If you’re shopping cannabis flower in Canada, you’ll see three letters a lot: THC, CBD, and CBG.
They all come from the cannabis plant.
They all work in your body in related ways.
But they feel different and serve different goals.

This guide explains THC vs CBD, answers what is CBG in weed, and shows how THC and CBD can be used on their own or together. You’ll also learn about dosing basics, safety, and Canadian context so you can shop smarter at Get Kush.

Quick Definitions

THC (tetrahydrocannabinol) is the main compound that causes a high. It binds to brain receptors and changes how you think, feel, and move. CBD (cannabidiol) is not intoxicating. It can still affect the brain and body, but it won’t make you feel “stoned.” CBG (cannabigerol) is also non-intoxicating and appears in smaller amounts in most strains.

CBG forms from CBGA, a “parent” acid that the plant converts into THCA and CBDA (which become THC and CBD when heated). That’s why CBG is often called the “mother cannabinoid.”

THC vs CBD: The Core Differences

People often ask for the difference between CBD and THC in plain language. Here it is:

Feel: THC can produce euphoria, altered senses, and impairment. CBD does not intoxicate.
Everyday uses: THC products are often chosen for mood lift, appetite, and stronger body effects. CBD is commonly used for calm, recovery, and sleep support. (Evidence for non-prescription uses is still developing; more on that below.)
Medical evidence: A purified, prescription form of CBD (Epidiolex) is approved to treat certain seizure disorders. There’s no equivalent THC-only drug with the same approvals in Canada or the U.S.
Impairment: THC impairs driving and reaction time. That risk lasts hours after use. CBD alone is not linked to intoxication. Never drive high.

If you want a noticeable high, you’re looking at THC. If you want the benefits of cannabis without intoxication, start with CBD.

What Is CBG In Weed?

CBG is a minor cannabinoid you’ll see more often now. The plant makes CBGA first, then enzymes turn CBGA into the acidic forms of THC and CBD. When those acids are heated (smoked, vaped, or baked), they “decarboxylate” into the cannabinoids you know. CBG itself is made when CBGA decarboxylates before it’s diverted into other pathways.

Early lab and review papers suggest CBG acts on several receptor systems and may have unique effects compared to both THC and CBD. But human evidence is still limited, and most claims are preliminary. Think of CBG as interesting and promising—but not as well-studied as THC or CBD yet.

How They Work In Your Body (In Simple Terms)

Your body has an endocannabinoid system (ECS).
It includes CB1 and CB2 receptors and chemicals your body makes on its own.

THC partially activates CB1 receptors in the brain. That’s why it can change perception and coordination.
CBD does not intoxicate and seems to modulate multiple targets (including serotonin and ECS pathways) rather than strongly turning CB1 “on.” Effects are gentler and often more body-focused.
CBG interacts with several receptor types. Researchers are still mapping how that translates to human effects.

Formats, Onset, And Duration

Different product types change how fast you feel effects and how long they last:

Inhaled (smoke or weed vape): effects start fast—within minutes—and usually fade in 1–3 hours.
Edibles and drinks: slow to start—often 30 minutes to 2+ hours—with effects that can last 6–12 hours. Start low, wait, and avoid redosing too soon.
Sublingual oils/tinctures: faster than edibles for many people (often within 15–45 minutes), but usually shorter than a full edible. (Timing varies by person and product.)

Tip for Canadians: Health Canada’s harm-reduction advice is “start low and go slow.” That’s smart for any new product, especially edibles.

Potential Benefits (And What The Evidence Says)

Let’s keep this grounded.

CBD has strong evidence for specific epilepsies. The FDA-approved CBD medicine (Epidiolex) treats seizures in Lennox-Gastaut syndrome, Dravet syndrome, and tuberous sclerosis complex. That’s high-quality, prescription-level evidence for CBD in those conditions. It does not mean all CBD products treat epilepsy.
THC and whole-plant cannabis: Research suggests potential benefits for nausea, appetite, and some types of pain, but results can be mixed and side effects limit use. Canadian guidance notes the evidence base is uneven outside approved products.
CBG: Lab and animal studies show interesting signals, but human trials are scarce. Treat real-world claims with caution for now.

Always talk to a health professional if you have a medical condition or take medications.

THC and CBD Together

You’ll often see products with both THC and CBD. Some people find CBD softens THC’s edge. Others feel no difference—or even stronger effects—depending on dose and timing. Canadian clinical guidance sums it up well: we need more careful study to know exactly how CBD changes THC’s effects in people.

If you’re curious, try balanced products (for example, 1:1 THC:CBD). Go low. Take notes on dose, timing, and how you feel.

Safety, Side Effects, And When To Avoid Use

Use cannabis with awareness. Side effects depend on dose, product, and you.

