Delta-8-THC: Everything you need to know
- Meet delta-8-THC: an isomer of THC produced from CBD
- The effects of delta-8-THC: "THC's milder brother"
- Therapeutic potential: against nausea, pain and other ailments
- The uncertain future of delta-8 in Europe
- FAQ
Get to know delta-8-THC: an isomer of THC produced from CBD
Delta-8-THC is an isomer of THC (delta-9-THC) – it occurs in cannabis only in trace amounts, so "extracting it from the plant" would be extremely inefficient. Therefore, most commercial delta-8 is produced (semi)synthetically 🔬.
Simply put, CBD is "rearranged" (isomerised) into delta-8-THC through a chemical reaction. The resulting substance is then purified and used in final products.
Before regulations tightened in Europe, delta-8 was commonly offered in e-shops as a "legal high".
A wide range of products containing delta-8-THC gradually appeared on the market. You could find it in gummies and other edibles, in vapes and cartridges, in tinctures or capsules. Cannabis flowers infused with delta-8 distillate, snuff powders, various sweets and drinks were also sold.
Delta-8 vs. delta-9: what is the difference? 🧪
Chemically, these two cannabinoids differ "only" in the position of the double bond in the molecule, and it is this detail that can determine how the substance will behave in the body. The position of the double bond is shifted by "one carbon": in delta-8-THC, it lies between the 8th and 9th carbons, while in delta-9-THC, it lies between the 9th and 10th carbons 🧬.

Delta-8 is generally reported to have a lower affinity for the CB1 receptor (mainly in the brain) in the endocannabinoid system, which is associated with lower psychotropic potential.
👉 However, the EFSA (European Food Safety Authority) has recently suggested that, in terms of biological effects, delta-8 and delta-9 may be roughly comparable in potency (equipotent).
Delta-8-THC is chemically more stable than delta-9-THC, which is one of the reasons why its potential therapeutic uses are being investigated.
Effects of delta-8-THC: "the milder brother of THC"
Because both delta-8 and delta-9 bind to CB1 and CB2 receptors, the effects are very similar.
Typically mentioned 👇:
- euphoria 😄
- relaxation 😌
- altered perception of time ⏳
- impaired short-term memory and concentration 🧠💭
- increased appetite 🍕
Many users report that delta-8 can produce a pleasant "buzz" without the "psycho trip" that delta-9 can sometimes cause.
In one survey of 521 delta-8 users, the most commonly reported effects were significant relaxation and euphoria, along with less anxiety and paranoia than when using delta-9.
👉 This is why delta-8 is sometimes called the "milder brother of THC" and is informally nicknamed "diet weed" or "weed lite" – precisely because of its allegedly lower intensity, which, however, has not yet been confirmed by any major clinical studies.

Side effects
Although delta-8-THC appears to be a milder variant of THC, side effects similar to those of delta-9 may occur.
The most common side effects reported by users are 👇:
- red eyes 👀
- rapid heartbeat 💓
- dry mouth 🥵
- temporarily impaired coordination and reactions 🕺
- impaired concentration and short-term memory 🧠🌫️
- feeling of confusion or "brain fog" 🤯
⚠️ At higher doses or in more sensitive individuals, unpleasant psychological symptoms (anxiety, paranoia or hallucinations) may occur.
Therapeutic potential: against nausea, pain and other difficulties
Delta-8-THC is also of interest to scientists because of its potential therapeutic benefits 👇.
As early as the 1970s, small studies suggested that delta-8 has approximately two-thirds of the psychoactivity of delta-9-THC, but the effects are qualitatively very similar. In other words, it works similarly, only potentially a little more gently.
A 1995 study is also often cited, in which delta-8 was administered to paediatric oncology patients as a remedy for chemotherapy-induced nausea. Eight patients did not experience vomiting during the eight-month follow-up period. The authors concluded that delta-8 can effectively suppress nausea and, thanks to its higher chemical stability, could theoretically be suitable for this purpose.
There is also interest in pain relief – more than half of respondents in a 2022 survey said that delta-8 helped them with pain. Some preclinical studies also suggest analgesic potential.
Other areas being discussed include appetite stimulation and anxiety reduction. However, there is not yet enough evidence, and more extensive research is needed.
