As is the case with any plant that constitutes a crop, cannabis plants have been selectively bred over the years to bolster one or another desired characteristic. This means that some plants provide a more potent psychotropic effect, others possess more prominent seeds (used in the production of cooking oil traditionally), while others may make for sturdier textile fibers.
Relevant studies are summarized in Table Table2.2. The anxiolytic effects of CBD in humans were first demonstrated in the context of reversing the anxiogenic effects of THC. CBD reduced THC-induced anxiety when administered simultaneously with this agent, but had no effect on baseline anxiety when administered alone [99, 100]. Further studies using higher doses supported a lack of anxiolytic effects at baseline [101, 107]. By contrast, CBD potently reduces experimentally induced anxiety or fear. CBD reduced anxiety associated with a simulated public speaking test in healthy subjects, and in subjects with SAD, showing a comparable efficacy to ipsapirone (a 5-HT1AR agonist) or diazepam [98, 105]. CBD also reduced the presumed anticipatory anxiety associated with undergoing a single-photon emission computed tomography (SPECT) imaging procedure, in both healthy and SAD subjects [102, 104]. Finally, CBD enhanced extinction of fear memories in healthy volunteers: specifically, inhaled CBD administered prior to or after extinction training in a contextual fear conditioning paradigm led to a trend-level enhancement in the reduction of skin conductance response during reinstatement, and a significant reduction in expectancy (of shock) ratings during reinstatement .
In the meantime, some physicians are forging ahead — and cashing in. Joe Cohen is a doctor at Holos Health, a medical marijuana clinic in Boulder. I asked him what CBD is good for, and he read me a long list of conditions: pain, inflammation, nausea, vomiting, intestinal cramping, anxiety, psychosis, muscle spasms, hyperactive immune systems, nervous system degeneration, elevated blood sugar and more. He also claimed that CBD has anti-cancer properties and can regenerate brain cells and reduce the brain’s levels of amyloid beta — a kind of protein that’s been linked to Alzheimer’s disease. I asked for references, noting that most of these weren’t listed in the Academies report or a similar review published in the Journal of the American Medical Association. “I think you just have to Google search it,” he said. It’s true that a preliminary study found hints that cannabinoids might reduce beta amyloid proteins in human brain cells, but the study was done in cells grown in a lab, not in people. As for cancer, the FDA sent warning letters last year to four companies that were selling products that claimed to “prevent, diagnose, treat or cure” cancer.
A survey led by the McGill University Health Centre in Canada revealed that cannabis use results in an improvement in non-cancer pain, sleep, and the mood patterns. In the same survey, it also revealed that ‘high’ and dry mouth were the most commonly reported side effects. People who suffer from cancer also turn to cannabis-related options, including therapeutic grade CBD oil, when the pain of chemotherapy or the disease itself becomes unbearable.
In relation to sleep apnea, a 2002 animal study observed the ability of THC to restore respiratory stability by modulating serotonin signaling and reducing spontaneous sleep-disordered breathing. In 2013 a trial using the pharmaceutical drug dronabinol, a synthetic THC mimic, noted improvements in fifteen out of seventeen study participants following twenty-one days of treatment.
Your endocrine system consists of glands throughout your body which regulate everything from energy levels to metabolism to sex drive. One major function of this system is to produce excitation in response to stress, which is of course necessary for survival, but when it gets out of hand it can be a source of excess stress. One big effect of cannabidiol in the endocrine system seems to be to protect against excess stress by reducing susceptibility to stress-induced activation in the hypothalamus-pituitary-adrenal axis. CBD significantly decreases plasma cortisol levels, and this is actually why I started using CBD in the first place – to reduce my cortisol.
Research indicates that CBD may be valuable in the treatment of cancer in a number of different ways. CBD as well as some of the other compounds found in cannabis have an antitumor effect and can amplify the death of tumor cells in both colon cancer and leukemia. In addition, investigations have shown that CBD can be used to stop the spread of cancer cells in cervical cancer cells. It is important to note that the vast majority of CBD and cancer studies are pre-clinical, meaning they’re not conducted on human or even mammalian test subjects, and the findings – while promising – should not be construed as conclusive proof that CBD can cure cancer.
