A wide variety of solvents can be used for extraction, such as chloroform, dichloromethane, petroleum ether, naphtha, benzene, butane, methanol, ethanol, isopropanol, and olive oil. Currently, resinoids are often obtained by extraction with supercritical carbon dioxide. The alcohols extract undesirable water-soluble substances such as chlorophylls and sugars (which can be removed later by washing with water). Non-polar solvents such as benzene, chloroform and petroleum ether will not extract the water-soluble constituents of marijuana or hashish while still producing hash oil. In general, non-polar cannabis extracts taste much better than polar extracts. Alkali washing further improves the odor and taste.
CBD oil is made by mixing the extracted CBD or cannabidiol from the cannabis or marijuana plant (Cannabis Sativa) with coconut or hemp seed oil. CBD oil possesses cannabidiol; while THC is psychoactive, CBD is not, thereby helping relieve pain, treating anxiety and depression, fighting cancer, reducing anxiety. It also improves the quality of sleep, boosts appetite, and optimizes digestion.
Devinsky puts more weight behind the scientific advancements: In June, the FDA approved an epilepsy drug called Epidiolex, which contains a purified form of CBD oil. In controlled clinical trials, the drug was proven to reduce seizures in people with Dravet syndrome and Lennox-Gastaut syndrome — and it didn't produce as many of the unpleasant side-effects that come with other epilepsy medications.
Cooper recently got funding from the National Institutes of Health for a study looking at cannabinoids — including CBD in isolation — as a substitute for opioids, and numerous other clinical trials of CBD are underway. It will be several years before results are available, but these studies should help clarify both what benefits the substance may provide and any side effects it may come with. Most of the adverse effects so far associated with cannabis, such as impairments in short-term memory, coordination and judgment,2 come from products that contain THC as well as CBD, Cooper said, but we need to do more studies to find out for sure whether CBD has fewer risks. Studies are also needed to identify the best way to administer and dose CBD. “I get emails from people asking me what dose of CBD to use, and the truth is, we really don’t know,” Cooper said.
But Hague has something else he wants to show me. He leads me into a moist propagation room, where a young crop is taking root in near darkness. These babies, tagged with yellow labels, are being grown strictly for medical purposes. They’re all clones, cuttings from a mother plant. Hague is proud of this variety, which contains almost no THC but is rich in CBD and other compounds that have shown at least anecdotal promise in treating such diseases and disorders as multiple sclerosis, psoriasis, post-traumatic stress disorder, dementia, schizophrenia, osteoporosis, and amyotrophic lateral sclerosis (Lou Gehrig’s disease).
Knowing how much CBD you’re taking can take a little math. Again, capsules are straightforward—the bottle will say how much CBD each one contains. For tinctures, you need to know the total amount of CBD in the container and the container’s size to calculate how much CBD is in each serving. I found 1-ounce tincture bottles, which contain roughly 30 servings, that ranged from containing 100 milligrams of CBD to 1,000.
Cannabis has been used for millennia as a pain-relieving substance. Evidence suggests that cannabinoids may prove useful in pain modulation by inhibiting neuronal transmission in pain pathways. The oil has the ability to relieve chronic pain and inflammation, which is why cancer patients undergoing chemotherapy often turn to cannabis oil for relief. It’s also why it can be a part of natural fibromyalgia treatment.
Hemp oil — obtained by pressing benefit-rich hemp seeds — is slightly different than cannabis oil, although they both come from the same genus, cannabis, and the same species, cannabis sativa. The term hemp is used to describe a cannabis sativa plant that contains only trace amounts of THC. Hemp is a high-growing plant that’s commonly grown for industrial uses, such as oils and topical ointments, as well as fiber for clothing, construction, paper and more.
Colored impurities from the oil can be removed by adding activated charcoal to about one third to one half the weight or volume of the solvent containing the dissolved oil, mixing well, filtering, and evaporating the solvent. When decolorizing fatty oils, oil retention can be up to 50 wt % on bleaching earths and nearly 100 wt % on activated charcoal.
