Cannabis is a flowering plant used for both recreational and medicinal purposes. Three main types (species, subspecies, or varieties) of the cannabis genus have been recognized: Cannabis sativa, Cannabis indica, and Cannabis ruderalis. Δ(9)-Tetrahydrocannabinol is the main psychoactive/addictive ingredient of cannabis; the effects of this compound are most commonly associated with binding to the cannabinoid receptor 1 (Hoffman & Lupica, 2013).
Leafly is the world’s largest cannabis information resource, empowering people in legal cannabis markets to learn about the right products for their lifestyle and wellness needs. Our team of cannabis professionals collectively share years of experience in all corners of the market, from growing and retail, to science and medicine, to data and technology.
I was very skeptical about this product, was on a trip to San Antonio where I was shopping. The manager was telling me and my sister in law about this cream. I was thinking another gimmick. But from the moment I tried it, my hands didn’t hurt, no numbness, I was great for about 12 hours. You can ask my family anything related to a marijuana plant, I am against. I don’t advocate any type of drug. but this product is 100% THC free. You can pass a drug test. I apply it in the morning and can type all day, help pt’s . I apply it before bed to my hands , wrist, lower back and I do not hurt. I sleep all night. tremendous thanks to the lady that introduced me to this product. LOVE LOVE LOVE this product
Cannabis is a generic term used to denote the several psychoactive preparations of the plant Cannabis sativa. The major psychoactive consituent in cannabis is ∆-9 tetrahydrocannabinol (THC). Compounds which are structurally similar to THC are referred to as cannabinoids. In addition, a number of recently identified compounds that differ structurally from cannabinoids nevertheless share many of their pharmacological properties. The Mexican term 'marijuana' is frequently used in referring to cannabis leaves or other crude plant material in many countries. The unpollinated female plants are called hashish. Cannabis oil (hashish oil) is a concentrate of cannabinoids obtained by solvent extraction of the crude plant material or of the resin.
If you haven’t been bombarded with CBD marketing or raves about it from friends, get ready. This extract—which comes from either marijuana or its industrial cousin, hemp—is popping up everywhere. There are CBD capsules, tinctures, and liquids for vaping plus CBD-infused lotions, beauty products, snacks, coffee, and even vaginal suppositories. Already some 1,000 brands of CBD products are available in stores—and online in states that don’t have lenient cannabis laws. This is a tiny fraction of what’s to come: The CBD market is poised to exceed $1 billion by 2020, per the Chicago-based research firm Brightfield Group.
The Gateway Hypothesis states that cannabis use increases the probability of trying "harder" drugs. The hypothesis has been hotly debated as it is regarded by some as the primary rationale for the United States prohibition on cannabis use.[261][262] A Pew Research Center poll found that political opposition to marijuana use was significantly associated with concerns about health effects and whether legalization would increase marijuana use by children.[263]
CBC is another lesser-known yet still crucial cannabinoid in marijuana, especially from a therapeutic perspective. While bereft of the psychoactive quality of THC (and to a lesser extent THCV), CBC is gaining popularity as an anxiety reducer. While research on cannabichromene lags behind others, there’s good reason to continue looking into its potential as a medicine.
In Canada, the methodology used for analyses and sample collection for THC analysis of hemp plantings is standardized (at the Health Canada/Therapeutics Program/Hemp web site at www.hc-sc.gc.ca/hpb-dgps/therapeut/htmleng/hemp.html, see “Industrial Hemp Technical Manual” for procedures on sampling plant materials and chemical procedures for determining THC levels). The regulations require that one of the dozen independent laboratories licensed for the purpose conduct the analyses and report the results to Health Canada. Sample collection is also normally carried out by an independent authorized firm. The Canadian system of monitoring THC content has rigidly limited hemp cultivation to cultivars that consistently develop THC levels below 0.3%.
Selective breeding of cannabis plants has expanded and diversified as commercial and therapeutic markets develop. Some growers in the U.S. succeeded in lowering the proportion of CBD-to-THC to accommodate customers who preferred varietals that were more mind-altering due to the higher THC and lower CBD content.[57] Hemp is classified as any part of the cannabis plant containing no more than 0.3% THC in dry weight form (not liquid or extracted form).[58]
There is some speculation that George Washington smoked the flower of the cannabis plant in order to achieve a recreational high ("Like all farmers, Washington probably sampled the quality and potency of what he grew, and he may have used this hemp to treat his chronic tooth aches"),[56] but there is no evidence in any of his writings that he grew hemp for anything other than industrial purposes. It is sometimes supposed that an excerpt from Washington's diary, which reads "Began to seperate [sic] the Male from the Female hemp at Do.&—rather too late" is evidence that he was trying to grow female plants for the THC found in the flowers. However, the editorial remark accompanying the diary states that "This may arise from their [the male] being coarser, and the stalks larger"[122] In subsequent days, he describes soaking the hemp[123] (to make the fibers usable) and harvesting the seeds,[124] suggesting that he was growing hemp for industrial purposes, not recreational.
The tricky part is that there's some evidence suggesting CBD works best for pain when combined with a little THC, says Dr. Danesh. "Depending on what type of pain you have, you might be able to do just CBD, but sometimes you need CBD and THC." This makes accessing a product that will actually help you more difficult due to different regulations in each state. In New York, where Dr. Danesh practices, for example, CBD is available over the counter. But as soon as you add THC, you need a prescription.

