Within the cannabis industry, CBD products have become a hot commodity, with some companies using hemp-derived sources to extract CBD in order to stay on the right side of federal law. Just how much CBD is contained in hemp isn’t clear however. There isn’t much in the stalks and seeds of the cannabis plant, but breeders have been developing hemp and marijuana strains with “high CBD” content and extracting CBD from plants in the form of concentrated oils. In states where they’re legal, CBD products are increasingly popular and are often included as an additive to beverages and other food products.
Several studies have shown that regular cannabis users have a lower body mass index, smaller waist circumferences, and reduced risk of diabetes and obesity. One 2011 report published in the American Journal of Epidemiology, based on a survey of more than fifty-two thousand participants, concluded that rates of obesity are about one-third lower among cannabis users.[176] This is despite the findings that participants tend to consume more calories per day, an activity that is potentially related to THC’s stimulation of ghrelin, a hormone that increases appetite but also increases the metabolism of carbohydrates. CBD on its own was shown in 2006 to lower the incidence of diabetes in lab rats,[177] and in 2015 an Israeli-American biopharmaceutical collective began stage 2 trials related to using CBD to treat diabetes.[178] Research has demonstrated that CBD benefits weight loss by helping the body convert white fat into weight-reducing brown fat, promoting noatherogenesisrmal insulin production and sugar metabolism.[179]

“For the relief of certain kinds of pain, I believe, there is no more useful medicine than Cannabis within our reach,” wrote Sir John Russell Reynolds, neurologist, epilepsy research pioneer, and physician to Queen Victoria back in 1859.[382] In fact, cannabis was used for pain relief in all of the major ancient civilizations from Asia through the Middle East and into Europe and the Americas. The scientific inquiry into cannabis over the past several decades has confirmed that it is an effective and safe analgesic for many kinds of pain.
But, uh, what is it that CBD is supposed to do? I visited a cannabis dispensary in Boulder to find out what the hype was all about. After passing an ID check, I was introduced to a “budtender” who pointed me to an impressive array of CBD products — tinctures, skin patches, drink powders, candies, salves, massage oil, lotions, “sexy time personal intimacy oil” and even vaginal suppositories to treat menstrual cramps.
Using CBD in defined doses for medicinal purposes is one thing, but putting it in food and beverages is something entirely different. Someone may wind up getting CBD from multiple products, and so their daily dose could vary significantly. Taking a standardized dose of CBD oil daily as a recognized medicinal is a very different thing from taking uncontrolled doses of CBD isolate daily infused artificially into food and beverage products, and the long term risk may be very different — no one really knows for sure.
There are new CBD companies coming online every week – these span the range from truly awful to really great. So how to choose the best? The quality of the CBD oil itself is obviously the most important factor – and many companies do take the quality of their products seriously. To reward those companies, we gave more weight to the quality of the product than any other category.

[241] A. C. Campos, Z. Ortega, J. Palazuelos, M. V. Fogaça, D. C. Aguiar, J. Díaz-Alonso, S. Ortega-Gutiérrez, H. Vázquez-Villa, F. A. Moreira, M. Guzmán, I. Galve-Roperh, and F. S. Guimarães, “The Anxiolytic Effect of Cannabidiol on Chronically Stressed Mice Depends on Hippocampal Neurogenesis: Involvement of the Endocannabinoid System,” International Journal of Neuropsychopharmacology 16, no. 6 (2013): 1407–1419. doi:10.1017/S1461145712001502.
Recent testing of cannabis products from Los Angeles marijuana dispensaries showed over 90% of tested products to contain HIGHER than normal contaminants and pesticide levels, despite organic claims. (The USDA National Organic Program does not certify organic claims on marijuana, and it’s actually not a legally permitted claim on these products.- FYI, I’m an certified IOIA, Independent Organic Inspectors Association organic processing inspector.) There’s no intrinsic difference between high-THC cannabis and low-THC cannabis that somehow renders one clean and one heavy with contaminants. As with every other crop, it is a matter of soil conditions, growing conditions and horticultural inputs. 
Unlike with THC, CBD’s effects aren’t limited to that single receptor. These effects are not precisely known, though CBD certainly has some impact on CB1’s sister receptor (CB2) as well as a receptor called 5-HT1A. When the 5-HT1A receptor comes into contact with a material that agonizes it, the effects can include reduced anxiety and increased calmness.
Third party laboratories analyze all of our full-spectrum hemp extracts and supplements for cannabinoid potency, heavy metals, bacterial/microbial life, mycotoxins (fungus), and pesticides. Our isolate is tested for potency, heavy metals, and pesticides. The unsummarized results of testing for all produced batches can be found in our online batch database.

