Prop 65


Understanding Proposition 65

You may have come across the following warning on various products:

⚠WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to

What is California Prop 65?

Formerly known as the Safe Drinking Water and Toxic Enforcement Act, Proposition 65 mandates the publication of a list of chemicals that the State of California has determined to cause cancer or birth defects. It also requires companies selling products containing these chemicals to inform California residents about the potential risk of exposure by including a warning notice on the product label or by providing this information to the customer before purchase. Proposition 65 warning notices are prominently displayed throughout California, spanning restaurants, grocery stores, hotels, bars, schools, hospitals, and amusement parks.

Who Must Display a Prop 65 Warning?

Proposition 65 necessitates companies to include this notice on their products if any ingredient exceeds 1/1000th of what the World Health Organization deems as “Safe Harbor Levels” for their list of chemicals, which includes certain naturally occurring minerals. While many regions typically rely on federal regulations for such standards, California has established its own specific laws and requirements that businesses must adhere to if they intend to operate within the state. It’s important to note that Proposition 65 warnings do not imply that the product is unsafe. Rather, they are meant to inform California consumers about the presence of a Proposition 65-listed chemical, allowing consumers to make informed choices when purchasing these products. It’s worth mentioning that heavy metals like lead, arsenic, cadmium, and mercury naturally occur in soil and water. As plants grow, they absorb nutrients from the soil and water, including trace amounts of these naturally occurring heavy metals.

At MNM ProLabs, every finished product undergoes rigorous testing for identity and purity. Additionally, incoming lots are quarantined until they are tested for banned substances. If any MNM ProLabs product contains a naturally occurring chemical in quantities exceeding a Proposition 65 threshold, the required Proposition 65 warning is displayed on the product page or during checkout. It’s important to emphasize that MNM ProLabs products may require a Proposition 65 warning notice but are still considered safe for daily consumption according to the standards of the United States Pharmacopeia.

For More Information

For further details about Proposition 65, please visit

You may contact us concerning any matter relating to Prop 65, you may send an email to