Although delta-9-tetrahydrocannabinol (known as THC) is the primary psychoactive ingredient, other known compounds with biologic activity are cannabinol, cannabidiol, cannabichromene, cannabigerol, tetrahydrocannabivarin and delta-8-THC. Cannabidiol (CBD) is thought to have significant pain-relieving and anti-inflammatory activity without the psychoactive effect of delta-9-THC. (2)
CBD Isolate is the purest supplement available. It’s a 99% pure CBD supplement derived from hemp oil. Despite its concentration, CBD isolate effects are similar to other CBD concentrates, and it can be used in a variety of ways. It can be consumed itself, added to foods and beverages, or vaporized. You can also add it to other CBD products to increase their potency.
In September 2018, following its approval by the FDA for rare types of childhood epilepsy, Epidiolex was rescheduled (by the Drug Enforcement Administration) as a Schedule V drug to allow for its prescription use. This change applies only to FDA-approved products containing no more than 0.1 percent THC. This allows GW Pharmaceuticals to sell Epidiolex, but it does not apply broadly and all other CBD-containing products remain Schedule I drugs. Epidiolex still requires rescheduling in some states before it can be prescribed in those states.
Cannabidiol has antipsychotic effects. The exact cause for these effects is not clear. However, cannabidiol seems to prevent the breakdown of a chemical in the brain that affects pain, mood, and mental function. Preventing the breakdown of this chemical and increasing its levels in the blood seems to reduce psychotic symptoms associated with conditions such as schizophrenia. Cannabidiol might also block some of the psychoactive effects of delta-9-tetrahydrocannabinol (THC). Also, cannabidiol seems to reduce pain and anxiety.
Hash oils seized in the 1970s had a THC contents ranging from 10 to 30%. The oil available on the U.S. West Coast in 1974 averaged about 15% THC. Samples seized across the United States by the Drug Enforcement Administration over an 18-year period (1980–1997) showed that THC content in hashish and hashish oil averaging 12.9% and 17.4%, respectively, did not show an increase over time. The highest THC concentrations measured were 52.9% in hashish and 47.0% in hash oil. Hash oils in use in the 2010s had THC concentrations as high as 90% and other products achieving higher concentrations 
@parus i just got my certification for medical marijuana. Upon buying what was recommended I was given CBD oil, I’ve not been on it a week yet today will be my fourth day of using it. It takes about 1/2 hour to work but it seems to help. They also gave me a cannabinol patch to use at night fir the severe itch in my head from the shingles. Also a vape two puffs as needed for the itch break through which I have not tried yet. I’m a bit anxious about using it.
Sublingual CBD Oils – also known as CBD Tinctures or CBD Hemp Oil – are the most popular type of CBD products, because of their high bioavailability and rapid absorption. There are many other kinds of products as well, including CBD edibles, CBD topicals, and even CBD-infused Coffee. CBD products have gained immense popularity in health and wellness circles thanks to their natural support of our endocannabinoid system (ECS).
Most human studies of CBD have been done on people who have seizures, and the FDA recently approved the first CBD-based drug, Epidiolex, for rare forms of epilepsy. Clinical trials for other conditions are promising, but tiny. In one Brazilian study published in 2011 of people with generalized social anxiety disorder, for example, taking a 600-mg dose of CBD (higher than a typical dose from a tincture) lessened discomfort more than a placebo, but only a dozen people were given the pill.
In addition to acting on the brain, CBD influences many body processes. That’s due to the endocannabinoid system (ECS), which was discovered in the 1990s, after scientists started investigating why pot produces a high. Although much less well-known than the cardiovascular, reproductive, and respiratory systems, the ECS is critical. “The ECS helps us eat, sleep, relax, forget what we don’t need to remember, and protect our bodies from harm,” Marcu says. There are more ECS receptors in the brain than there are for opioids or serotonin, plus others in the intestines, liver, pancreas, ovaries, bone cells, and elsewhere.
CBD oil, which is also known as cannabidiol oil, is a legal alternative to THC oil, and it is available for sale in all US states, as well as many places around the world. It is just one of over 100 compounds derived from cannabis, and it is separate from THC. THC gives users a “high” due to its psychotropic properties, but this is not the case with CBD oil.