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Tetrahydrocannabinol (THC)

Tetrahydrocannabinol (THC) is a natural compound found in the cannabis plant. It is one of over 140 cannabinoids identified from cannabis flowers.

THC interacts with cannabinoid receptors in the brain and nervous system, particularly with CB1 receptors, which are associated with mood, memory, and coordination. Unlike cannabidiol (CBD), THC is commonly known for its euphoric effects in relation to recreational use, but there is growing evidence for its medicinal use for certain symptoms, alongside CBD.

Tetrahydrocannabinol (THC) | Curaleaf Clinic

At Curaleaf Clinic, we provide expert guidance on the medical use of THC and will work with you to find the most appropriate plan for you and your condition.

Frequently Asked Questions
about Tetrahydrocannabinol (THC)

  • What is THC?

    THC is a compound found in cannabis that interacts with the brain’s CB1 receptors, affecting mood, memory, and coordination. It is known for its psychoactive effects.

  • What is THC prescribed for?

    Medical cannabis, including THC, may be considered for certain conditions and symptoms, when other treatments haven’t worked. These include:

    THC is also part of licensed medicines like nabiximols (Sativex®), which contains both THC and CBD.

  • Do I need a prescription for THC?

    Yes, THC can only be prescribed as part of a cannabis-based medicinal product (CBMPs). It is tightly regulated, and its possession, supply, or production is illegal outside of specific medical contexts.

  • Is THC legal in the UK?

    THC is a controlled substance in the UK, and is only legal when prescribed for medical use under specific conditions. Medical cannabis products containing THC must meet regulatory standards.

  • Does THC cause a ‘high’?

    THC is known for its psychoactive effects, which can produce a ‘high’ or euphoria. However, at Curaleaf Clinic, this euphoria is considered a negative side effect. Our aim is to reduce chronic symptoms so you can feel better equipped to manage your life.  We start patients on a low dose, which can be slowly increased over time to reduce the chance of side effects.

  • How does THC affect the body?

    THC interacts with the endocannabinoid system, particularly CB1 receptors in the brain and spinal cord. Side effects are commonly mild to moderate, but can vary based on the dose, how the product is used, and how the person reacts to it. THC will not be appropriate for everyone.