Cannabidiol—CBD—is a cannabis compound that has significant medical benefits, but does not make people feel “stoned” and can actually counteract the psychoactivity of THC. The fact that CBD-rich cannabis is non-psychoactive or less psychoactive than THC-dominant strains makes it an appealing option for patients looking for relief from inflammation, pain, anxiety, psychosis, seizures, spasms, and other conditions without disconcerting feelings of lethargy or dysphoria.
Though unflavored and priced higher than competitors, Green Roads CBD oils are made by a trusted manufacturer and use organically grown hemp. Following the CO2 supercritical fluid extraction process, board-certified pharmacists formulate the tincture by hand. Green Roads only sells CBD isolates, so if you’re looking for broad-spectrum products look to some of our other recommendations.
We gave the highest points to companies that use a CBD distillate for their tinctures. The process of distillation creates an extract that is pure on a molecular level. There are people who think distillate is too pure, and that a full spectrum decarb produces a more effective tincture. But in light of the inconclusive evidence, we prefer a distillate. The process allows for a high degree of control as to the finished product. It’s also odorless and tasteless, so those tinctures tend to taste better.
That doesn’t mean that the flowers, leaves, and stalks of the hemp plant don’t have a purpose. As you’ll see in section four, all parts of the hemp plant can be used in one form or another. The key thing to remember about hemp is that it is NOT psychoactive or medicinal like the Cannabis sativa plant. This is because the hemp plant is very low in cannabinoids.
Let's say you took a CBD oil that had a bit of THC in it or you want to play it extra, extra safe before a drug screen. How long do you have to wait after your last CBD dose to take a drug test? "All cannabinoids are lipophilic," says Glenn Harrison, M.D., an internist with a specialty in the use of cannabis in modern medical treatment. "They are actually forms of fat, so they get into the cells rapidly and will stay for a long time."
CBD Oil refers to CBD-infused products that contain CBD suspended in an oily base, such as vegetable glycerin, hempseed oil, or another plant-derived oil. Sublingual oils are ideal because they allow for rapid absorption of CBD through the membrane under your tongue directly into your bloodstream. CBD Oils are available in both low and high doses, and droppers built into the cap make it easy to measure your proper dose. CBD Oils are the most popular kind of CBD product thanks to their ease of use and rapid effects.
Research and regulation of cannabis in general is decades behind other crops and drugs because of its long prohibition. We’re in the early stages of a chaos period that will last a decade at minimum — a substance has to be legal in order for scientists to figure out how it works and for the government to figure out how to ensure it’s safe. Clinical trials take years to complete and will have to build on each other to create a competent understanding. Coupled with modern technology’s ability to disseminate truths, half-truths, and complete lies, this means we’re in a phase ripe for scams, intentional and not.
This means, in effect, that CBD and cannabinoids increase natural endorphins. So instead of causing dependence and addiction like opioids, CBD and cannabinoids do the opposite — so much so that CBD has proven valuable for countering narcotic and cocaine addiction. From a medicinal standpoint, the fact that CBD has the potential to relieve pain without causing euphoria, intoxication, or addiction makes it an intriguing therapeutic option — it has high potential for being at least a partial solution to the current opioid epidemic.
I really like this company. They had all the criteria that I was looking for after hours and hours of research trying to understand the CBD world. I tried the 1,000 strength for joint pain and inflammation. I noticed great relief within a day or two. I tried a full spectrum next, because I had read that the entourage effect would work better. To be honest, it was about the same. But I returned to Medterra because of the purity of their product and the confidence I have in the company. Medterra is doing everything right, from the carrier oil, to the lab results, and the USA non gmo grown plant. :)
Laboratory evidence indicated that cannabidiol may reduce THC clearance, increasing plasma concentrations which may raise THC availability to receptors and enhance its effect in a dose-dependent manner.[24][25] In vitro, cannabidiol inhibited receptors affecting the activity of voltage-dependent sodium and potassium channels, which may affect neural activity.[26] A small clinical trial reported that CBD partially inhibited the CYP2C-catalyzed hydroxylation of THC to 11-OH-THC.[27]
But make no mistake, hemp oil and hemp oil with CBD (or CBD oil) are not the same. The hemp oil you might see on grocery store shelves is made by cold pressing hemp seeds. It’s high in omega-3 fatty acids and other beneficial fatty acids, but hemp oil found in the grocery store does not contain significant amounts of cannabinoids including THC or CBD. While hemp oil is a healthful option for a salad dressing, it has no medicinal value by itself.
The only study that has tested the bioavailability of inhaled CBD is from 2014; it found a bioavailability of about 25 percent for 100 mg and 200 mg doses of CBD using a Volcano vaporizer. (The topical lotions are even less studied; there have been no clinical trials on them at all.) This is more efficient than ingesting CBD, in the same way that vaporizing THC is more efficient than eating it. To get an effect, you should ingest a different amount of CBD than you’d inhale ... but how much is that? How much is too much?
