Great question! There are several things we recommend. First, what kind of extract are they using? When you see a label that lists hemp seed oil, know that it contains zero CBD oil. It comes from the seeds of the plant rather than the stalk, stem, and flowers. You want to see Cannabidiol, hemp oil extract, or hemp extract on the label. Second, every reputable company will have a Certificate of Analysis on their website. That will show you exactly what a third party found when testing the product. Third, be aware of anyone claiming things like cures, treats, or heals. CBD companies are not medical companies. Therefore, they cannot give medical advice or make medical claims. Be cautious of companies that do. Another thing to research is how the company extracts its oil. The ideal methods are CO2 or ethanol. You wouldn’t want to ingest oils that use harmful extraction methods such as butane.