SS/SB 1605 - This act makes 7-hydroxymitragynine (7-OH) in amounts concentrated at a level above 1,000 parts per million on a dry-weight basis a Schedule I controlled substance. This provision is substantially similar to HB 1614 (2026). Additionally, this act prohibits the preparation, distribution, advertisement, sale, or offering for sale of a kratom product that: (1) is adulterated; (2) is sold to a person under 21 years of age; (3) contains 7-hydroxymitragynine concentrated at a level above 1,000 parts per million on a dry-weight basis; (4) mimics candy or is appealing to children; or (5) is combustible or intended for vaporization. Kratom products shall contain specified labels that include disclaimers. A person who violates this provision will be deemed to have engaged in an unlawful practice in violation of the state's Merchandising Practices Act. Finally, it shall be an infraction for a person to sell a kratom product to a person under 21 years of age, as described in the act. These provisions are substantially similar to SCS/SB 927 (2026). SARAH HASKINS

2026 Regular Session Introduced by Mike Henderson

SB 1605 criminalizes kratom products containing high levels of 7-hydroxymitragynine, reclassifying them as Schedule I drugs in Missouri and barring legal sales.

Informal Calendar S Bills for Perfection

Legislative bill overview

SB 1605 proposes to classify 7-hydroxymitragynine (the primary active alkaloid in kratom) as a Schedule I controlled substance in Missouri when present in certain concentrations. This would make possession and sale of kratom products exceeding the specified threshold illegal, subjecting violators to criminal penalties.

Why is this important

Kratom is a plant-derived product currently legal in Missouri and most U.S. states, with an estimated millions of users who consume it for pain management, opioid withdrawal symptom relief, and other purposes. Criminalization would abruptly eliminate legal access, potentially redirect users toward more dangerous substances, and create enforcement challenges given kratom's widespread availability in smoke shops and online retailers.

Potential points of contention

Public health approach: Proponents argue Schedule I status prevents potential abuse; opponents contend this restricts access for people using kratom as a legal alternative to opioids without strong evidence of widespread harm

Enforcement feasibility: The bill's threshold-based approach creates practical challenges for retailers and law enforcement in determining compliance, particularly given kratom's natural alkaloid variability

Federalism and consistency: Missouri would diverge from most states that permit kratom sales, creating interstate commerce complications and consumer confusion about legality