High-THC Medical Cannabis Strains UK — Compare Prices

High-THC cannabis strains (typically 20% THC or above) are among the most potent products available on prescription in the UK. They are commonly prescribed for severe chronic pain, treatment-resistant PTSD, cancer-related symptoms and conditions where lower-THC products have proven inadequate. UK cannabis doctors recommend starting low and titrating slowly with high-THC strains.

30Strains Listed

8Products Available

UKPrescription Only

High-THC Cannabis Strains

Showing 30 strains associated with high-thc effects. All require a valid UK medical cannabis prescription.

30% Hybrid CLASSIC

GG4 Gorilla Glue

THC 25–30% · CBD 0–1%

Relaxing Euphoric Happy

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29% Hybrid CLASSIC

Runtz

THC 19–29% · CBD 0.1–0.2%

euphoric relaxed uplifting

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28% Hybrid CLASSIC

Girl Scout Cookies

THC 17–28% · CBD 0.1–0.5%

Euphoric Happy Relaxed

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27% Hybrid CLASSIC

Wedding Cake

THC 22–27% · CBD 0.1–0.2%

relaxed euphoric happy

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26% Hybrid CLASSIC

OG Kush

THC 19–26% · CBD 0.1–0.3%

Relaxed Happy Euphoric

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26% Sativa CLASSIC

Sour Diesel

THC 20–26% · CBD 0.1–0.3%

Energetic Happy Uplifting

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26% Hybrid CLASSIC

Chemdawg

THC 19–26% · CBD 0.1–0.3%

euphoric creative cerebral

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26% Sativa CLASSIC

Durban Poison

THC 18–26% · CBD 0.1–0.2%

energetic uplifting creative

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25% Hybrid CLASSIC

Gelato

THC 20–25% · CBD 0.1–0.4%

Euphoric Creative Relaxed

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25% Hybrid CLASSIC

White Widow

THC 18–25% · CBD 0.1–0.3%

Energetic Creative Euphoric

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25% Sativa CLASSIC

Amnesia Haze

THC 20–25% · CBD 0.1–0.2%

Euphoric Creative Energetic

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25% Sativa CLASSIC

Super Lemon Haze

THC 19–25% · CBD 0.1–0.2%

energetic uplifting creative

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25% Indica CLASSIC

LA Confidential

THC 19–25% · CBD 0.1–0.2%

THC 19–25% · CBD 0–1%

Energetic Uplifting Euphoric

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24% Sativa CLASSIC

Jack Herer

THC 17–24% · CBD 0.1–0.3%

uplifting creative focused

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24% Sativa CLASSIC

Blue Dream

THC 18–24% · CBD 1–2%

Happy Relaxing Euphoric

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24% Indica CLASSIC

Master Kush

THC 18–24% · CBD 0–1%

Relaxing Sleep Euphoric

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23% Indica CLASSIC

Granddaddy Purple

THC 17–23% · CBD 0.1–0.4%

THC 18–23% · CBD 0.1–0.2%

relaxed happy euphoric

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23% Sativa CLASSIC

Super Silver Haze

THC 18–23% · CBD 0.1–0.2%

energetic uplifting creative

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22% Sativa CLASSIC

Blue Dream

THC 17–22% · CBD 0.1–0.5%

Euphoric Creative Uplifting

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22% Sativa CLASSIC

Purple Haze

THC 17–22% · CBD 0.1–0.2%

euphoric uplifting creative

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22% Indica CLASSIC

Bubba Kush

THC 17–22% · CBD 0.1–0.2%

relaxed sleepy euphoric

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22% Hybrid CLASSIC

AK-47

THC 17–22% · CBD 1–1.5%

relaxed uplifting creative

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22% Indica CLASSIC

Hindu Kush

THC 18–22% · CBD 0.1–0.3%

THC 17–22% · CBD 0.1–0.3%

relaxed euphoric calm

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22% Indica CLASSIC

Northern Lights 5

THC 18–22% · CBD 0.1–0.3%

relaxed sleepy pain-relief

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21% Indica CLASSIC

Northern Lights

THC 18–21% · CBD 0.1–0.2%

THC 18–21% · CBD 0–1%

Relaxing Sleep Sedating

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21% Indica CLASSIC

Hash Plant

THC 17–21% · CBD 0.1–0.3%

relaxed sleepy calm

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Products from High-THC Strains

Prescribable products made from high-thc strains — compare prices across UK clinics.

Oil

Spectrum Gold Oil

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Cantourage Extract 25

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LGP Night Blend

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IQOS Medical T18 Vape Cartridge

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Lyphe OG Kush Oil 25ml

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Tilray THC Capsules 30x 5mg

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Bedrocan THC Capsules 60x 10mg

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Aurora Sour Diesel Vape 0.5ml

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All strains listed on LeafMe are available in the UK on a private medical cannabis prescription only. To access these strains, you will need to book a consultation with a UK specialist cannabis clinic. LeafMe compares prices across all major licensed UK cannabis clinics so you can find the most affordable prescription for your needs.

Prices, availability and strain listings are updated regularly. Always follow your prescribing doctor’s advice on dosage and strain selection. Individual responses to cannabis strains vary significantly.

Frequently Asked Questions

Can I get high-thc medical cannabis strains on prescription in the UK? +

Yes. Medical cannabis has been legal in the UK since November 2018. Specialist doctors at licensed UK cannabis clinics can prescribe cannabis flower, oil and other products for a range of qualifying conditions. You will need a consultation and a valid medical need.

Which strain type is best for high-thc? +

Strain effects depend on a combination of cannabinoid content (THC/CBD ratio), terpene profile and individual patient response. Your UK cannabis doctor will recommend the most suitable strain based on your medical history. The strains listed here are those most commonly associated with high-thc effects.

How do I compare medical cannabis prices in the UK? +

LeafMe allows you to compare prices for medical cannabis products across all major UK licensed clinics side by side. You can filter by strain, effect, THC/CBD content and product form to find the best value prescription.

Explore More Strain Effects

Relaxing Sleep Pain Relief Anxiety Focus Appetite Energy Nausea

Patient Journey

How to Get a Medical Cannabis Prescription

Entirely online — no GP referral needed. Most patients prescribed within 5–10 days.

Check Your Eligibility

Chronic pain, PTSD, anxiety, insomnia or 10+ other qualifying conditions. Two failed standard treatments required. Free 2-minute eligibility check.

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Book Online Consultation

Choose a licensed UK specialist. Compare fees from £0 to £199. Video appointment typically within 1–5 working days — accept patients from the UK.

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Receive & Compare Prices

Prescription sent digitally to a licensed pharmacy. Delivery UK-wide. Use LeafMe to compare prices across all dispensaries before you order — save up to 40%.

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Medical cannabis is a Schedule 2 controlled drug available on private prescription from GMC-registered specialists.

Full Beginner Guide →