Cannabis is a generic term used to denote the several psychoactive preparations of the plant Cannabis sativa. The major psychoactive consituent in cannabis is ∆-9 tetrahydrocannabinol (THC). Compounds which are structurally similar to THC are referred to as cannabinoids. In addition, a number of recently identified compounds that differ structurally from cannabinoids nevertheless share many of their pharmacological properties. The Mexican term 'marijuana' is frequently used in referring to cannabis leaves or other crude plant material in many countries. The unpollinated female plants are called hashish. Cannabis oil (hashish oil) is a concentrate of cannabinoids obtained by solvent extraction of the crude plant material or of the resin.
CBD oil contains CBD (and often other active compounds) in a carrier oil. There are a number of forms of CBD oil, including softgel capsules, tinctures, and under-the-tongue sprays. Some forms of CBD oil can also be applied directly to the skin, in the form of products like creams and salves. The concentration of CBD varies from product to product.
In 2017, the cultivated area for hemp in the Prairie provinces include Saskatchewan with more than 56,000 acres (23,000 ha), Alberta with 45,000 acres (18,000 ha), and Manitoba with 30,000 acres (12,000 ha).[84] Canadian hemp is cultivated mostly for its food value as hulled hemp seeds, hemp oils and hemp protein powders, with only a small fraction devoted to production of hemp fiber used for construction and insulation.[84]
There has been a lot of hype recently, especially throughout the media, regarding the rising-in-popularity CBD, but still plenty of confusion may exist regarding this naturally occurring chemical’s abilities, composition and why exactly it works. Probably the two most common topical forms of CBD are oils and creams, so these are the two products we will be focusing on.
While animal studies and particularly those with canines are still in its infancy when it comes to using CBD for dogs, it's very clear that we're heading in the right direction. There are more health benefits of using CBD oil for dogs than we have initially thought a decade ago, and it's possible that even more will be discovered as research continues.

Molecular analytical techniques developed in the late 20th century are being applied to questions of taxonomic classification. This has resulted in many reclassifications based on evolutionary systematics. Several studies of Random Amplified Polymorphic DNA (RAPD) and other types of genetic markers have been conducted on drug and fiber strains of Cannabis, primarily for plant breeding and forensic purposes.[74][75][25][76][77] Dutch Cannabis researcher E.P.M. de Meijer and coworkers described some of their RAPD studies as showing an "extremely high" degree of genetic polymorphism between and within populations, suggesting a high degree of potential variation for selection, even in heavily selected hemp cultivars.[37] They also commented that these analyses confirm the continuity of the Cannabis gene pool throughout the studied accessions, and provide further confirmation that the genus consists of a single species, although theirs was not a systematic study per se.


In the United States, cannabis is overall the number four value crop, and is number one or two in many states including California, New York and Florida, averaging $3,000 per pound ($6,600/kg).[256][257] Some believe it generates an estimated $36 billion market.[258] Some have argued that this estimate is methodologically flawed, and makes unrealistic assumptions about the level of marijuana consumption. Other estimates claiming to correct for this flaw claim that the market is between $2.1-$4.3 billion.[249] The United Nations Office on Drugs and Crime claims in its 2008 World Drug Report that typical U.S. retail prices are $10–15 per gram (approximately $280–420 per ounce). Street prices in North America are known to range from about $40–$400 per ounce ($1.4–$14/g), depending on quality.[259]

Infusions: Research and opportunity have driven chefs and chemists to infuse CBD into all sorts of readily usable products, such as edibles to elixirs, sublingual sprays, capsules and even topicals. Much like concentrates, each infusion sports specific combinations or isolations of CBD, THC, and other cannabinoids, allowing users to pick and choose products that suit their exact needs. CBD topicals, for example, are incredibly effective when applied to surface-level problems like bruises, joint aches, and headaches, and have been scientifically proven to successfully combat skin-based issues including pruritus with far broader implications.


