^ Jump up to: a b c "FDA warns company marketing unapproved cannabidiol products with unsubstantiated claims to treat cancer, Alzheimer's disease, opioid withdrawal, pain and pet anxiety". US Food and Drug Administration. July 23, 2019. Retrieved July 24, 2019. Unlike drugs approved by the FDA, the manufacturing process of these products has not been subject to FDA review as part of the drug approval process, and there has been no FDA evaluation of whether these products are effective for their intended use, what the proper dosage is, how they could interact with FDA-approved drugs, or whether they have dangerous side effects or other safety concerns.
Cannabidiol is insoluble in water but soluble in organic solvents such as pentane. At room temperature, it is a colorless crystalline solid.[34] In strongly basic media and the presence of air, it is oxidized to a quinone.[35] Under acidic conditions it cyclizes to THC,[36] which also occurs during pyrolysis (smoking).[37] The synthesis of cannabidiol has been accomplished by several research groups.[38][39][40]
CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.
To make this more concrete, let’s use an example here. This is a high-CBD hemp oil product made from industrial hemp. It has a concentration of CBD between 18% and 24%. This means that it has 18%–24% parts CBD dissolved in the actual oil, which is composed by other substances. So 18%–24% is pure CBD, and the rest are hemp oil extracts and other fatty acid substances.
Vaping has grown in popularity with the rise of e-cigarettes, which were introduced to the mass market in the U.S. in 2007. Vaping devices include not just e-cigarettes, but also vape pens and advanced personal vaporizers (also known as ‘MODS’). E-cigarettes, which resemble smoked cigarettes, and vape pens, which resemble large fountain pens, are typically simpler in design and less expensive than devices that have been customized by the user.
We’ve established the fact that naturally occurring CBD is the same CBD regardless of the plant it came from. However, CBD and CBD oil are not in fact the same thing. As we’ve seen above, CBD is a chemical compound with sharply defined characteristics, while CBD oil is a mixture of various natural substances as they are derived from the plant of cannabis.
In nature, Cannabis ruderalis typically has the lowest levels of THC, Cannabis sativa has a higher level of THC than it has CBD, and Cannabis indica has a higher level of CBD than it has THC. However, since man has been cultivating cannabis (and especially Cannabis sativa) for thousands of years, the effects of artificial selections have led to several different types of cannabis even within the same species, depending on the purpose the cannabis was cultivated for.
The e-liquid in vaporizer products usually contains a propylene glycol or vegetable glycerin-based liquid with nicotine, flavoring and other chemicals and metals, but not tobacco. Some people use these devices to vape THC, the chemical responsible for most of marijuana's mind-altering effects, or even synthetic drugs like flakka, instead of nicotine.

"If there was good evidence that people were using e-cigarettes just to quit smoking, there would be wide support," Benowitz says. "The problem is most of the e-cigarette use in the U.S. is dual use with cigarettes." People use e-cigs in places or situations where they can't smoke, like in a restaurant, but continue lighting up when they can, he explains.
^ Scott Gottlieb (July 30, 2019). "The CBD craze is getting out of hand. The FDA needs to act". The Washington Post. Retrieved July 31, 2019. ... many of the compound’s expansive benefits are fanciful, and in fact, the sale of much of the product is illegal under current law. The Food and Drug Administration must act to make sure commercial interests don’t strip away any legitimate value that the compound might have.

Can CBD oil help anxiety? Cannabidiol (CBD) is a chemical occurring in cannabis plants. It is possible to add CBD oil to food, and an increasing amount of evidence suggests that it may improve mental health, particularly anxiety. It does not seem to have adverse side effects, but CBD oil is illegal in some states. Learn more about CBD oil here. Read now