👉 Delta-8-THC is not an approved medicine, and its potential therapeutic uses are still being researched.
The uncertain future of delta-8 in Europe
Delta-8-THC has gained popularity mainly as a supposedly milder variant of THC, offering a similar "buzz" with less intensity.
Most commercial products are (semi)synthetically derived from CBD, which raises questions about quality, purity and safety. Although some studies suggest potential therapeutic benefits, there is not yet sufficient evidence.
European institutions and individual states have begun to take delta-8 more seriously – the trend is towards further restrictions rather than free sale.
FAQ
1. Where can I buy delta 8 vape?
Currently, delta 8 vape cannot be purchased legally and without "grey areas" in most European countries❌.
Delta-8 is an isomer of THC, and THC isomers are also subject to international control (1971 Convention).
In addition, individual states have different approaches to (semi)synthetic cannabinoids, and in recent years there has been a trend towards restriction.
2. Why do some people experience side effects from delta-8-THC and others do not?
How strongly (and whether at all) side effects appear depends on several factors – metabolism, individual tolerance, previous experience with cannabinoids, but also the method of administration (e.g. vaping vs. edibles) and, of course, the dose.
Every body can react a little differently.
3. What do experts say about the safety of delta-8-THC?
For now, the main issue is that there is not enough long-term data. It is unclear whether regular use of delta-8 can lead to similar problems as THC over time – such as the development of tolerance, dependence or psychological problems in more sensitive people.
👉 Experts therefore caution that until further studies are available, delta-8 cannot be considered a "safer" alternative to THC.
The FDA (US Food and Drug Administration) has also warned that delta-8 products may expose users to much higher doses than those naturally found in the plant – and the effects of such doses have not yet been sufficiently researched.
Added to this is the question of quality: tests have previously shown that the content of some products did not correspond to what was stated on the label and that they also contained other cannabinoids (including delta-9) or unwanted residues from the manufacturing process.
4. Is delta-8-THC legal in Europe?
In Europe, each country has long had a different approach to this. In some countries, delta-8 was sold as a "legal high" for some time.
In 2023–2024, countries began to gradually tighten their stance – for example, Austria, Belgium, Denmark, Finland, France and Czechia introduced explicit bans on new (semi)synthetic cannabinoids, which include delta-8.
At the same time, in 2025, EFSA warned of the risks of delta-8 in food and set a very strict safety limit for both delta-8 and delta-9. This suggests that the EU is beginning to take it as seriously as classic THC – and further restrictions can be expected in the future.
5. Will delta-8-THC show up on a drug test?
Yes, it can. Common drug tests usually do not distinguish between different types of THC, so delta-8 can also lead to a positive result.
Tests usually detect THC metabolites that are produced when it is broken down in the body – and delta-8 produces metabolites that are very similar to classic delta-9. In addition, some products may also contain traces of delta-9-THC, which further increases the risk of a positive test.
Sources:
- efsa.europa.eu/en/news/delta-8-thc-efsa-sets-safe-intake-level
- link.springer.com/article/10.1186/s42238-021-00115-8
- ascpt.onlinelibrary.wiley.com/doi/10.1002/cpt1973143353
- ecddrepository.org/en/tetrahydrocannabinol-including-six-isomers
- euda.europa.eu/publications/eu-drug-markets/new-psychoactive-substances/distribution-and-supply/semi-synthetic-cannabinoids_en
- fda.gov/consumers/consumer-updates/5-things-know-about-delta-8-tetrahydrocannabinol-delta-8-thc
- mdpi.com/1420-3049/27/20/6924
- news.vcu.edu/article/2021/12/vcu-lab-testing-delta-8-products-finds-misleading-labeling-lack-of-safety-standards
- biologyinsights.com/can-a-drug-test-detect-delta-8-thc/
- dpi.illinois.edu/news/know-your-deltas-the-difference-between-8-9-and-10
Photo: AI
"All information provided on this website, as well as the information provided through this website, is for educational purposes only. None of the information contained herein is intended as a substitute for medical diagnosis and such information is not to be considered medical advice or recommended treatment. This website does not promote, endorse or advocate the legal or illegal use of narcotic drugs or psychotropic substances or the commission of any other illegal activity. Please see our Disclaimer for further information."