THC: may cause anxiety, fast heart rate, dry mouth, red eyes, memory issues, and impaired driving/coordination. Risk rises with higher THC. Never drive after using THC.
CBD: is not intoxicating. It can still cause drowsiness, diarrhea, or changes in appetite at higher doses, and it can interact with medicines (see below).
CBG: early data shows it’s non-intoxicating, but we lack robust human safety studies.
Pregnancy and breastfeeding: Health Canada advises not using cannabis during pregnancy or while breastfeeding.
Driving: Canada has strict impaired-driving laws. THC can affect you long after you feel “back to normal.” Don’t risk it.

Medicine interactions (important):
THC and CBD are processed by liver enzymes. CBD, in particular, can inhibit CYP2C19 and affect levels of drugs like clobazam; it also involves CYP3A4 and other enzymes. If you take prescriptions (especially seizure meds, blood thinners, or heart medicines), talk to your pharmacist or clinician before using cannabinoids.

One Quick Comparison You Can Save

Want a high? Choose THC.
Want calm without intoxication? Choose CBD.
Curious about new options? Try CBG, but keep expectations modest.
Sensitive to THC? Start with CBD-forward or balanced ratios.
Need long-lasting effects? Consider cannabis edibles—but start low and go slow.
Need fast relief and easy control? Inhale or use sublingual oil.
Driving soon? Avoid THC entirely.

Dosing Basics (Practical And Cautious)

There’s no one-size-fits-all dose. Your body size, past use, product type, and even what you ate can change the outcome.

With inhaled THC, start with a very small puff. Wait at least 10–15 minutes before more. Effects rise quickly and fade within a few hours.
With edible THC, beginners often do well with 1–2.5 mg THC to start (some even less), then wait at least 2 hours before considering more. Effects can last the rest of the evening. Government guidance stresses patience and slow titration.
With CBD, many people begin around 5–10 mg and adjust over days. If you take medications, ask your pharmacist first because of enzyme interactions.
For CBG, there’s no standard human dosing. Treat it like CBD: begin low and log your response. Evidence is early.

Canadian Context: Legal And Safer Purchasing

Buying from legal retailers helps ensure labelled potency and quality controls. Illegal products can have unknown THC levels or contaminants. Choose licensed sources and follow provincial rules on age and possession.

Get Kush serves Canadians with regulated options and clear labelling, so you can compare products by cannabinoid content and format with confidence.

Picking Your First (Or Next) Product

Here’s a simple path:

Name your goal. Relax? Sleep? Focus? Relief?
Match the cannabinoid.
- Relaxed but clear? Try CBD or CBD-forward.
- Euphoria and body melt? Try THC, starting low.
- Curious and non-intoxicating? Explore CBG.
Choose the format.
- Inhale for fast feedback.
- Edible for long, steady effects (but slow onset).
- Oil/tincture for a middle ground.
Start low, go slow. Keep notes on dose, timing, and feel.

At Get Kush, you can filter by THC, CBD, or CBG content and pick the exact format you prefer. That makes side-by-side comparison simple and helps you find your sweet spot.

FAQs

Will CBG get me high?
No. CBG is considered non-intoxicating. Human research is still limited, so learn your response with low doses first.

Does CBD really work?
For certain epilepsies, yes—there’s a prescription-grade CBD medicine with strong evidence. For everyday wellness uses, evidence is mixed and still growing.

How long should I wait after an edible before taking more?
At least 2 hours. Edibles hit late and last a long time—up to 6–12 hours.

Can I drive after using THC?
No. THC impairs attention and reaction time. Canada enforces drug-impaired driving laws. Plan a ride instead.

Can CBD or THC interact with my meds?
Yes, especially CBD. Ask your pharmacist or clinician before you start.

Bottom Line

THC delivers the classic high and stronger body effects, with a clear impairment risk.
CBD is non-intoxicating and best studied for certain seizure disorders; everyday uses vary by person.
CBG is a newer, non-intoxicating option with promising lab science but limited human data.

Use format and dose to shape your experience. Start low and go slow—especially with edibles. Shop legal to get accurate potency and quality controls. If you’re in Canada and want trusted options, explore THC, CBD, and CBG products at GetKush.cc so you can compare transparently and choose with confidence.

REFERENCES:

Government of Canada. (2021, March 11). Cannabis and your health. Available at: https://www.canada.ca/en/services/health/campaigns/cannabis/health-effects.html

J. Kearsey, C. Yan, N. Prandi, H. S. Toogood, E. Takano, N. S. Scrutton. (2023, May 27). Biosynthesis of cannabigerol and cannabigerolic acid: the gateways to further cannabinoid production. Available at: https://academic.oup.com/synbio/article/8/1/ysad010/7181267

Dr. Leslie Lars Iversen, CBE FRS MAE