MS HB1553

Prohibits sale of kratom products to persons under 21 years old and requires age-verification systems for online retailers.

Restricts kratom products containing more than 2% 7-hydroxymitragynine in alkaloid composition and bans products with synthesized or semi-synthesized alkaloids.

Requires kratom products to comply with FDA good manufacturing practices for dietary supplements and mandates specific label warnings including age restrictions, medication interactions, habit-forming potential, and alkaloid content declarations.

Imposes a 5% excise tax on retail sales of kratom products in addition to other applicable taxes.

Establishes civil penalties ranging from $1,000 for first offense to $5,000-$20,000 fines plus three-year sales prohibition for third and subsequent violations, and prohibits local governments from enacting stricter kratom regulations.