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Home > Proposition 65
Proposition 65

Proposition 65 Background

In 1986, the State of California adopted the Safe Drinking Water and Toxic Enforcement Act (Proposition 65), which applies not only to water quality, but also to consumer goods sold to the California public. Prop 65 requires the State of California to publish and maintain a list of over 850 chemicals, known to the state of California to cause cancer, birth defects or other reproductive harm. The most recent list of chemicals is available at

Prop 65 Frequently Asked Questions

Q) What does Prop 65 mean?
A) Prop 65 means that any product or good that contains substances known to the State of California, requires an additional warning if being sold to the California public.

Q) Are Prop 65 items made of poor quality?
A) Many of the substances on the Prop 65 list are naturally occurring in the environment. Therefore, it is possible for a nutritional supplement to have naturally occurring traces of these substances. Each vendor still undergoes their strict quality testing to ensure a quality product.

Q) Does Prop 65 only pertain to Vitamins and Natural Supplements?
A) No. Prop 65 pertains to many other items such as food, toys, ink, jewelry, and other personal care products. It even pertains to certain environmental exposures in certain areas. Since 2013, as a result of litigation to determine their status, dietary supplements are categorized in California as foods for purposes of Proposition 65.

Here is an example of what the Prop 65 warning label:

Prop 65 Warning Label

Download Designs for Health's White Paper Response by clicking the PDF icon below:

Design for Health Prop 65 Response

Please see this link from Thorne Research on this issue:

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