Sec. 442.003. CONSTRUCTION WITH OTHER LAW. This chapter does not limit the authority of this state or a political subdivision of this state to regulate or prohibit a prescription drug. Added by Acts 2017, 85th Leg., R.S., Ch. 485 (H.B. 2561), Sec. 7(a), eff. September 1, 2017. SUBCHAPTER B. DONATION AND REDISTRIBUTION OF UNUSED PRESCRIPTION DRUGS