Prop 65 Notices

Prop 65 notice 2023-01360: KOS Naturals LLC

Environmental Research Center, Inc. filed this California Prop 65 60-day notice on May 18, 2023. It names KOS Naturals LLC and KOS, Inc. and alleges exposure to Perfluorooctanoic Acid (PFOA) from Dietary supplements.

The violations below are alleged in a 60-day notice. They are not proven. A 60-day notice is not a lawsuit and not a finding of liability.

AG number
2023-01360
Date filed
Noticing party
Plaintiff attorney
Environmental Research Center
Alleged violators
Chemicals
Source or product
Dietary supplements
Official notice
Notice PDF at oag.ca.gov
Official record
Attorney General record for 2023-01360
Last checked
November 11, 2026

What happened after this notice

Outcomes for this notice have not been checked yet. A settlement is not an admission and not a finding that anyone broke the law.

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Other notices naming KOS Naturals LLC

  • KOS Naturals, LLC and 2 more: Lead in KOS show me the greens super tasty veggie blend
    Notice 2024-02178, filed 2024-05-31 by Clean Product Advocates, LLC
  • KOS Naturals, LLC and 1 more: Lead and lead compounds in KOS, Organic Maca Root Powder, UPC#850000503489, KOS, Organic Moringa Powder, UPC#850015510854
    Notice 2024-01688, filed 2024-05-03 by CalSafe Research Center, Inc.
  • Kos Naturals, LLC and 1 more: Lead in Kos Organic Maca Root Powder
    Notice 2024-00893, filed 2024-03-04 by Environmental Health Advocates, Inc.
  • KOS Naturals LLC and 1 more: Perfluorooctanoic Acid (PFOA) in Dietary supplements
    Notice 2023-01127, filed 2023-04-27 by Environmental Research Center, Inc.
  • KOS Naturals LLC and 1 more: Lead and lead compounds, Mercury and mercury compounds in Dietary supplements
    Notice 2022-02786, filed 2022-11-18 by Environmental Research Center, Inc.

Recent notices filed by Environmental Research Center, Inc.

  • Steuben Foods, Incorporated: Perfluorooctanoic Acid (PFOA) in Kiki Milk Unsweetened Organic Plant-Based Milk, Kiki Milk Chocolate Organic Plant-Based Milk
    Notice 2026-05243, filed 2026-11-06 by Environmental Research Center, Inc.
  • SF Markets, LLC: Perfluorooctanoic Acid (PFOA) in Kiki Milk Unsweetened Organic Plant-Based Milk, Kiki Milk Chocolate Organic Plant-Based Milk
    Notice 2026-05242, filed 2026-11-06 by Environmental Research Center, Inc.
  • Walmart Inc.: Perfluorooctanoic Acid (PFOA) in Ripple Coffee with Other Natural Flavor Protein Shake
    Notice 2026-05241, filed 2026-11-06 by Environmental Research Center, Inc.
  • SF Markets, LLC: Perfluorooctanoic Acid (PFOA) in Ripple Kids Plant-Based Milk Unsweetened Original
    Notice 2026-05240, filed 2026-11-06 by Environmental Research Center, Inc.
  • DAS Labs LLC, individually and dba Bucked Up and 1 more: Lead and lead compounds in Babe Boost Black Cherry Bucked Up Natural Flavors
    Notice 2026-05239, filed 2026-11-06 by Environmental Research Center, Inc.