Sec. 353.003.  EFFECT OF CHAPTER.  This chapter does not prevent or restrict a physician from:
(1)  treating or prescribing for a patient;  or
(2)  directing or instructing a person under the physician's control or supervision who assists a patient according to a specific direction, order, instruction, or prescription.
Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.