You really want to get a high-quality CBD oil from an organic source that are either able to be inhaled or else paired with some sort of lipid (THC / Sunflower Seed Oil / Citrus Oil / etc) to insure you actually absorb it into your bloodstream.

Ideally you have something that has been emulsified so that it can pass the blood brain barrier as the largest concentration of CBD receptors are located in the brain.

I use to sell CBD oil, so if you want any more information on it I can give you. I don't feel right directing toward particular brands but I can definitely direct you toward research if you're still interested