There are many varieties of cannabis infusions owing to the variety of non-volatile solvents used.[189] The plant material is mixed with the solvent and then pressed and filtered to express the oils of the plant into the solvent. Examples of solvents used in this process are cocoa butter, dairy butter, cooking oil, glycerine, and skin moisturizers. Depending on the solvent, these may be used in cannabis foods or applied topically.[190]

Hemp can be used as a "mop crop" to clear impurities out of wastewater, such as sewage effluent, excessive phosphorus from chicken litter, or other unwanted substances or chemicals. Additionally, hemp is being used to clean contaminants at the Chernobyl nuclear disaster site, by way of a process which is known as phytoremediation—the process of clearing radioisotopes and a variety of other toxins from the soil, water, and air.[46]
With respect to fiber, a “composite” is often defined as a material consisting of 30%–70% fiber and 70%–30% matrix (Bolton 1995). However, in North America particleboards and fiberboards, which generally contain less than 10% adhesive or matrix, are sometimes referred to as composites. This section addresses plastic-type composites. In plastics, fibers are introduced to improve physical properties such as stiffness, impact resistance, bending and tensile strength. Man-made fibers of glass, kevlar and carbon are most commonly used today, but plant fibers offer considerable cost savings along with comparable strength properties.
Because the extraction used to make our CBD oil yields a full spectrum extract, our hemp extracts contain over 80 different phyto-cannabinoids, including CBD, CBC, CBG, CBG-A, CBC-A, and CBN, among many others. In addition to the cannabinoids naturally present in our industrial hemp extracts, there are many other types of natural molecules such as amino acids, carbohydrates, vitamins, omega fatty acids, and trace minerals. Additionally, beta-carotene, chlorophyll, flavonoids, ketones, nitrogenous compounds, alkanes, glycosides, pigments, water, and terpenes are all present in our CBD hemp.
Running a profitable and legal cannabis dispensary is entirely possible but not at all easy. The regulatory labrynth is tough to navigate, startup costs are usually significant, the taxes are brutal and the competition is fierce. Building a successful cannabis business means understanding, before you even get started, the many ways this industry is unique.
Cannabis use and psychotic symptoms and disorders are associated in the general population (see, for example, Degenhardt and Hall, 2001; Tien and Anthony, 1990) and in clinical samples of patients with schizophrenia (Mueser et al., 1992; Warner et al., 1994; Hambrecht and Hafner, 1996). The major contending hypotheses to explain the association have been: (i) that cannabis use precipitates schizophrenia in persons who are otherwise vulnerable; (ii) cannabis use is a form of self-medication for schizophrenia; and (iii) that the association arises from uncontrolled residual confounding by variables that predict an increased risk of cannabis use and of schizophrenia (Macleod et al., 2004).
Cultivated in at least 30 countries, monikers for the hemp plant often allude to its origin or use, such as Manila hemp (abacá, Musa textilis), sisal hemp (Agave sisalana), Indian hemp (Apocynumcannabinum) and New Zealand hemp (Phormiumtenax). Worldwide, hemp seed production alone has soared from around 33,000 metric tons in the late ’90s to more than 100,000 metric tons annually between 2005 and 2011.

Cannabidiol can be taken into the body in multiple ways, including by inhalation of cannabis smoke or vapor, as an aerosol spray into the cheek, and by mouth. It may be supplied as CBD oil containing only CBD as the active ingredient (no added tetrahydrocannabinol [THC] or terpenes), a full-plant CBD-dominant hemp extract oil, capsules, dried cannabis, or as a prescription liquid solution.[2] CBD does not have the same psychoactivity as THC,[9][10] and may affect the actions of THC.[7][8][9][11] Although in vitro studies indicate CBD may interact with different biological targets, including cannabinoid receptors and other neurotransmitter receptors,[9][12]as of 2018 the mechanism of action for its biological effects has not been determined.[8][9]
CBC is another lesser-known yet still crucial cannabinoid in marijuana, especially from a therapeutic perspective. While bereft of the psychoactive quality of THC (and to a lesser extent THCV), CBC is gaining popularity as an anxiety reducer. While research on cannabichromene lags behind others, there’s good reason to continue looking into its potential as a medicine.

Hemp plants can be vulnerable to various pathogens, including bacteria, fungi, nematodes, viruses and other miscellaneous pathogens. Such diseases often lead to reduced fiber quality, stunted growth, and death of the plant. These diseases rarely affect the yield of a hemp field, so hemp production is not traditionally dependent on the use of pesticides.
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