Purple Sticky organic grade “A” leaves contain more than 4 mg’s of Salvinorin A per gram of leaf, which is high above the average! Most other companies sell grade “B” leaf & start with that for their extracts, which contains only 2.4 mg’s of Salvinorin A. All of our extracts are made in a state of the art, GMP government approved Laboratory- not a garage or basement! Most cheap salvia extracts on the market are crude extracts, which are not lab standardized. Note: Customers are responsible for knowing local laws and regulations before purchasing.