We here at eKo Vapors pride ourselves on creating extremely complex flavors using only the best of the best of flavors but short of that our number one priority is our customers safety. In order to achieve this we do extensive testing on all our products and e-liquid. We only use American Made FDA approved (USP) grade ingredients in all of our e-liquids. The electronic cigarette industry is flooded with inferior made e-liquid from overseas. These companies care little about the safety of their customers. E-liquid produced overseas often carries a smaller price tag, but it comes at quite a cost. Here at eKo Vapors we only use (USP) grade ingredients which are approved by the FDA..