Cannabis produces over 100 cannabinoids. THC and CBD get most of the attention. The minor cannabinoids do real work too, and they show up on COAs in increasingly meaningful concentrations as breeders select for them.
Here is what CBG, CBN, and CBC actually do, where they come from, and how to read them on a hemp lab report.
The Cannabinoid Family Tree
All cannabinoids in cannabis trace back to a single precursor compound: CBGA (cannabigerolic acid). The plant produces CBGA, then enzymes convert it into different acidic cannabinoids depending on the plant's genetics:
- CBGA → THCA (becomes THC when heated)
- CBGA → CBDA (becomes CBD when heated)
- CBGA → CBCA (becomes CBC when heated)
CBG itself is what's left when CBGA doesn't get converted. That's why some breeders select for "CBG-dominant" cultivars: the plant retains more of the precursor instead of converting it to other cannabinoids.
CBG (Cannabigerol)
What it is: The "mother cannabinoid." Most other cannabinoids start as CBGA, which converts to CBG when heated.
Where it comes from: Most hemp cultivars contain less than 1% CBG. CBG-dominant cultivars (selectively bred) can hit 15% or more.
What it does:
- Non-intoxicating. Will not get you high.
- Interacts with CB1 and CB2 receptors but binds weakly. Most of its effects come from action on other receptor systems.
- Research suggests anti-inflammatory and antibacterial properties.
- Often associated with subtle alertness and focus when consumed alone.
CBG is increasingly popular as a daytime alternative to CBD. Some users report sharper focus without the drowsiness CBD can produce in higher doses.
CBN (Cannabinol)
What it is: The cannabinoid THC becomes when it ages. CBN is created when THC is exposed to oxygen and time.
Where it comes from: Old or improperly stored cannabis. CBN levels in fresh flower are typically very low. Properly cured and stored flower keeps CBN low.
What it does:
- Mildly intoxicating but at much lower potency than THC. Estimated to be roughly 10% as potent as delta-9 THC.
- Often marketed for sleep, particularly in CBN-rich edibles and tinctures.
- The "CBN makes you sleepy" claim has weaker scientific support than commonly believed. Some research suggests the sedation associated with old cannabis may be from terpene degradation, not CBN itself.
CBN-targeted products are growing in popularity for nighttime use. Whether they outperform a similar dose of THC is an open question for researchers.
CBC (Cannabichromene)
What it is: The third most-studied non-THC cannabinoid behind CBD and CBG.
Where it comes from: Most hemp cultivars contain CBC at less than 1%, usually under 0.5%. Few cultivars are bred specifically for CBC dominance.
What it does:
- Non-intoxicating.
- Does not bind well to CB1 or CB2 receptors. Most effects come from action on TRPV1 and TRPA1 receptors (the same receptors capsaicin from chili peppers acts on).
- Research suggests anti-inflammatory and pain-modulating effects.
- Often included in full-spectrum products to support the entourage effect.
CBC is rarely the star of a product. It typically shows up as a supporting cannabinoid in full-spectrum hemp extracts.
Other Minor Cannabinoids Worth Knowing
CBDV (Cannabidivarin): Structural cousin of CBD. Non-intoxicating. Studied for potential neurological applications.
THCV (Tetrahydrocannabivarin): Structurally similar to THC but with different effects. At low doses, THCV is non-intoxicating and may suppress appetite. At high doses, it becomes intoxicating.
CBGA, CBDA, THCA: The acidic precursors found in raw cannabis. Non-intoxicating in their acidic form. Convert to active cannabinoids (CBG, CBD, THC) when heated.
How to Find These on a COA
A complete cannabinoid panel on a COA shows percentages or milligrams for each cannabinoid tested. Look for:
- Total cannabinoid percentage (sum of all detected cannabinoids).
- Individual percentages for THC, CBD, CBG, CBN, CBC, CBDA, THCA at minimum.
- Some labs also report CBDV, THCV, CBL, CBT.
A "broad-spectrum" or "full-spectrum" hemp product should show meaningful levels of multiple cannabinoids. An "isolate" product will show one cannabinoid (usually CBD) at high purity with everything else near zero.
The Entourage Effect
The leading hypothesis for why full-spectrum hemp products feel different than isolated cannabinoids: cannabinoids and terpenes interact to shape effects. A 2 mg dose of THC alongside CBG, CBN, CBC, and a varied terpene profile will feel different than 2 mg of pure THC.
Research is still developing on the specifics. The practical takeaway: full-spectrum hemp products typically deliver a more nuanced experience than isolate-based products at the same THC dose.
What This Means for Hemp Buyers
If you are reading hemp labels:
- Look for products with diverse cannabinoid profiles, not just THC content.
- CBG-dominant products are a fresh option for daytime use.
- CBN-rich products are typically marketed for sleep, with mixed scientific support.
- CBC and other minor cannabinoids are most useful as part of a full-spectrum blend.
For more on hemp's cannabinoid math under Virginia's product caps, see our breakdown of Virginia's 2 mg hemp cap.
Bottom Line
THC and CBD are the headline cannabinoids. CBG, CBN, and CBC do real work in the background. The minor cannabinoids matter most as part of a full-spectrum profile, where they likely interact with THC and CBD to shape the experience. The COA is the only reliable way to see which cannabinoids are actually in a product and at what levels.
For more on what to look for on a hemp lab report, see our how to read a hemp COA guide.
This article is informational and not legal advice. It is not medical advice.
