| £0.096 | 405 mg | £7.00 | 180 caps · 180 srv | Capsules | — | Amalth L-Theanine 405mg with Black Pepper | High-Strength Amino Acid Capsules | 180 Vegan Capsules | Non-GMO, Gluten & Dairy Free | 6 Months Supply Food Supplement |
| £0.11 | 200 mg | £27.95 | 250 g · 1,250 srv | Powder | 4.3 (131) | L-Theanine Powder 250 g | 200 mg Daily Dose | 1,250 servings | GMO free | No fillers or binders | Suitable for vegans |
| £0.14 | 400 mg | £6.89 | 120 caps · 120 srv | Capsules | 4.4 (65) | L-Theanine 400mg with BioPerine® | 120 Vegan Capsules | High Absorption & Bioavailablity L Theanine | Enhanced Sleep at Night | Boost Focus & Relieve Stress | 4 Months Supply | UK Made | by NutriVolv |
| £0.16 | 500 mg | £7.39 | 90 caps · 90 srv | Capsules | 4.2 (34) | L-Theanine 500mg - 90 Capsules - Supports Sleep and Relaxation |
| £0.17 | 1 g | £9.99 | 60 caps · 60 srv | Capsules | — | Vitaminnica L-Theanine 200mg - Natural Nootropics L-theanine Supplements - 60 Veg Capsules | Natural Stress Relief & Relaxation Support | Promotes Focus & Calm |
| £0.18 | 400 mg | £8.49 | 120 caps · 120 srv | Capsules | 4.6 (490) | L Theanine 400mg | 120 Vegan Capsules - 4 Months Supply | Good Alternative to L-Theanine Powder, Gummies and Drops | UK Made L'Theanine Supplement |
| £0.18 | 500 mg | £16.03 | 180 caps · 180 srv | Capsules | 4.4 (84) | L-Theanine 500 mg – 180 Vegan Capsules – High Strength Amino Acid from Green Tea | 6-Month Supply | 98% Pure, No Additives | Danish Made |
| £0.18 | 200 mg | £17.95 | 100 g · 500 srv | Powder | 4.3 (131) | L-Theanine Powder 100 g | 200 mg Daily Dose | 100 servings | GMO free | No fillers or binders | Suitable for vegans |
| £0.19 | 450 mg | £9.99 | 120 caps · 120 srv | Capsules | 5 (8) | L- theanine 450mg with Vitamin B6| High Strength 120 Vegan Capsules - 4 Months Supply | Good Alternative to L-Theanine Powder, Gummies and Drops | L Theanine Supplement |
| £0.20 | 400 mg | £19.70 | 100 g · 250 srv | Powder | 4.3 (17) | L-Theanine Powder 100g | 100% Pure Powder | Unflavored | Single Ingredient | Capsule-Free | Food Supplement |
| £0.20 | 200 mg | £9.95 | 50 g · 250 srv | Powder | 4.3 (131) | L-Theanine Powder 50 g | 200 mg Daily Dose | 250 servings | GMO free | No fillers or binders | Suitable for vegans |
| £0.21 | 400 mg | £9.99 | 120 caps · 120 srv | Capsules | 4.5 (119) | Vinco L-Theanine Supplement - 400mg x 120 High Strength L Theanine Capsules - 99%+ Purity - Supports Sleep & Relaxation - Non-GMO & Gluten Free - Made in The UK |
| £0.21 | 400 mg | £9.99 | 120 tabs · 120 srv | Tablets | 4.1 (31) | L-Theanine - 120 Vegan Tablets 400MG - 4 Months Supply - High Strength Nootropic l theanine Gluten & Cruelty Free - Pure Green Tea Extract L-Theanine for Nootropic Function |
| £0.21 | 400 mg | £9.99 | 120 caps · 120 srv | Capsules | 4.6 (11) | Homacia | L Theanine 400mg High Strength Capsules | Supports Anxiety Relief, Stress Relief, Calm Mind, Focus & Better Sleep | Vegan L-Theanine Supplement | 120 Capsules | UK Made |
| £0.22 | 400 mg | £15.49 | 180 caps · 180 srv | Capsules | 4.3 (2.7k) | L-Theanine - 401mg - 180 Capsules - 6 Months Supply - with Vitamin B6 | Black Pepper - 1 Capsule per Day | Vegan & Magnesium Stearate-Free - L Theanine Supplement for Men & Women - Made in Europe2 ingredientsTheanine—Magnesium— |
