Mississippi Uniform Controlled Substance Analog Act; create.

HB 1590 creates Mississippi's "Controlled Substance Analog Act," treating substances designed to mimic the effects of Schedule I or II controlled drugs (like synthetic opioids or stimulants) as Schedule I drugs themselves. It makes it illegal to manufacture, distribute, sell, possess with intent to distribute, or advertise such substances as producing effects similar to banned drugs. The bill provides specific evidence for proving "intent for human consumption" (e.g., marketing claims, chemical structure) and aligns penalties with existing Schedule I violations. This directly affects manufacturers, sellers, and marketers of these mimic substances, who now face the same legal consequences as those dealing with traditional Schedule I drugs.