Quick Answer: CBDs (cannabidiols) are natural, non-psychoactive compounds found in the Cannabis sativa plant. Unlike THC, CBDs do not produce a "high." They interact with the body's endocannabinoid system and are legal in Canada under the Cannabis Act. Available as oils, capsules, gummies, and topicals, CBDs are most commonly used for stress, anxiety, and sleep support.
In This Guide
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What Are CBDs (Cannabidiols)?
If you have typed "what is CBDs" into a search engine, you are in good company. The term confuses a lot of people, and for good reason. "CBDs" is simply the plural form of cannabidiol, the full chemical name for CBD. When you see the term used in the plural, it typically refers to the broader class of cannabinoid compounds, or to CBD products generally.
Cannabidiol (CBD) is one of more than 100 naturally occurring compounds called cannabinoids found in the Cannabis sativa plant. It was first isolated by researchers in the 1940s, but it did not attract serious scientific interest until decades later. Today, it is one of the most studied plant-derived compounds in pharmacology.
CBD vs. THC: The Key Distinction
The Cannabis sativa plant contains two famous cannabinoids: CBD and THC (tetrahydrocannabinol). THC is the compound responsible for the psychoactive "high" associated with cannabis. CBD produces no such effect. Research published in Neurotherapeutics (Blessing et al., 2015) confirmed that CBD does not bind significantly to the CB1 receptors in the brain that THC activates, which is why CBD does not alter perception or cause intoxication.
In Canada, CBD became legally available to adults following the Cannabis Act, which came into force in October 2018. Health Canada regulates CBD products under the cannabis framework, which means licensed producers must meet strict quality and testing standards before their products reach consumers.
How CBDs Work in the Body
To understand what CBDs do, you need a brief introduction to the endocannabinoid system (ECS). The ECS is a biological network of receptors, enzymes, and naturally produced compounds (endocannabinoids) that helps regulate many core functions, including sleep, mood, appetite, pain, and inflammation. Every human body has one.
The ECS has two primary receptor types:
| Receptor | Location | Primary Role | CBD Interaction |
|---|---|---|---|
| CB1 | Brain and central nervous system | Mood, memory, pain, appetite | Indirect modulation (does not directly activate) |
| CB2 | Immune system, peripheral tissues | Inflammation, immune response | Indirect modulation |
Unlike THC, which directly activates CB1 receptors (producing the high), CBD works differently. It appears to modulate the ECS indirectly, inhibiting the enzyme that breaks down the body's own endocannabinoids. This allows the natural compounds your body already produces to remain active longer. CBD also interacts with serotonin receptors (5-HT1A) and TRPV1 receptors involved in pain perception, which helps explain its reported calming and anti-inflammatory properties.
Dorothy, Sleep Specialist at Mattress Miracle: "Customers come in asking about CBD fairly often. What I tell them is the same thing I'd tell anyone considering a new supplement: it's not a replacement for good sleep habits or a supportive mattress. But for some people, it seems to help take the edge off the anxiety that keeps them awake. The science is genuinely interesting, even if it's still early."
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Types of CBD: Full-Spectrum, Broad-Spectrum, and Isolate
When you shop for CBD products in Canada, you will encounter three main categories. Understanding the difference matters because they have meaningfully different compositions.
| Type | What It Contains | THC Present? | Best For |
|---|---|---|---|
| Full-Spectrum | All cannabinoids, terpenes, flavonoids from the plant | Yes (trace amounts, up to 0.3%) | Those seeking the "entourage effect" with minimal THC |
| Broad-Spectrum | Multiple cannabinoids and terpenes; THC removed | No (or undetectable) | Those who want entourage effect without any THC |
| CBD Isolate | Pure CBD only (99%+), no other plant compounds | No | Those who want precise dosing and zero THC |
The "entourage effect" is a theory suggesting that cannabinoids and terpenes work better together than in isolation. The idea is that the various compounds in cannabis amplify each other's effects. While the concept has some research support, it is not universally accepted, and isolate products work well for many people who prefer simplicity.
