“This interest in CBD is coming out more broadly in these perceptions of lack of harmfulness and the changing perceptions of marijuana use in general,” says Dr. Mitchell. “For a lot of different disorders—PTSD, ASD, some addictions—[some people] are interested because it might have therapeutic effects when you isolate the CBD. But those studies are preliminary. When you look at the published literature on CBD there’s nothing—it’s limited to one study.”
What about the question of CBD oil being a more natural option than a medication? It comes from a plant, after all.
“The literature shows there are harmful effects,” says Dr. Mitchell. “There are impacts on cognitive ability, motivation. Especially for those who are younger and smoking more, there is an impact on IQ.”
CBD Oil for ADHD? What the Research Says
He reminds anyone interested in CBD oil or cannabis products that there have not been the studies showing effectiveness or safety for these products when it comes to ADHD management.
The oils and resins are then further refined to separate the CBD from other compounds; this could be a combined mechanical and chemical process. It must also be tested to make sure all THC has been removed, especially when the marijuana plant is used rather than PCR hemp.
Some advocates for CBD oil claim that its effects on the body are gentler and more effective than medications for ADHD because it is a natural product, made from a plant.
“When parents or adults look into CBD oil for someone with ADHD, it’s not just that there’s a lack of evidence out there right now,” says researcher John Mitchell, PhD, from the Duke ADHD Program. “There have been no treatment studies. There are no randomized trials that show it works. And there are other treatment options available for kids and adults with ADHD. These are unregulated products. If these are not well-regulated products, how do we know that we’re really getting what’s being advertised?”
Karen Sampson Hoffman
“When parents or adults look into CBD oil for someone with ADHD, it’s not just that there’s a lack of evidence out there right now,” he says. “There have been no treatment studies. There are no randomized trials that show it works. And there are other treatment options available for kids and adults with ADHD. These are unregulated products. If these are not well-regulated products, how do we know that we’re really getting what’s being advertised?”
Dangers may also exist in the method of delivery. CBD is packaged and consumed in oils, tinctures, or edibles — each one absorbed differently by a person’s body. “The labeling in this industry,” says Vigil of UNM, “is horrific.”
“There are anecdotes that CBD may help with ADHD,” says Dr. Robert Carson, an assistant professor of neurology and pediatrics at Vanderbilt University who co-authored a 2018 study on the efficacy of CBD on epilepsy, “but this is true for many other symptoms or diseases. Thus, there may be patients whose ADHD symptoms improve after adding CBD, but we cannot generalize that anecdote more broadly. Secondly, the cases we’re most likely to hear about are the one where somebody had a great response — not the 10 who did not.”
The Netherlands’ self-professed “cannabis myth buster,” Arno Hazekamp stated in a recent paper, “While new CBD products keep entering the market virtually unchecked, effective regulatory control of these products has stayed far behind. As a result, unknown risks about long-term effects remain unaddressed, especially in vulnerable groups such as children.”
None of this will stop some people from self-medicating with CBD or trying it on their children. “Apparently there are products offering about 30mg of CBD per dose,” Earleywine says. “I rarely see published work with humans that shows much of an effect below 300mg, which… would get quite expensive… So it’s probably a waste of time and money.”
The Dangers of Experimenting with CBD for ADHD
“Families need to think very hard about potential risks versus benefits for treating other disorders, including ADHD,” Carson advises. “So please discuss what you are thinking about doing with your child’s physician. In the absence of good data, a dose of 1 milligram per kilogram of body weight per day is where most patients start when using CBD for epilepsy — and this seems to be well tolerated. But if the side effects from any medication are worse than the problem was to begin with, that patient might be on too much.
With all that profit on the horizon, why so few studies? At least partially to blame is the legality of CBD; it’s difficult to attain a federal grant to study a federally illegal drug. Politics also come into play, as do lingering public perceptions of cannabis as a gateway drug that may lead to serious mental disorders, lethargy, or both.
These days, it’s tough to find an online community or social media group not singing the praises of cannabidiol (CBD) oil. This helps to explain why so many people are exploring its benefits for diseases and disorders ranging from Alzheimer’s and Parkinsons to PTSD and, yes, attention deficit disorder (ADHD or ADD). Though research suggests that CBD oil may benefit patients with epilepsy and other disorders, any such claims around ADHD are only that: claims.
What Is CBD? Does It Help ADHD?
“The bottom line,” Evans says, “is that there is a dearth of research on all cannabinoid actions — because of its schedule 1 classification — and no clear scientific evidence I can find to endorse or not endorse CBD use for ADHD.”
The studies done on CBD and ADHD to date amount to… practically nothing. One 2011 study showed that, among a group of 24 people with social anxiety disorder, the half who’d taken CBD were able to speak in front of a large audience. In 2015, researchers in Germany examined the relationship between cannabis (CBD and THC) and ADD in 30 patients, all of whom said they experienced better sleep, better concentration, and reduced impulsivity while using the cannabis products. Finally, a 2017 study looking at CBD oil and ADHD in adults found that the oil improved some symptoms, but that more studies were needed to confirm its findings.