Kratom; add to Schedule III of the Uniform Controlled Substances Act.

HB 1121 adds kratom to Schedule III of Mississippi's Controlled Substances Act, classifying it as a regulated controlled substance. This change directly affects Mississippi residents who use, sell, or distribute kratom products, subjecting them to state laws governing possession, sales, and penalties for unauthorized use. Schedule III classification means kratom would require a prescription for medical use and face legal restrictions similar to other substances listed in that schedule. The bill amends Mississippi Code § 41-29-117 to include kratom under Schedule III's provisions, which regulate specific stimulants, depressants, and other substances. This is a concrete policy change in Mississippi's drug law, not a procedural measure.