Cannabis Terpenes Guide
Understanding terpenes is key to choosing the right medical cannabis strain for your needs. This guide covers the major terpenes found in UK-available strains — their aromas, effects and medical relevance.
What is the Entourage Effect?
The entourage effect describes how cannabinoids (THC, CBD, CBG, etc.) and terpenes work together synergistically — producing combined therapeutic effects that are greater than any single compound alone. This is why full-spectrum medical cannabis products, which retain the natural terpene profile, may offer different benefits compared to isolated cannabinoids.
For UK medical patients, understanding terpenes allows more informed conversations with your prescribing clinician about which strain formulation may be best suited to your condition and lifestyle.
Myrcene — UK Medical Cannabis Guide
The most common terpene in medical cannabis, myrcene produces an earthy, musky aroma similar to cloves. It is associated with sedating, relaxing effects and is found in abundance in indica-dominant strains. Research suggests myrcene may enhance the permeability of cell membranes, potentially amplifying the effects of cannabinoids.
May help with pain, insomnia and muscle tension. Often found in strains prescribed for chronic pain and sleep disorders.
Limonene — UK Medical Cannabis Guide
Limonene gives cannabis its bright citrus scent. Common in sativa-dominant strains, it is associated with elevated mood and stress relief. As the name suggests, limonene is also found in citrus fruit rinds, and is used widely in cleaning products and cosmetics for its fresh scent.
May help with anxiety, depression and stress. Often prescribed to patients with mood disorders.
Caryophyllene — UK Medical Cannabis Guide
Beta-caryophyllene is unique among terpenes in that it directly binds to CB2 receptors in the endocannabinoid system — giving it genuine cannabinoid-like properties. This makes it especially relevant for medical cannabis patients seeking anti-inflammatory effects without psychoactivity. It is also present in black pepper, cloves and cinnamon.
Strong anti-inflammatory profile; may benefit patients with arthritis, inflammatory bowel conditions and chronic pain.
Pinene — UK Medical Cannabis Guide
Alpha-pinene is the most common terpene in nature and gives pine trees their distinctive scent. In cannabis, pinene may counteract some of the short-term memory impairment associated with THC — a useful property for medical patients who need to remain functional. It also acts as a bronchodilator, opening up airways.
May aid focus and memory; beneficial for asthma patients (bronchodilator effect) and those who need to stay alert while medicating.
Linalool — UK Medical Cannabis Guide
Linalool is the primary terpene of lavender and is well-known for its calming, anxiolytic properties. In cannabis, it modulates the neurotransmitter glutamate and GABA pathways, contributing to its sedative effects. It is often found in strains prescribed for anxiety, PTSD and insomnia.
Particularly well-suited for anxiety, PTSD, epilepsy and insomnia. May have analgesic and anti-inflammatory properties.
Terpinolene — UK Medical Cannabis Guide
Terpinolene has a complex, multi-layered aroma — fresh and floral with hints of pine and citrus. It is less common than the other major terpenes but appears as the dominant terpene in some sativa strains. Despite its somewhat sedative effect in isolation, in cannabis it tends to combine with other terpenes for an uplifting, creative experience.
May help with anxiety and fatigue; shows antioxidant and antibacterial properties in preclinical studies.
Humulene — UK Medical Cannabis Guide
Humulene is closely related to caryophyllene and shares its anti-inflammatory properties. It is a primary terpene in hops (giving beer its distinctive bitterness) and is notable for its appetite-suppressing effects — making it useful for patients who do not want the munchies typically associated with cannabis.
Anti-inflammatory, anti-bacterial properties. May benefit patients with inflammatory conditions who want to avoid increased appetite.
Ocimene — UK Medical Cannabis Guide
Ocimene contributes to the sweet, herbal fragrance of certain cannabis strains. It is found abundantly in mint, parsley and orchids, and is used commercially as a fragrance ingredient. In cannabis, ocimene often works in concert with other terpenes to produce uplifting effects.
Antiviral, antifungal and decongestant properties observed in preclinical research.
Frequently Asked Questions about Cannabis Terpenes
What are cannabis terpenes?
Do terpenes affect how medical cannabis works?
Which terpene is best for pain relief?
Which terpene is best for anxiety?
Can I choose a UK medical cannabis strain by terpene profile?
Are terpene percentages shown on UK medical cannabis labels?
Disclaimer: The information on this page is for educational purposes and does not constitute medical advice. Always consult your prescribing clinician or specialist before making decisions about your medical cannabis treatment. About LeafMe · Patient Guides