Buying CBD in Canada
Canadians can purchase CBD products through provincially regulated cannabis retailers or federally licensed online producers. In Ontario, the Ontario Cannabis Store (OCS) is the public retailer, though many private cannabis shops also operate across Brantford and the surrounding area. Health Canada requires licensed producers to provide certificates of analysis (COAs) for all products, so you can verify what you are actually getting.
Forms of CBD Available in Canada
CBDs come in many forms, each with different onset times and bioavailability (the percentage that actually enters your bloodstream and produces an effect).
| Form | Onset Time | Duration | Bioavailability | Notes |
|---|---|---|---|---|
| Oil/Tincture (sublingual) | 15-45 minutes | 4-6 hours | 13-35% | Held under the tongue for faster absorption |
| Capsules/Softgels | 30-90 minutes | 6-8 hours | 6-19% | Consistent dosing, slower onset |
| Edibles/Gummies | 30-120 minutes | 4-8 hours | 6-19% | Enjoyable but highly variable onset |
| Vape | 2-5 minutes | 1-3 hours | 34-56% | Fastest onset; lung health concerns for long-term use |
| Topicals (cream, balm) | 15-45 minutes (local) | 2-4 hours | Minimal systemic | Does not enter bloodstream; for localised relief |
For sleep purposes, oils, capsules, and gummies are the most commonly used. The delayed onset of capsules and gummies can make dosing tricky because it is easy to take more before the first dose has had time to work.
CBDs and Sleep: What the Research Says
The sleep connection is where most people encounter cannabidiols. Research suggests CBD may support sleep through several mechanisms, though scientists are careful to note that the evidence is still developing.
A 2019 case series published in The Permanente Journal (Shannon et al.) found that 66.7% of patients reported improved sleep scores in the first month of CBD use. Anxiety scores also improved in 79.2% of patients, which is significant because anxiety is one of the most common drivers of disrupted sleep. In another review, Babson et al. (2017) noted CBD's potential to reduce REM sleep behaviour disorder symptoms and improve sleep in people with PTSD-related nightmares.
CBD, Anxiety, and the Sleep Connection
Much of CBD's benefit for sleep appears to be indirect. Rather than acting as a sedative, CBD may help people fall asleep by reducing the anxiety and racing thoughts that prevent sleep onset. At lower doses, CBD may actually promote alertness; at higher doses (typically 150mg+), it appears to have sedative properties. This dose-dependent relationship means getting the amount right matters considerably.
It is worth being honest about what the research does not yet show. Most CBD sleep studies are small, short-term, and often uncontrolled. The Sleep Foundation notes that "much more research must be done to determine the exact effects CBD has on sleep quality." We think that is the right way to frame it: promising early evidence, but not a proven sleep cure.
If you are dealing with chronic sleep problems, CBD is one piece of the puzzle rather than the whole solution. The foundation matters too: a supportive mattress, a cool room, and consistent sleep timing are still the cornerstones of good sleep. Can CBD make you sleepy? has a deeper look at the sedation question, and using CBD as a sleep aid covers practical dosing strategies.
Dosing and Safety Considerations
Dosing CBD is not yet standardised in any clinical guideline. The general approach in research studies ranges widely. For sleep-related use, doses in studies have ranged from 25mg to 300mg per day, with most observational reports finding benefit in the 25-75mg range taken 30-60 minutes before bed.
Practical Starting Points for Canadians
Most experienced users suggest starting at 15-25mg and waiting at least one week before adjusting. Keep a sleep journal during this period. Track how long it takes to fall asleep, whether you wake during the night, and how you feel in the morning. Small adjustments over time are more informative than large dose jumps. Always speak with a pharmacist or physician before starting CBD, especially if you take other medications.
