These dosages are pretty standard in the consumer CBD industry and, per the research available, nowhere near the doses proven to be effective in clinical trials. NuLeaf Naturals, a prominent online CBD seller, sells 240 mg of oil for $38.50. It does not specify dosage but measures its CBD concentration in single drops; there are 100 drops per bottle, each containing 2.4 mg. You would have to take the entire bottle, according to Blessing, to get close to the absolute minimum dose that studies show might be effective for reducing anxiety. A $3 squirt of CBD oil on your ice cream or coffee? Probably right around 10 mg. You’d need 30 times that amount to get to the levels at which researchers have found stress-relieving results.
There are a few ways to get CBD into your body. The most common, used in both clinical trials and consumer products, is via an oil in which CBD, which is naturally soluble in fat, has been dissolved. CBD oil can be taken orally, inhaled as a vape, or applied topically. Topical application is supposed to work sort of the way Icy Hot does, affecting a local muscle area specifically to reduce aches and pains, but the other methods produce full-brain and -body effects.
Yes, it does matter. The flower-tops and leaves of some industrial hemp strains may be a viable source of CBD (legal issues notwithstanding), but hemp is by no means an optimal source of cannabidiol. Industrial hemp typically contains far less cannabidiol than CBD-rich cannabis. Huge amounts of industrial hemp are required to extract a small amount of CBD, thereby raising the risk of toxic contaminants because hemp is a “bio-accumulator” that draws heavy metals from the soil.