Author: Lucie 7 min read

CBD vs. THC vs. HHC

Today's article brings you a comparison of 3 popular substances found in cannabis - CBD, THC, and HHC. What is the difference between them? What are their effects? Are they legal in our country? Let's take a look together.

Legal status of cannabis in the European Union (as of 25 September 2026)

“Články 34 a 36 SFEU musí být vykládány v tom smyslu, že brání vnitrostátní právní úpravě, která zakazuje uvádět na trh CBD, který je legálně vyprodukován v jiném členském státě, v případě, že je extrahován z celé rostliny cannabis sativa, a nikoli pouze z jejích vláken a semen, ledaže je tato právní úprava s to zaručit naplnění cíle ochrany veřejného zdraví a nepřekračuje meze toho, co je k dosažení tohoto cíle nezbytné.”

[Translation: “Articles 34 and 36 TFEU must be interpreted as precluding national legislation which prohibits the marketing of CBD lawfully produced in another Member State when it is extracted from the Cannabis sativa plant in its entirety and not solely from its fibre and seeds, unless that legislation is appropriate for securing the attainment of the objective of protecting public health and does not go beyond what is necessary for that purpose.”]

Court of Justice of the European Union, 19 November 2020, Case C-663/18 (Kanavape)

This overview is based on legislation and case law in the legal database Europaius. It is not legal advice.

Legal status of HHC: in the Czech Republic, HHC (hexahydrocannabinol) is a psychotropic substance listed in Annex 4 of Government Regulation No. 463/2013 Coll. (nařízení vlády č. 463/2013 Sb.). Its production, sale, offering and possession without a permit are illegal. Related substances such as HHCP, HHC-C8 and HHCB are listed psychoactive substances under nařízení vlády č. 11/2025 Sb. and may only be handled for research. HHC is also a controlled substance in many other EU countries.

Recently, HHC, or hexahydrocannabinol, has been increasingly discussed. Although HHC has been known for more than 80 years, it has only gained popularity in recent years. What is the difference between this substance and cannabinoids CBD and THC? And do they have anything in common?

CBD vs. THC vs. HHC

  • HHC vs. CBD
HHC, or hexahydrocannabinol, can be found in hemp plants, just like other cannabinoids such as THC and CBD, etc. However, HHC is present in very small quantities, so it is synthetically produced using CBD extracted from hemp plants.
Cannabidiol CBD is a legal substance that has no psychoactive effects. CBD oils and products containing this cannabinoid have been experiencing a huge boom in recent years. There is now an abundance of products with CBD available on the market, including the aforementioned CBD oils, such as CBD flowers, CBD capsules, gummies, cosmetics, foods, etc. The trend of using this substance is increasing, and manufacturers are responding flexibly.


cbd_produkty
HHC is different. In the Czech Republic it is a psychotropic substance, and it is also controlled in many other EU countries. HHC has not been approved as a medicine, and research has not yet provided conclusive results on its effects or safety.

  • HHC vs. THC
In the Czech Republic, the law was amended in 2022, increasing the permitted THC content in hemp to 1%. Using or growing hemp with a higher THC content is only possible with a medical prescription or the appropriate permit.
THC in small to medium doses induces a euphoric feeling. HHC is also psychoactive and acts in a similar way to THC, which is one of the reasons why it is regulated.
Unlike hemp with up to 1% THC, HHC is not legal in the Czech Republic: it is listed as a psychotropic substance in Annex 4 of Government Regulation No. 463/2013 Coll. As mentioned, cannabinoid effects work differently on each organism, so it is always necessary to monitor and perceive the body's reactions.
The effects and safety of hexahydrocannabinol have not been sufficiently studied. The risks include its psychoactive effects, the unknown composition of uncontrolled products, a possible positive test for THC and a reduced ability to drive.

The reactions to this substance are not only positive. Among the negative side effects mentioned are dry mouth, insomnia, anxiety states, paranoia, nausea, dizziness, etc.hhc_molekula


Products sold as HHC oils, vapes, gummies or flowers sprayed with HHC extract are not subject to any quality control, so their actual composition is unknown.

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Author: Lucie