Sec. 481.037. CARISOPRODOL. Schedule IV includes carisoprodol. Added by Acts 2009, 81st Leg., R.S., Ch. 774 (S.B. 904), Sec. 4, eff. June 19, 2009. SUBCHAPTER C. REGULATION OF MANUFACTURE, DISTRIBUTION, AND DISPENSATION OF CONTROLLED SUBSTANCES, CHEMICAL PRECURSORS, AND CHEMICAL LABORATORY APPARATUS