The best and safest products available on the market are products where hemp is planted in the United States and oil is produced at food level facilities. And, of course, it must be tested by a reliable third party facility. If you are looking for a safe CBD oil product with high quality and CBD content, find suppliers located in the US that only use a flax that is planted U.S. In addition, look for suppliers whose products are tested thoroughly for purity, quality, and cleanliness. And, as an additional measure of safety and quality, many of these producers are regulated by state institutions.