A 2016 literature review indicated that cannabidiol was under basic research to identify its possible neurological effects, although as of 2016, there was limited high-quality evidence for such effects in people. A 2018 meta-analysis compared the potential therapeutic properties of "purified CBD" with full-plant, CBD-rich cannabis extracts with regard to treating refractory (treatment-resistant) epilepsy, noting several differences. The daily average dose of people using full-plant extracts was more than four times lower than of those using purified CBD, a possible entourage effect of CBD interacting with THC.
Dispensaries: In states where marijuana is legal for recreational use, dispensaries are a common sight. They are much rarer in states with more restrictions. In states that permit the use of medical marijuana, hemp-based CBD oils do not normally require a prescription but marijuana-based oils do. Like brick-and-mortar locations, dispensaries offer more customer service. However, as noted, this may not be an option depending on the buyer’s state of residence. Also, CBD oil prices tend to be significantly higher at dispensaries.
 M. H. N. Chagas, A. L. Eckeli, A. W. Zuardi, M. A. Pena-Pereira, M. A. Sobreira-Neto, E. T. Sobreira, M. R. Camilo, M. M. Bergamaschi, C. H. Schenck, J. E. C. Hallak, V. Tumas, and J. A. S. Crippa, “Cannabidiol Can Improve Complex Sleep-Related Behaviours Associated with Rapid Eye Movement Sleep Behaviour Disorder in Parkinson’s Disease Patients: A Case Series,” Journal of Clinical Pharmacy and Therapeutics 39 (2014): 564–566. doi:10.1111/jcpt.12179.
When we started CBD products we were getting it in candy form from a friend. It worked really well for us adults. But for the kids it was a mess cutting hard candy is a pain. So I thought wed give the 500 mg oil a try see how they liked it. And they love it They prefer it to the candies. My daughter is not a good sleeper and she says that using the oil works better and faster than eating the candy. My sons also love it as well. There is no flavor to worry about. I give them each 4 mg under the tongue for 30 seconds and they happily go to bed and feel good the next day. I am so glad we bought this
Some CBD oil brands can be evasive when it comes to product testing details. Populum addresses this by including a hard copy of the oil’s lab testing results in the product packaging. Full lab results are easily accessible on the brand’s website, as well. Prices for the Populum CBD oil range from 12 to 28 cents per milligram, depending on the concentration, making it a relatively inexpensive full spectrum product. All U.S. military veterans receive a 25% discount, as well. Populum offers a risk-free 30-night product trial.
Could cannabidiol help prevent tumors and other cancers before they grow? A 2012 study showed that animals treated with CBD were significantly less likely to develop colon cancer after being induced with carcinogens in a laboratory. Several studies had already shown that THC prevents tumors and reduces them, including one in 1996 on animal models that found that it decreased the incidence of both benign and hepatic adenoma tumors. In 2015, scientists analyzed the medical records of over eighty-four thousand male patients in California and found that those who used cannabis, but not tobacco, had a rate of bladder cancer that was 45 percent below the norm. Topical products can be used to treat and prevent skin cancers. Continuing research is focused on the best ratio of CBD to THC and the most effective dose level in cancer prevention and treatment.