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CBDV vs CBD: Two Properly Designed Trials, Both Negative

CBDV is structurally CBD with a shorter side chain, produced by a separate genetic branch of the plant. It is unusual among minor cannabinoids in having been tested in humans in properly designed trials. That is the good news. The trials, one in epilepsy and one in neuropathic pain, both failed to show benefit.

About this page. This is editorial science writing, not product information. It describes what published research has reported and what European regulation says. Under Regulation (EC) No 1924/2006 no health claim for any cannabinoid is authorised in the EU, so nothing here states or implies that any product will produce a health effect for you. Descriptions of trial results are reports of what researchers measured in their study populations, at the doses they used. Where a compound is discussed alongside an Endoca product, see the applicable product page for the information EU law permits us to give.

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At a glance

Property
CBDV
CBD
Side chain
Propyl, three carbons
Pentyl, five carbons
Biosynthetic route
Divarinolic acid to CBGVA to CBDVA
Olivetolic acid to CBGA to CBDA
CB1 receptor
Inactive, Ki above 10 μM
Very weak, no activation
CB2 receptor
Ki 140 nM, cAMP EC50 5.0 nM
Ki 240 nM, low efficacy
Most potent measured target
TRPA1, EC50 0.42 μM
ENT1 transporter, TRPA1 at 0.09 μM
Intoxicating
No
No
Phase 2 epilepsy trial
Failed, p = 0.648
Succeeded, produced Epidyolex
Neuropathic pain trial
Failed
Also largely negative in pain
EU food status
Unauthorised novel food
Unauthorised novel food

The propyl branch

Most familiar cannabinoids carry a five-carbon side chain inherited from olivetolic acid. A second, smaller family carries a three-carbon chain built from divarinolic acid instead. These are the varins: CBDV, THCV and CBGV.

The varin pathway segregates genetically, so a plant either carries it or largely does not. That is why CBDV is scarce in ordinary hemp and why varin-rich cultivars are bred deliberately.

CBDV and CBD are therefore siblings rather than parent and child. Same overall architecture, two fewer carbons.

Pharmacology

Inner - CBDV vs CBD

CBDV has no meaningful CB1 activity, which is why it is not intoxicating. At CB2 it has reasonable affinity at 140 nanomolar and a notably low cAMP EC50 of 5.0 nanomolar, though with partial efficacy. Its most potent TRP channel action is TRPA1 at 0.42 micromolar.

It also shows signalling bias at CB2, though two research groups reported the bias in opposite directions using different methods. That is a reminder to treat single-source pharmacology carefully.

There is no published human pharmacokinetic study of CBDV.

Where the evidence is unusual

CBDV
GW Pharmaceuticals ran a Phase 2 randomised controlled trial in 162 adults with inadequately controlled focal seizures, using 800 mg CBDV twice daily against placebo.
The treatment ratio was 0.95, with a confidence interval of 0.78 to 1.17 and a p value of 0.648.
Mean pain intensity was 0.62 points higher on CBDV than on placebo, with no effect on rescue medication use, pain characteristics or quality of life.
Single-dose studies show CBDV modulating the balance of glutamate and GABA in the brain and altering striatal connectivity in adults with and without autism.
They are not efficacy trials and do not show CBDV treats autism, although they are sometimes cited as if they did.
CBD
It succeeded in epilepsy, which produced Epidyolex.
It largely failed in pain, where 15 of 16 randomised trials with verified pharmaceutical material showed no benefit.

Most writing about minor cannabinoids has to say that no human trials exist. CBDV is the exception, and the exception is instructive.

A failed trial is not the same as a useless compound, and precision matters.

The epilepsy trial used a specific dose in a specific population with a specific seizure type. It tells you that CBDV at 1,600 mg daily does not reduce focal seizures more than placebo. It does not tell you CBDV does nothing at all.

But it does something more useful than most minor cannabinoid literature: it puts a real boundary on the claim space. A properly powered trial at a substantial dose returning a p value of 0.648 is more informative than a hundred favourable cell culture studies.

Compounds are not good or bad in general; they work or fail at specific things.

How Endoca tests for this

We do not sell a CBDV product, and the reason is on this page. When a cannabinoid has been given two properly designed human trials and failed both, the responsible thing is to say so rather than to build a product line on the mechanistic literature that preceded them.

Frequently asked questions

No. It has no meaningful CB1 activity.

Usually only in trace amounts, unless the cultivar carries the varin pathway.

Different compounds, populations and seizure types. They are not interchangeable.

Not for efficacy in anything tested so far.

References

01

Brodie MJ et al. Cannabis Cannabinoid Res 2021;6:528-536.

02

Eibach L et al. Clin Pharmacol Ther 2021;109:1055-1062.

03

Pretzsch CM et al. Transl Psychiatry 2019;9:313.

04

Zagzoog A et al. Sci Rep 2020;10:20405.

05

De Petrocellis L et al. Br J Pharmacol 2011;163:1479-1494.

06

Moore RA et al. J Pain 2024;25:833-842.

Last reviewed 1 September 2026.

Educational information about published research and European regulation. Not a health claim.