Donald Abrams was a member of the committee that reviewed the evidence that went into producing the report, and he said that the studies they reviewed overwhelmingly used pharmaceutically available preparations that contain THC, including dronabinol, nabilone and the whole-plant extract spray nabiximols, which contains equal parts CBD and THC. It’s impossible to know whether the benefits of cannabis can also be obtained from CBD alone, Abrams said, because CBD is just one of 400 chemicals present in the plant. So far, CBD in isolation has been studied in only a handful of randomized, placebo-controlled trials (considered the gold standard of evidence in medical research), and the evidence remains sparse.
But now, as more and more people are turning to the drug to treat ailments, the science of cannabis is experiencing a rebirth. We’re finding surprises, and possibly miracles, concealed inside this once forbidden plant. Although marijuana is still classified as a Schedule I drug, Vivek Murthy, the U.S. surgeon general, recently expressed interest in what science will learn about marijuana, noting that preliminary data show that “for certain medical conditions and symptoms” it can be “helpful.”
My mother has dementia/Alzheimers along with a broken knee that they will not repair do to her mental status. She is currently in a nursing home. I firmly believe her mental situation began with the over use of hydrocodone for over 30 years and was acerbated by the trauma of breaking and disconnecting her knee cap. Since weaning her off of her meds (still in progress) we have regained much of her consciousness. I want to try CBD to help in her recovery or to help slow down the disease. I cannot find a dosage recommendation plus the nursing home/doctor does not recommend it. I would need to give it to her when I am there visiting (about 3 - 4 times per week). Is there a recommended dosage for dementia/Alzheimers?
It's important to know that although THC and CBD are the most studied components of cannabis, there are many more chemical compounds found within the plant, such as cannabigerol (CBG), cannabichromene (CBC), cannabidivarin (CBDV), tetrahydrocannabivarin (THCV), terpenes, and flavonoids. While there is still much to learn about these other chemicals, researchers in Israel have discovered that whole-plant cannabis extracts that contain these other chemicals are more beneficial than isolated extracts that contain just CBD or THC.
THC, an intoxicating and illegal substance, is responsible for causing marijuana users to get “high.” Unlike THC, CBD is non-psychoactive because it does not act on the same pathways as THC. Thus, it is impossible to get “high” by smoking or ingesting CBD or CBD oil extracted from industrial hemp plants, as they only have minuscule traces of THC (<0.3%).
That being said, it was unlikely that the federal government was interested in pursuing individuals complying with state-mandated regulations surrounding legalized cannabis for recreational use, although the CSA law still gives them authority to do so. However, the new Trump administration may change this thinking and users of legal marijuana and legal dispensaries await further action and clarifying rules.
Word of Caution: Although this list clearly shows that cannabis essential oil can be an effective remedy for many common health conditions, it is still a potent chemical substance extracted from a plant with psychotropic substances. Therefore, you should always be very careful while using such an essential oil, including the amount you use and the conditions under which you use it. Speak to a professional about mixing essential oils and present medications before adding any new elements to your health regimen. Also, the use of cannabis is restricted/banned in many countries, so consult a local health specialist before use.
People claim that cannabis oil can be used to treat a wide range of conditions, though evidence to back up these claims is often lacking. For example, according to Medical News Today, people use cannabis oil for conditions ranging from pain to acne; some even claim the oil can cure diseases like Alzheimer's and cancer. (But again, there is no clinical evidence to support these claims.)
“It can affect everything from emotion to pain to appetite to energy metabolism to brain function to even the immune system and inflammation,” says Hector Lopez, M.D., a consultant to PlusCBD Oil, one of the top-selling brands. “When you have a system that cross talks with all those pathways, then there are very few things the endocannabinoid system does not influence.”
If he had his way, what Mechoulam regards as the often irresponsible silliness of recreational pot culture would give way to an earnest and enthusiastic embrace of cannabis—but only as a medical substance to be strictly regulated and relentlessly researched. “Right now,” he complains, “people don’t know what they’re getting. For it to work in the medical world, it has to be quantitative. If you can’t count it, it’s not science.”
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