Ironically, the only four states where you can be absolutely sure that the CBD content claimed on the label is the CBD content in the bottle are Colorado, Washington, Oregon, and Alaska, where adult-use cannabis is legal and regulated. That’s because the CBD products available in licensed retail cannabis stores must pass state-mandated lab tests to assure their purity and potency. In fact, if these products haven’t gone through state testing, they’re liable to be seized, as happened recently in Alaska.
With so many companies popping up every day, we’ve done the hard work for you. We bring you the best CBD oil guide and the top 25 brands that made our list based on CBD oil quality, effectiveness, customer service and of course price. Please note, this article is updated constantly, so don’t forget come back from time to time to see the most updated information.
CBD oil has been explored as a potential treatment for schizophrenia. Human trials are a little more advanced when it comes to using CBD oil to treat psychological problems. A 2012 study by a team of nine researchers in Germany, Italy, and the United States investigated the effects of cannabidiol on brain activity in patients with a diagnosis of schizophrenia (3). 
Transparency: Fab’s website features third-party lab results for most products. They only have a lab test for one of their tinctures though (which shows results for cannabinoid potency, as well as contaminants like pesticides). Customer service pointed out that the same CBD oil is used for all their products, but since potencies do vary, we appreciate companies that show potency testing for all products.
If you go through Chapter 481 of the Health and Safety Code, you will find substances like THC (Tetrahydrocannabinol) and dronabinol (synthetic marijuana). What you won't find in Chapter 481 is "cannabidol."  You also won’t find any of the other descriptors of cannabidol found on the Open Chemistry Database maintained by the National Center for Biotechnology Information or in any penalty group in Texas.
Green Gorilla marks itself out by simply blending its flagship line of CBD oils with organically produced extra virgin olive oil – and nothing else. And, as the company states, there’s a benefit to this beyond assuring the product’s purity. In particular, olive oil “has synergistic effects in combination with CBD,” and according to Green Gorilla’s website, it’s “also able to deliver the CBD to the parts of [the] body that need it most.” The products are certainly affordable, too: its 150 mg pure CBD oil comes in at $25.99, for instance, making it a smart choice for new users. And anyone still uncertain about the potential effects of Green Gorilla’s products may have their questions answered by the convenient “science” section of the manufacturer’s website, which neatly explains the difference between THC – the cannabinoid that makes people “high” – and CBD.
CBD oil has been explored as a potential treatment for schizophrenia. Human trials are a little more advanced when it comes to using CBD oil to treat psychological problems. A 2012 study by a team of nine researchers in Germany, Italy, and the United States investigated the effects of cannabidiol on brain activity in patients with a diagnosis of schizophrenia (3). 
Our Best Value pick is CBDistillery, which offers a full spectrum CBD oil containing naturally occurring cannabinoids and terpenes, along with fatty acid Omega 3, B complex vitamins, and 20 essential amino acids. The oil is derived from non-GMO, U.S.-grown hemp. It also contains trace amounts of fractionated coconut oil for subtle flavoring. All product information and third-party testing results are found on the official CBDistillery product page.
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