I am a beginner at trying CBD oil for my anxiety/sleep issues, due to multiple physical ailments. Starting at very low dose, one drop under tongue at noon, and before bed. So far, after 3 days, anxiety seems to be reduced by half, insomnia reduced, and even pain is reduced. One night tried 2 drops, which caused big jump in loss of sleep. From the literature, starting low and slow is the way to go. A good pure source of CBD oil seems essential, if there is any amount of THC other than traces, it will cause the opposite effect of what is desired, and increase anxiety. Sadly, there is no uniformity among the producers, so you need to examine the fact sheet on contents of the CBD oil, or do not buy it! I am trying to stay off of a prescription med called escitalopram (Lexipro), due to its known side effects, and addiction potential, but will have to go to it if the CBD oil fails.