Controlled Substances - As enacted, adds tianeptine and any salt, sulfate, free acid, or other preparation of tianeptine, and any salt, sulfate, free acid, compound, derivative, precursor, or preparation thereof that is substantially chemically equivalent or identical with tianeptine, as a schedule II controlled substance; specifies that a violation of the offense of knowingly possessing or casually exchanging a controlled substance (unless the substance was obtained directly from, or pursuant to, a valid prescription or order of a practitioner while acting in the course of professional practice), will be a Class A misdemeanor with respect to a person knowingly possessing or casually exchanging, tianeptine and any salt, sulfate, free acid, or other preparation of tianeptine and any salt, sulfate, free acid, compound, derivative, precursor, or other preparation thereof that is substantially chemically equivalent or identical with tianeptine. - Amends TCA Title 39, Chapter 17, Part 4.