So am I to assume, due to no response/deleted comment that my simple question was too difficult to answer? With all the technical & correct information you have on you GREAT website, can someone (?) not simply correct or acknowledge the FACT the your NOT using nano-particle size product? I am truly interesting (for my wife) in CBD, have done my research, and I love working with numbers which is why if found this discrepancy. Comments welcome, but avoidance is disturbing.
Cannabidiol did not reduce responses to negative emotional stimuli or reduce anxiety in healthy participants, according to a study published in Cannabis and Cannabinoid Research in 2017. Researchers tested participants' responses to negative images or words and threatening emotional faces and sensitivity to social rejection after taking oral cannabidiol.
If you have dealt with anxiety before, you are not alone. As the author of a 2015 article published in the Dialogues in Clinical Neuroscience says: "Anxiety disorders...are the most prevalent mental disorders and are associated with immense health care costs and a high burden of disease." Yet many are finding that pharmaceuticals won't do, especially for chronic use, and they are turning increasingly to supplements and cannabidiol (CBD) oil for anxiety. 
The first step to finding your correct CBD dosage is getting as much information as you can about the product you’re using. What is the concentration of CBD? Are there third-party lab tests that can confirm that? The CBD industry is still mainly a grassroots therapeutic movement, and as such, largely unregulated. Concentration and purity levels can differ greatly depending on the manufacturing process.
– CBD Oil with THC; This kind of oil isn’t legitimate in all states and has an unexpected impact in comparison to unadulterated CBD oil. Numerous individuals take marijuana for THC, which aids them to fight distinctive restorative conditions. They trust that when the two are joined, they give a better experience that surpasses each other’s useful properties. Note that THC can counter the advantages of CBD and in this way, perfect dosing is fundamental.
CBD inhibited escape responses in the ETM and increased DPAG escape electrical threshold , both proposed models of panic attacks . These effects partially depended on 5-HT1AR activation but were not affected by CB1R blockade. CBD was also panicolytic in the predator–prey model, which assesses explosive escape and defensive immobility in response to a boa constrictor snake, also partially via 5-HT1AR activation; however, more consistent with an anxiogenic effect, CBD was also noted to decrease time spent outside the burrow and increase defensive attention (not shown in Table Table1)1) [75, 86] . Finally, CBD, partially via CB1Rs, decreased defensive immobility and explosive escape caused by bicuculline-induced neuronal activation in the superior colliculus . Anticompulsive effects of CBD were investigated in marble-burying behavior, conceptualized to model OCD . Acute systemic CBD reduced marble-burying behavior for up to 7 days, with no attenuation in effect up to high (120 mg/kg) doses, and effect shown to depend on CB1Rs but not 5-HT1ARs [71, 74, 88].
Our results demonstrate that CBD exerts fast and maintained antidepressant-like effects as evidenced by the reversal of the OBX-induced hyperactivity and anhedonia. In conclusion, our findings indicate that CBD could represent a novel fast antidepressant drug, via enhancing both serotonergic and glutamate cortical signalling through a 5-HT1A receptor-dependent mechanism. (Source)
If this is not sufficient for calming your symptoms, a gradual increase of another 25 mg per day, over the course of 3-4 weeks, is recommended. While there have been no reports of more serious side effects when this oil is taken in larger concentrations, it is best to slowly increase your dose to find a comfortable and effective level, given your individual characteristics and needs.
To meet legal standards in the United States, CBD oil and other products may contain up to 0.3% THC; low enough to avoid all psychoactive effects, but enough to potentially appear on a sensitive drug test. Kat’s Naturals, however, sells CBE products of the utmost purity, containing 0% THC, and free from pesticides, chemicals, and contaminants. The company works with organic hemp cultivated in the Netherlands, and extracts its CBD using a broad-spectrum critical CO2 process, retaining a high amount of omega 3’s and 6’s (heart-healthy fats), vitamins, and phytochemicals. Kat’s Naturals is also big on using synergistic essential oils- also organic- to enhance their CBD’s therapeutic effects. The best CBD for anxiety in their lineup is Relax, a tincture that combines 300 mg CBD, Organic Hempseed oil, and wild orange essential oil, along with Hops oil, a potent calming botanical which has been used to promote sleep since ancient times. Kat’s Naturals recommends this product explicitly as a great CBD for anxiety, as well as for promoting sound sleep, making this an excellent choice for anxiety-induced insomnia.