Gui Pi wan warning label

In addition to what Stephen said, the prop 65 warning is on most (all?) of the formulas sold in California regardless of ingredients (i.e. it’s a required warning - not really about individual ingredients per se). Mayway (one of our providers) has a lengthy discussion on the topic here.

Long story short, the warning is put there because even with testing it is very difficult to 1000% ensure that a particular herbal formula wouldn’t contain above the legal limit of heavy metals or other substances that fall under prop 65. The warning is largely because you can’t sell substances in California that -could- potentially go over these amounts - it doesn’t mean they are illegal, it just means you can’t sell them without the warning. So they put the warning on to cover themselves from liability.

Generally speaking Chinese herbal formulas from reputable distributors are very reliable, safe and when properly prescribed quite effective. Even those with “toxic” substances are generally fine as the formula itself has long since been designed to accomodate for the downsides of any one herb in the formula.

Keep in mind that the majority of these formulas are 600-2000 years old. They are very well thought through.