Last updated: October 2026
THCV (tetrahydrocannabivarin) is a minor cannabinoid from the cannabis plant, a close chemical cousin of THC. In the UK it is a controlled Class B drug, so THCV oils, gummies and vapes are illegal to sell unless they meet strict exempt product rules. It’s studied for appetite and blood sugar, but human research is small and early.
Is THCV legal in the UK?
No. THCV is a controlled Class B drug in the UK. Products sold for their THCV content are illegal to sell here unless they meet the “exempt product” rules, and buying them online is a legal risk.
- The Misuse of Drugs Act 1971. “Cannabinol derivatives” are Class B drugs. The Act defines them as tetrahydro derivatives of cannabinol and “3-alkyl homologues” of them. The Home Office lists THC and THC-V among these cannabinol derivatives.
- The Home Office. Its drug licensing factsheet names THC-V (delta-9-tetrahydrocannabinol-C3) alongside THC as a controlled Class B cannabinoid. Possessing, supplying, producing or importing it is unlawful without a Home Office licence, and those licences are not ordinarily issued without evidence of a lawful route to market.
- The exempt product rule. The Misuse of Drugs Regulations 2001 exempt a product only if all three conditions are met: it is not designed to give the controlled drug to a person, the drug can’t be readily recovered from it, and no single component contains more than 1mg of it. The Home Office reads that 1mg as per container, such as a whole bottle of oil, not per dose. It lists a product’s stated purpose, marketing and labelling as evidence for the first condition, which makes it hard to see how a product sold for its THCV could qualify.
- Penalties. For Class B drugs the maximum is 5 years in prison for possession and 14 years for supply, an unlimited fine, or both.
The “0.2% THC” figure often quoted online isn’t the Home Office test for finished products; the 1mg per container rule is. More in is CBD legal in the UK?
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View productCan you buy THCV oil or gummies in the UK?
THCV oils, gummies and vapes are advertised to UK buyers, often from abroad, but that doesn’t make them legal. Importing a controlled drug needs a Home Office licence, and Border Force and the police enforce the rules.
There is no food route either. The Food Standards Agency (FSA) says hemp extracts, other than hemp seeds and plain leaf teas, are likely to be novel foods that need authorisation before sale. Its public list covers only CBD products on sale by February 2020 and linked to an application, and they must not be controlled substances. A THCV product has no place on it.
Unregulated products also carry a safety risk: they may contain THC or synthetic cannabinoids. Treat them like delta-8 THC products.
A legal alternative: broad spectrum CBD
Pure CBD is not a controlled drug, and CBD supplements can be sold if they meet the exempt product rules and are on the FSA public list. Our Broad Spectrum CBD Oil and capsules are 0% THC, and every batch is tested at an ISO 17025 lab, with reports on request from our lab testing page. They are on the FSA public list, linked to validated applications RP438, RP821 and RP47. To compare brands, see the best CBD oil in the UK and how to read a CBD lab report.
The FSA’s 10mg a day figure is precautionary advice rather than a legal limit, set while longer-term safety research continues. At Evopure we think it is a very cautious figure, and many adults use more. If you go above it, increase slowly, and check with your GP or pharmacist first if you take any medication.
Our products are for adults (18+) only. We don’t recommend our products during pregnancy or breastfeeding.
What is THCV (tetrahydrocannabivarin)?
THCV is one of more than 100 cannabinoids in cannabis. Its structure is very similar to THC’s, but with a three-carbon side chain instead of five, which is why the Home Office calls it delta-9-tetrahydrocannabinol-C3. At low doses it acts as a “neutral antagonist” at the CB1 receptor in the endocannabinoid system: it tends to block that receptor rather than switch it on, unlike THC. That’s why researchers have looked at appetite.
THCV belongs to the “varin” family alongside CBDV (cannabidivarin). See also cannabinoids explained, CBGA, the “mother” cannabinoid, CBC oil and CBG vs CBD.
THCV vs THC vs CBD
| THCV | THC | CBD | |
|---|---|---|---|
| Intoxicating? | Not at 10mg in studies; some drug effect at 100mg+ | Yes | No |
| CB1 receptor | Blocks it at low doses | Activates it | Doesn’t activate it |
| Appetite | Studied for reducing it | Increases it | Little effect |
| UK status | Class B controlled drug | Class B controlled drug | Not controlled when pure |
More in CBD vs THC and CBD vs CBN (CBN is also controlled in the UK). For CBD oil types, see full spectrum vs broad spectrum vs isolate.
What the research on THCV shows
| Study | Who | What it found |
|---|---|---|
| Type 2 diabetes, 2016 (UK) | 62 adults split across five groups, 13 weeks | 5mg twice a day lowered fasting glucose vs placebo; the main measure (cholesterol) didn’t change |
| Food reward scans, 2014 (UK) | 20 healthy adults, single 10mg dose | Changed brain responses to food, not how pleasant people rated it |
| THCV with THC, 2016 (UK) | 10 men, 10mg a day for five days | Felt like placebo; dampened some THC effects, increased others |
| Dose-ranging, 2023 (US) | 21 healthy adults, 12.5mg to 200mg of delta-8 THCV | Mostly mild side effects; THC-like “drug effect” at higher doses |
These are small, early studies, some run by cannabis company researchers. THCV isn’t a proven weight-loss or diabetes treatment, and “diet weed” marketing goes well beyond the evidence. For CBD, see what the diabetes trial found for CBD (CBD on its own didn’t improve blood sugar control) and CBD for weight loss.
Does THCV show up on a drug test?
It can, even without any THC. In the 2023 dose-ranging study, 78 of 79 urine screens taken eight hours after THCV tested positive for THC. A 2026 follow-up found THCV’s breakdown products trigger the standard cannabis screening test: 70 of 80 samples tested positive with no THC breakdown product present. For work, driving and sport, see does CBD show up on a drug test?
Sources 10
- Home Office. Drug licensing factsheet: cannabis, CBD and other cannabinoids.
- Misuse of Drugs Act 1971, Schedule 2.
- Misuse of Drugs Regulations 2001, regulation 2.
- Gov.uk. Drugs penalties.
- Food Standards Agency. Cannabidiol (CBD) guidance.
- Jadoon KA et al. Efficacy and safety of cannabidiol and tetrahydrocannabivarin on glycemic and lipid parameters in patients with type 2 diabetes. Diabetes Care, 2016.
- Tudge L et al. Neural effects of cannabinoid CB1 neutral antagonist tetrahydrocannabivarin on food reward and aversion in healthy volunteers. Int J Neuropsychopharmacol, 2014.
- Englund A et al. The effect of five day dosing with THCV on THC-induced effects in healthy male volunteers. J Psychopharmacol, 2016.
- Peters EN et al. A two-phase, dose-ranging, placebo-controlled study of oral delta-8 tetrahydrocannabivarin in healthy participants. Cannabis Cannabinoid Res, 2023.
- Sempio C et al. Metabolite patterns in human urine after oral administration of highly purified delta-8 THCV. Forensic Toxicol, 2026.
This guide is general information, not legal advice.
