Tex. Health and Safety Code § 483.021: DETERMINATION BY PHARMACIST ON REQUEST TO DISPENSE DRUG.

(a) A pharmacist who is requested to dispense a dangerous drug under a prescription issued by a practitioner shall determine, in the exercise of the pharmacist's professional judgment, that the prescription is a valid prescription. A pharmacist may not dispense a dangerous drug if the pharmacist knows or should have known that the prescription was issued without a valid patient-practitioner relationship.

(b) A pharmacist who is requested to dispense a dangerous drug under a prescription issued by a therapeutic optometrist shall determine, in the exercise of the pharmacist's professional judgment, whether the prescription is for a dangerous drug that a therapeutic optometrist is authorized to prescribe under Section 351.358, Occupations Code.

Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989. Amended by Acts 1991, 72nd Leg., ch. 588, Sec. 27, eff. Sept. 1, 1991; Acts 2001, 77th Leg., ch. 1254, Sec. 12, eff. Sept. 1, 2001; Acts 2001, 77th Leg., ch. 1420, Sec. 14.796, eff. Sept. 1, 2001.