If medical marijuana is illegal in a given state, THC levels determine whether a CBD product is illicit or not. In most places, the limit is extremely low. We’re talking under 1 percent THC, with some states opting for a cap as low as 0.3 percent. In this case, the only source that would work is hemp, and CBD products will, therefore, be hemp-derived.

Our supplements are derived from industrial hemp, not to be confused with marijuana. Industrial hemp is a legal plant from which many popular foods are harvested. To create our products, we extract a full spectrum of compounds from the hemp plant. This full spectrum contains a stunningly varied array of phyto-cannabinoids, including CBD, CBC, CBG, CBN, and much more. Our extracts contain less than 0.3% concentration of THC, the component from Cannabis sativa L. that causes a high.
CBD does not appear to have any psychotropic ("high") effects such as those caused by ∆9-THC in marijuana, but may have anti-anxiety and anti-psychotic effects.[9] As the legal landscape and understanding about the differences in medical cannabinoids unfolds, it will be increasingly important to distinguish "medical marijuana" (with varying degrees of psychotropic effects and deficits in executive function) – from "medical CBD therapies” which would commonly present as having a reduced or non-psychoactive side-effect profile.[9][58]
One of CBD’s chief properties is its anticonvulsant nature. Clinical trials have shown that CBD is effective at reducing seizures in children, and the FDA is likely to approve Epidiolex, a pharmaceutical-grade version of CBD for this use, in summer 2018. Although CBD has been documented as an antiepileptic since 1881, CBD’s anticonvulsant mechanisms still remain unclear. Not enough studies have been conducted to understand this relationship fully. One possible explanation for CBD’s neuroprotective effects is its interaction with NMDA receptors, which play a key role in the overly active neuron activity that is a hallmark of epilepsy.
The benefits of CBD and other non-THC cannabinoids don’t stop there. Terpenes and the wide spectrum of other chemical compounds found in hemp flower-bud extracts provide potent anti-inflammatory and antioxidant properties. And like most other herbs, hemp flower-bud extracts have been associated with antimicrobial properties, though cannabis doesn’t appear to be as strong an antimicrobial as many other herbs.
CBD has been in the news before, as a possible treatment for epilepsy. Research is still in its early days. Researchers are testing how much CBD is able to reduce the number of seizures in people with epilepsy, as well as how safe it is. The American Epilepsy Society states that cannabidiol research offers hope for seizure disorders, and that research is currently being conducted to better understand safe use.
With hemp’s legalization, CBD is bound to become even more visible. Its legal status remains unclear — the Drug Enforcement Administration classifies CBD as illegal, although it doesn’t go after anyone using or possessing it, and it hasn’t said if it will reclassify CBD now that hemp is legal. The Food and Drug Administration still considers it a drug, and therefore categorizes it as illegal to be put in foods and or health products without its approval. After the hemp legalization bill passed, FDA Commissioner Scott Gottlieb issued a statement saying that the FDA’s opinions had not changed, and that CBD companies must obtain approval from the FDA.
I have suffered from Neuropathy to both feet for about six years. The symptoms are numbness and pins and needs to the metatarsal region as well as the toes. There is also an intermittent very intense internal itching to the soles of both feet, which changes in location. I have been offered painkilling prescription drugs, but have refused these. I am very interested to learn of the benefits of Hemp/CBD Oil, and would appreciate some advice on which product you feel would most benefit my condition. Many thanks for your anticipated assistance. You may wish to reply to me by e-mail.
The Cannabis Health Index (CHI) is an evidence-based scoring system for cannabis (in general, not just CBD oil effects) and its effectiveness on various health issues based on currently available research data. Refer to cannabishealthindex.com for updated information. Using this rubric and based on eleven studies, cannabis rated in the possible-to-probable range of efficacy for treatment of anxiety.
Cannabis made another leap forward in 1964 when Israeli scientist Dr. Raphael Mechoulam identified the structure of delta-9-tetrahydrocannabinol, or THC. This discovery earned him godfather status of modern cannabis. This particular discovery allowed science to understand THC’s nature as a psychoactive compound in cannabis as well as CBD’s non-intoxicating but vastly therapeutic benefits.
Answering the question “what is CBD oil” would be incomplete without mentioning the many CBD oil benefits. In addition to positively affecting the endocannabinoid system, CBD has been the focus of more than 23,000 published studies about cannabinoids in relation to various medical indications including anxiety, epilepsy, inflammation, cancer and chronic pain to name few. You can even find CBD for pets that is specially formulated to safely allow your pets to experience the natural benefits of CBD. For a more comprehensive look at these and other studies, visit our medical research and education page.
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