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San Mateo County Becomes First Bay Area County to Ban Kratom Sales

Local leaders say unregulated high‑potency products posed an immediate health risk.

Overview

  • The Board of Supervisors, which voted 5–0 on Tuesday, outlawed sales of kratom and its alkaloid 7‑hydroxymitragynine in unincorporated areas of the county.
  • Selling or distributing these products is now a misdemeanor that can bring up to a $1,000 fine and six months in jail, and retailers risk losing tobacco and other county permits.
  • Officials cited FDA warnings about potent 7‑OH products and CDC data showing kratom exposure reports rose 1,200% to 3,434 in 2025, pointing to opioid‑like effects and inconsistent potency in shots, gummies, and tablets sold at smoke shops and gas stations.
  • A dozen speakers urged the county to distinguish whole‑leaf kratom from concentrated extracts, saying the leaf helps some manage chronic pain, but supervisors approved a blanket ban.
  • County leaders said the ordinance fills a regulatory gap while California steps up enforcement and weighs measures such as restricting sales to people under 21, which could later override local rules.