CBG vs CBD: Differences, Similarities and Whether to Take Them Together

The short answer on CBG vs CBD is abundance and origin. CBD is the cannabinoid hemp produces in large amounts, while CBG is the small amount left over from CBGA, the acid the plant uses to build every other cannabinoid. Both are non-intoxicating, and both come from the same plant.

That single difference explains most of what follows: why CBG products cost more, why the two are studied differently, and why so many people end up taking them together. This guide is for anyone comparing a CBD oil against a CBG oil and trying to work out which one is worth the money.

What is CBG?

CBG stands for cannabigerol. It is one of more than 120 cannabinoids identified in cannabis and hemp, and it was first isolated in 1964. Like CBD, it is non-intoxicating, so it does not produce the high associated with THC.

Research on CBG is at a much earlier stage than research on CBD, and most of it has been carried out in cells or in animals rather than in people. That is worth keeping in mind whenever you read a confident statement about what CBG does.

CBGA: the mother cannabinoid

CBG is unusual because of where it sits in the plant’s chemistry. Hemp does not build CBD, THC and CBC separately. It builds one acid first, cannabigerolic acid (CBGA), and enzymes then convert that acid into THCA, CBDA and CBCA.

This is why CBGA is often called the mother cannabinoid, or the stem cell cannabinoid. Everything else in the plant descends from it.

The consequence is straightforward. By the time a hemp plant is mature and ready to harvest, most of its CBGA has already been converted into other acids, and very little is left. Mature hemp typically contains under 1% CBG, sometimes a fraction of that, while the same plant may contain 10% to 20% CBD.

How CBGA becomes CBG

The CBGA that survives to harvest is still in its acidic form. It becomes CBG through decarboxylation, a reaction in which heat removes a carboxyl group from the molecule and releases it as carbon dioxide. The same reaction turns CBDA into CBD and THCA into THC.

Decarboxylation happens slowly with time and light, and quickly with heat. It is the reason a raw hemp flower and a heated hemp extract show very different cannabinoid profiles on paper. Endoca’s RAW hemp extracts are deliberately left unheated, so the acidic forms, including CBDA, stay intact.

Why CBG costs more

Because mature hemp holds so little CBG, producers have two options. They can process a very large volume of ordinary hemp to recover a small amount of CBG, or they can grow CBG-rich varieties bred to hold on to their CBGA and harvest them early, before conversion is complete. Both routes are expensive. Early harvesting sacrifices yield, and high-volume processing costs more per gram recovered. That is the honest reason a CBG oil usually carries a higher price per milligram than a comparable CBD oil, and it has nothing to do with CBG being a stronger or better cannabinoid.

What is CBD?

CBD stands for cannabidiol, and it is the second most prevalent active compound in the cannabis plant after THC. In hemp, it is usually the most abundant cannabinoid by a wide margin. Hemp is a variety of cannabis grown for fibre, seed and low resin content, and unlike THC, CBD does not cause a high. Our guide to CBD vs THC covers that difference in more detail.

The World Health Organization’s 2018 critical review reported no evidence at that time of public health problems associated with the use of pure CBD, and concluded that it is not associated with abuse potential. CBD has also been studied enough to reach prescription medicine status in one narrow context: a purified CBD medicine, Epidyolex, is licensed in the UK through the MHRA for certain rare seizure disorders. That licence applies to that medicine only. It says nothing about CBD food supplements, and Endoca’s products are not medicines.

CBD interacts with the endocannabinoid system, though the full picture of how it does so is still not completely understood. Most people encounter it as CBD oil, capsules or topicals.

CBD and CBDA

CBD follows the same acid-to-neutral pattern as CBG. In the living plant the cannabinoid is CBDA, and it becomes CBD when heat is applied, so raw and heated products are not interchangeable and a certificate of analysis lists them separately.

CBG vs CBD: the key differences at a glance

This table summarises the practical differences between the two cannabinoids.

Beyond that, the two molecules simply differ in shape. Cannabidiol and cannabigerol are built from the same three elements, hydrogen, carbon and oxygen, arranged differently. That different arrangement is what causes them to interact with the body’s cannabinoid receptors in different ways.

What the UK rules mean in practice

Ingestible CBD and CBG products are regulated as novel foods in the UK. Anything intended to be swallowed must appear on the Food Standards Agency public list to be sold legally in England and Wales, and UK rules also cap controlled substances, including THC, at a very low level per container. Topicals sit outside that regime: a cream or balm is a cosmetic under UK rules, not a food, so the novel food list does not apply to it.

How CBG and CBD work in the body

Both cannabinoids interact with the endocannabinoid system, a signalling network involved in regulating a range of physiological processes. Its two best-described receptors are CB1, concentrated in the brain and central nervous system, and CB2, found more in immune tissue and the periphery.

Researchers have found that CBG has an affinity for both CB1 and CB2, meaning it binds to them fairly directly. Laboratory work has also examined its interaction with receptors involved in heat sensitivity and sensory signalling, but that research is preclinical and does not establish what CBG does in a person.

CBD behaves differently. It has very little direct affinity for CB1 or CB2, and research suggests it acts more indirectly, influencing how the system behaves rather than switching receptors on. That indirect action is part of why CBD does not produce intoxication even at high intakes.

The entourage effect

Cannabinoids do not appear alone in the plant, and there is a long-standing hypothesis that they behave differently in company. A 2011 review in the British Journal of Pharmacology set out the case for phytocannabinoid and terpene synergy, and it remains a hypothesis rather than settled science. Our guide to the entourage effect looks at the evidence on both sides.

