CBC (cannabichromene) and CBD (cannabidiol) are two non-intoxicating compounds found naturally in the cannabis plant. Neither one produces a high, and both interact with your body’s endocannabinoid system, but they work through different pathways and have very different levels of scientific backing. CBD is widely available, well-studied, and used in everything from tinctures to FDA-approved medication. CBC is far less known, found in much smaller concentrations in the plant, and still in the early stages of research.
How CBC and CBD Are Made in the Plant
Both CBC and CBD start from the same parent molecule: cannabigerolic acid, often called the “stem cell” cannabinoid because it’s the precursor to most other cannabinoids. From there, different enzymes push CBGA down different paths. One enzyme converts it into cannabidiolic acid (CBDA), which becomes CBD when heated. A different enzyme converts it into cannabichromenic acid (CBCA), which becomes CBC when exposed to temperatures above 105°C.
This shared origin is why the two compounds often appear together in full-spectrum cannabis products, though in very different amounts. CBD is typically one of the most abundant cannabinoids in hemp, while CBC shows up in much smaller concentrations.
What CBD Does in the Body
CBD interacts broadly with the endocannabinoid system and several other receptor systems throughout the body. It’s the most researched non-intoxicating cannabinoid, with one FDA-approved prescription drug (for certain types of epilepsy) already on the market. People commonly use CBD products for pain, anxiety, sleep, and inflammation.
The evidence for pain relief, however, is more complicated than marketing suggests. A 2024 review looked at 16 randomized controlled trials using various CBD formulations, with doses ranging from 6 to 1,600 mg and treatment lasting anywhere from a single dose to 12 weeks. Of those 16 trials, 15 found no significant difference in perceived pain between CBD and a placebo. The one trial that did show a benefit had only 18 participants. A separate 2022 review in the BMJ found that non-inhaled cannabis products (including but not limited to CBD) produced a slight improvement in pain, but you’d need to treat 10 people for one of them to experience a meaningful reduction, and dizziness was a common side effect.
That doesn’t mean CBD is useless for pain. It means the current clinical evidence is weaker than many consumers assume, and the strongest support for CBD remains in seizure disorders.
What CBC Does in the Body
CBC works through a different set of pathways. Rather than interacting primarily with the main cannabinoid receptors (CB1 and CB2), CBC appears to activate pain and inflammation-related channels called TRPA1 and TRPV1. These are the same channels involved in sensing temperature and irritation. In one animal study, inhaled CBC reduced inflammatory signaling and cytokine production in a mouse model of acute respiratory distress syndrome through these channels.
CBC has also shown effects on gut inflammation. In animal models, it reduced inflammation-driven overactivity in the small intestine, and interestingly, this effect occurred independently of both the main cannabinoid receptors and TRPA1, suggesting CBC may work through additional pathways researchers haven’t fully identified yet.
One of the more intriguing findings involves brain cells. A lab study found that CBC improved the viability of mouse neural stem cells during differentiation at a concentration of 1 micromolar. The compound appeared to keep these stem cells in a more stem-like state rather than letting them turn into a specific type of support cell called astroglia. This happened through signaling involving adenosine and ATP, two molecules your body uses for energy and cell communication. While this is interesting for understanding how CBC works at a cellular level, it’s a long way from showing that CBC supplements improve brain health in people.
Key Differences Between CBC and CBD
- Psychoactive effects: Neither CBC nor CBD gets you high. CBC doesn’t bind well to CB1 receptors in the brain, and CBD actively works against the intoxicating effects of THC in some contexts.
- Abundance: CBD is one of the most plentiful cannabinoids in hemp. CBC is present in very low concentrations, making it harder and more expensive to extract.
- Research depth: CBD has been studied in dozens of clinical trials involving human participants. CBC research is almost entirely limited to animal models and lab studies.
- Receptor targets: CBD has a broad mechanism, influencing serotonin receptors, cannabinoid receptors, and other systems. CBC acts more selectively, primarily through TRPA1 and TRPV1 channels, with possible involvement of adenosine receptors.
- Potency: Comparing “potency” between the two doesn’t quite make sense the way it does with THC. Since neither is intoxicating, potency really refers to how effectively each one activates its target pathways, and those pathways are different.
Safety Considerations
CBD has a generally favorable safety profile at moderate doses, but it’s not without risk. In an FDA-conducted randomized trial, participants took CBD at 2.5 mg/kg twice daily (roughly 250 to 550 mg per day depending on body weight) for 28 days. About 5.6% of those taking CBD developed liver enzyme elevations more than three times the normal upper limit, compared to 0% in the placebo group. Nearly 5% met criteria for potential drug-induced liver injury. The good news: none of these participants had symptoms, and liver enzymes returned to normal within one to two weeks after stopping CBD. No hormonal changes were observed.
These findings matter most for people taking higher doses or using CBD alongside other medications that stress the liver. At the lower doses found in most consumer products, the risk is considerably smaller, but it’s worth being aware of if you’re taking CBD daily.
For CBC, safety data is essentially nonexistent in humans. There isn’t enough reliable information to establish an appropriate dose, recommended range, or side effect profile. WebMD’s assessment is blunt: no one knows what a safe or effective dose of CBC looks like yet.
Product Availability
CBD is widely sold as oils, capsules, gummies, topicals, and more. You’ll find it in isolate form (pure CBD), broad-spectrum (multiple cannabinoids but no THC), and full-spectrum (all cannabinoids including trace THC). CBC most commonly shows up as a minor component in full-spectrum products rather than as a standalone supplement, though some companies do sell CBC-specific oils and tinctures. Because CBC is present in such small amounts in the plant, these products typically cost more and are harder to verify for quality.
If you’re seeing CBC listed on a product label alongside CBD, it usually means the product is full-spectrum and contains the naturally occurring mix of cannabinoids from hemp. The CBC content in these products is typically quite small relative to the CBD content.