Missouri (MO) — What’s Legal

Checked Oct 13, 2025 • Parent-friendly summary (not legal advice).

• Tianeptine: Bill to add to Schedule I moving (HB 2213); verify final status.
• Phenibut: Not scheduled; FDA: not a lawful dietary ingredient.
• Kratom: Regulated (Kratom Consumer Protection Act) — age limits + labeling; 2025 tightening debated.
• Nitrous oxide / inhalants: No statewide N₂O-specific ban; patchwork local rules; MOST brief notes no MO-wide restriction on N₂O itself.
• THC / Cannabis: Adult-use legal (Amendment 3, 2022); program active; tax issues clarified by MO Supreme Court.
• Salvia divinorum / Salvinorin A: Schedule I in MO.
• Amanita muscaria: Not scheduled.
• “Mad honey”: No MO-specific ban; food law + FDA/CDC toxicology applies.