Montana (MT) — What’s Legal

Checked Oct 13, 2025 • This is a parent-friendly summary, not legal advice.

Tianeptine: Not specifically scheduled statewide (as of 2024–2025).
Phenibut: Not scheduled. (Not a lawful dietary ingredient per FDA.)
Kratom: No statewide ban. 2025 bill to set 21+ and product limits died (so far).
Nitrous oxide / inhalants: Misuse illegal. MCA § 45-9-121 criminalizes inhaling/possessing “toxic substances” for intoxication.
THC / Cannabis: Adult-use legal. Voters approved I-190 (2020); adult sales/possession allowed.
Salvia divinorum / Salvinorin A: No explicit statewide listing found in Schedule I hallucinogens (not enumerated in code list reviewed).
Amanita muscaria: Not scheduled.
“Mad honey”: No MT-specific ban; treat as food hazard (grayanotoxins).

Parent tip: “Natural” or “hemp-derived” labels can still mean potent drugs. Lock up edibles and keep candy-style packs away from kids.