephrine intended for use to treat anaphylaxis, including:
(A) an epinephrine auto-injector; and
(B) an epinephrine nasal spray.
(3) "Physician" means a person who holds a license to practice medicine in this state.