In a prosecution under Section 49.031, 49.04, 49.045, 49.05, 49.06, 49.061, 49.065, 49.07, or 49.08, the fact that the defendant is or has been entitled to use the alcohol, controlled substance, drug, dangerous drug, or other substance is not a defense.
Official text of the Texas Penal Code as published by the Texas Legislative Council.