CBD is generally considered well-tolerated by most adults. Common mild side effects reported in research include drowsiness, dry mouth, reduced appetite, and diarrhoea at higher doses. More important are the drug interactions: CBD inhibits cytochrome P450 enzymes in the liver, which means it can affect how your body metabolises many prescription drugs, including blood thinners, antidepressants, and anti-seizure medications. If you take any regular medication, checking with a physician before using CBDs is not optional.
| Safety Consideration | Details |
|---|---|
| Drug interactions | CBD inhibits CYP450 enzymes; may alter blood levels of many medications |
| Pregnancy/nursing | Health Canada advises against use; limited safety data |
| Liver effects | High doses linked to elevated liver enzymes in some studies; monitor with doctor |
| Psychoactive risk | CBD alone: none. Full-spectrum products with trace THC: minimal but possible in sensitive individuals |
| Quality control | Buy only from Health Canada-licensed producers. Request COA to verify CBD content |
For broader context on natural supplements for sleep, see our guide to the best supplements for sleep in Canada and our overview of whether CBD makes you tired.
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Call 519-770-0001Frequently Asked Questions
What does "CBDs" mean -- is it different from CBD?
Not meaningfully. "CBDs" is simply the plural form of cannabidiol, and people use it to refer to the class of cannabinoid compounds or to CBD products generally. In most consumer contexts, CBDs and CBD refer to the same thing: the non-psychoactive cannabinoid derived from Cannabis sativa.
Is CBD legal in Canada?
Yes. CBD became legal in Canada under the Cannabis Act in October 2018. Adults can purchase CBD products from provincially licensed retailers or federally licensed online producers. In Ontario, the OCS is the main public channel. Health Canada requires all licensed producers to meet strict testing and labelling standards.
Will CBD make me fail a drug test?
Pure CBD isolate is unlikely to trigger a positive result for THC on standard drug tests. However, full-spectrum CBD products contain trace amounts of THC (up to 0.3%), and in rare cases this can accumulate enough to register on a test. If you are subject to workplace drug testing, choose a broad-spectrum or isolate product and inform your employer if needed.
How does CBD compare to melatonin for sleep?
They work through completely different mechanisms. Melatonin directly regulates your circadian rhythm by signalling to your body that it is time to sleep -- it is most useful for jet lag, shift work, or delayed sleep phase. CBD appears to reduce anxiety and promote relaxation rather than directly triggering sleep. Some people use both together; speak with a healthcare provider about what makes sense for your specific sleep pattern.
Can I ask about CBD at Mattress Miracle?
We are a mattress store, not a pharmacy, so we cannot give medical advice about supplements. What we can do is talk with you about how your sleep environment affects your rest. If you are using CBD to address poor sleep and it is not helping as much as you hoped, the issue might partly be your mattress, pillow, or room temperature. Stop by our Brantford showroom on West Street and we will have an honest conversation about what might actually help.
Sources
- Blessing, E.M., Steenkamp, M.M., Manzanares, J., & Marmar, C.R. (2015). Cannabidiol as a potential treatment for anxiety disorders. Neurotherapeutics, 12(4), 825-836. doi.org/10.1007/s13311-015-0387-1
- Shannon, S., Lewis, N., Lee, H., & Hughes, S. (2019). Cannabidiol in anxiety and sleep: A large case series. The Permanente Journal, 23, 18-041. doi.org/10.7812/TPP/18-041
- Babson, K.A., Sottile, J., & Morabito, D. (2017). Cannabis, cannabinoids, and sleep: A review of the literature. Current Psychiatry Reports, 19(4), 23. doi.org/10.1007/s11920-017-0775-9
- Zuardi, A.W. (2008). Cannabidiol: From an inactive cannabinoid to a drug with wide spectrum of action. Revista Brasileira de Psiquiatria, 30(3), 271-280. doi.org/10.1590/s1516-44462008000300015
- Health Canada. (2023). Cannabis regulations and cannabis for medical purposes. Government of Canada. canada.ca/en/health-canada/topics/cannabis
- Mechoulam, R., & Parker, L.A. (2013). The endocannabinoid system and the brain. Annual Review of Psychology, 64, 21-47. doi.org/10.1146/annurev-psych-113011-143739
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