CBG vs CBD: what each is used for

Neither cannabinoid is authorised to treat any condition, neither is a medicine, and the research base for CBG in particular is thin. What follows is what people commonly report doing, and what researchers have actually examined.

• Daily routines. CBD is the default here simply because it is affordable, widely available and better studied. Most people start with a full spectrum CBD oil and adjust the amount from there.
• Appetite research. This is the clearest documented divergence between the two in the literature. Rat studies have reported that CBG increased food intake in pre-satiated animals, while other rodent work has reported that CBD reduced total food intake. These are animal findings, and they have not been established in people.
• Topical and skincare formulas. CBG appears in hemp skincare and topical blends, usually alongside CBD rather than instead of it.
• Daytime products. CBG products are often marketed for daytime use. That positioning comes from user reports rather than clinical evidence, and individual responses vary.

If you take prescription medication, are pregnant or breastfeeding, speak to your GP or pharmacist before adding either cannabinoid. Both can interact with the liver enzymes that process many common medicines.

Can you take CBD and CBG together?

Yes. Taking them together is the practical way to test the entourage effect, where cannabinoids sit alongside each other rather than in isolation. It is also worth knowing that if you already take a full spectrum hemp extract, you are almost certainly taking some CBG. Full spectrum products retain the plant’s minor cannabinoids, so trace CBG, CBC and CBN come along with the CBD, and a certificate of analysis will show you exactly how much.

There are three common ways to combine them:

1. Use a full spectrum product. The simplest route. You get CBD as the dominant cannabinoid with naturally occurring CBG and other minor cannabinoids alongside it, in the ratio the plant produced.
2. Add a separate CBG product to an existing CBD routine. This gives you control over the ratio, and lets you judge whether the CBG makes any difference to you.
3. Buy a pre-blended CBG and CBD formula. Convenient, but check the label for the actual milligram content of each, not just the stated ratio.

No serious interaction between CBD and CBG has been established, and both are non-intoxicating, so combining them will not make you high. As with any food supplement, start low, keep the rest of your routine unchanged so you can tell what is doing what, and check with your GP or pharmacist first if you take prescription medication.

How to choose between a CBD and a CBG product

For most people the decision is not really CBG vs CBD. It is whether CBG is worth adding to a routine that CBD is already anchoring.

• Start with CBD if you are new to this. It is cheaper per milligram, better researched, and gives you a baseline against which to judge anything you add later.
• Read the certificate of analysis, not the front label. A product marketed as a CBG oil should show meaningful CBG on its lab report. Some show only a few milligrams. Every Endoca batch is third-party tested and the results are published on our lab testing page.
• Compare cost per milligram, not per bottle. CBG will always cost more, but the gap between honest producers and opportunistic ones is large.
• Check the FSA public list for anything ingestible. It is the quickest way to tell whether a UK seller has done the regulatory work.
• Decide between raw and heated. Raw products retain the acidic forms, such as CBDA and CBGA, and heated products convert them. Neither is better, but the label should say which you are buying.
• Check who grew and extracted it. Endoca grows its own hemp and runs its own supercritical CO2 extraction, which is why the profile on the label matches what is in the bottle.

Frequently asked questions about CBG and CBD

What does CBG stand for?

CBG stands for cannabigerol. It is one of more than 120 cannabinoids identified in cannabis and hemp, and was first isolated in 1964. Its acidic precursor, cannabigerolic acid or CBGA, is the compound the plant uses to build every other cannabinoid, which is why CBGA is nicknamed the mother cannabinoid.

Is CBG stronger than CBD?

Not in any meaningful sense. CBG binds more directly to the CB1 and CB2 receptors than CBD does, but binding affinity is not the same as strength or effect. CBG is also far less studied. The higher price reflects how little of it hemp produces, not greater potency.

Does CBG make you high?

No. Like CBD, CBG is non-intoxicating and does not produce the euphoric effects associated with THC. Hemp products sold legally in the UK must keep controlled substances, including THC, to a very low level per container, so what is present is a trace.

Why is CBG more expensive than CBD?

Because mature hemp contains very little of it. The plant converts most of its CBGA into other cannabinoid acids as it grows, so producers must either process large volumes of biomass or harvest CBG-rich plants early, sacrificing yield. Both approaches raise the cost per milligram considerably.

Can you take CBD and CBG together every day?

Many people do, and no established interaction between the two rules it out. A full spectrum hemp extract already contains both. Keep your total intake consistent so you can judge it, and speak to your GP or pharmacist first if you take prescription medication.

Does a full spectrum CBD oil already contain CBG?

Usually yes, in small amounts. Full spectrum extracts retain the plant’s minor cannabinoids, including CBG, CBC and CBN, alongside terpenes. The exact quantity varies by batch and by harvest, so check the certificate of analysis for that specific batch rather than assuming a fixed figure.

Are CBG products legal in the UK?

An ingestible CBG product is treated as a novel food in the UK and must be on the Food Standards Agency public list to be sold legally in England and Wales. It must also keep controlled substances to a very low level per container. Topical CBG products are regulated as cosmetics instead.

If you are starting from scratch, begin with a full spectrum CBD oil, give it a few consistent weeks, and only then decide whether adding CBG is worth the extra cost. The batch certificate on our lab testing page will show you how much CBG is already in the bottle.