This is premium liquid nicotine that’s made in the USA. Our company is USP, ISO 7 and GMP certified so we bring you the finest quality. We have in-house experts on hand to for quality assurance and maintain the highest quality and purity available. This product is 100 % clear and tasteless which enables you to create any flavor profile imaginable. We then composite your prefered strength with one of our USP Grade Propylene Glycol, our GMP Grade Vegetable Glycerin or 50/50.