Conversely, to preserve most of the plant’s trichromes – these are the cannabinoids, terpenes, and flavonoids – look for Supercritical (or subcritical) CO2 extraction. This method uses carbon dioxide under high pressure and extremely low temperatures to isolate, preserve, and maintain the purity of the medicinal oil. While this method is more expensive and involves complex equipment and expertise, it ensures quality.
But, and there’s always a “but” when it comes to weed in America, unless you’re buying cannabis CBD in a state where weed is recreationally legal or have a medical card in a legalized state, you’re shopping in the unregulated market that is industrial hemp CBD. (Full disclosure: I've worked with restaurants to launch hemp-CBD drinks and am the co-founder of Nice Paper, a site about cannabis.)
The reason for the low THC content in hemp is that most THC is formed in resin glands on the buds and flowers of the female cannabis plant. Industrial hemp is not cultivated to produce buds, and therefore lacks the primary component that forms the marijuana high. Furthermore, industrial hemp has higher concentrations of a chemical called Cannabidiol (CBD) that has a negative effect on THC and lessens its psychoactive effects when smoked in conjunction.
Every CBD product should make third-party lab results available, either online, in their packaging, or by request. At minimum, each tincture here offers lab results showing the levels of cannabinoids like CBD and THC, while others offer additional tests. The more information available to consumers the better. At the same time, we admit it isn’t always easy for newcomers to interpret these lab tests.
CBD, and any cannabinoid intended to be ingested, is a food supplement. With any food or vitamin supplement, it is always best to consult a physician before making a change. This is especially true if there are current prescription medications in your life. We are not physicians and cannot diagnose, treat, or cure any symptoms. It is not recommended that pregnant or breastfeeding women ingest CBD as there is simply not enough research to determine the impact to the child. With that said, all mammals can see benefits from CBD as we all have the same endocannabinoid system that cannabinoids like CBD can support.
For some, having more than trace amounts of Tetrahydrocannabinol (THC) might not be a big deal, but if you’re being drug tested at work, operating heavy machinery, or fall into a number of other categories, you may want to keep the THC to a bare minimum. In order to qualify as a legal hemp product, CBD oil must contain less than 0.03% THC. Look for CBD oil certified to have low levels of, or zero, THC in them. Many reputable sellers do offer products that have absolutely no THC in them at all, so if you are concerned about keeping even trace amounts of TCH out of your body, it is best to look for those products and sellers.