| £0.25 | 400 mg | £17.99 | 180 caps · 180 srv | Capsules | 4.2 (153) | L Theanine 400mg - 180 Capsules - 6 Months Supply | Vegan L-Theanine Supplement | No Artificial Fillers & Gluten Free | Ambervit |
| £0.28 | 400 mg | £19.94 | 360 caps · 180 srv | Capsules | 4.5 (764) | L Theanine Enriched with Vitamin B6 - High Strength L Theanine 400mg Natural Nootropics from Green Tea - 360 Vegan L-Theanine Capsules - Made in The UK Theanine Supplements By New Leaf |
| £0.28 | 200 mg | £6.95 | 25 g · 125 srv | Powder | 4.3 (131) | L-Theanine Powder 25 g | 200 mg Daily Dose | 125 servings | GMO free | No fillers or binders | Suitable for vegans |
| £0.28 | 500 mg | £16.99 | 120 caps · 120 srv | Capsules | 4.6 (29) | L-Theanine 500mg 120 Capsules | All Natural Relaxation, Stress Relief, and Focus Supplement | 100% Non GMO | UK Manufactured | Vegan & Vegetarian Friendly |
| £0.30 | 200 mg | £14.40 | 240 caps · 240 srv | Capsules | 4.5 (129) | L-Theanine 200 mg – 240 Vegan Capsules – High Strength Amino Acid from Green Tea | 8-Month Supply | 98% Pure, No Additives | Danish Made |
| £0.32 | 400 mg | £15.35 | 120 caps · 120 srv | Capsules | 4.2 (153) | L Theanine 400mg - 120 Capsules - 4 Months Supply | Vegan L-Theanine Supplement | No Artificial Fillers & Gluten Free | Ambervit |
| ~£0.35 | ~200 mg | £12.74 | 180 tabs · 180 srv | Tablets | 4.4 (798) | Kids L-Theanine 180 Chewable Tablets, 6 Months Supply, Attention Support | Stress, Focus & Concentration Support for Children, Natural Orange Flavour, Sugar-Free, Vegan | Made in UK by Health4All |
| £0.37 | 200 mg | £8.95 | 120 caps · 120 srv | Capsules | 4.4 (9.9k) | Nutricost L-Theanine 200mg, 120 Capsules - Non-GMO, Gluten Free |
| £0.40 | 400 mg | £9.49 | 120 caps · 60 srv | Capsules | 4.5 (764) | L Theanine Enriched with Vitamin B6 - High Strength L-Theanine Capsules 400mg Natural Nootropics from Green Tea - 120 Vegan Capsules - Made in The UK Supplements by New Leaf |
| £0.40 | 400 mg | £18.99 | 240 tabs · 120 srv | Tablets | 4.5 (182) | Vitamatic L-Theanine Supplement 400mg per Serving - 240 Tablets - Non-GMO, Gluten Free |
| £0.42 | 300 mg | £14.95 | 120 caps · 120 srv | Capsules | 4.5 (2) | L-Theanine 300 mg | 120 Capsules | No Fillers | 120 servings | GMO free | Additive free | Suitable for vegans |
| £0.42 | 500 mg | £24.97 | 120 caps · 120 srv | Capsules | 4.5 (112) | L Theanine and Lemon Balm Capsules 500mg - 120 Capsules - for Relaxation, Sleep & Cognitive Functions - 4 Month Supply - Vegan Supplement, No Fillers or Binders - Ambervit |
| £0.42 | 200 mg | £9.99 | 120 caps · 120 srv | Capsules | 4.8 (20) | Life Essentials L-Theanine 200mg Supplement - 120 Vegan Capsules for Stress Relief & Calm Focus - Premium Quality Natural Amino Acid for Relaxation, Brain Power & Mental Clarity |
| £0.42 | 200 mg | £9.99 | 120 tabs · 120 srv | Tablets | 4 (526) | Best Naturals L-Theanine 200mg per Tablet (400mg per 2 Tablets) - Promotes Relaxation Without Drowsiness - 120 Vegetarian Tablets - (120 Count (Pack of 1)) |
| £0.42 | 200 mg | £15.29 | 180 caps · 180 srv | Capsules | 4.5 (94) | L-Theanine 200mg, 180 Capsules – Relaxation & Focus Support – Pure Ingredients, GMO & Gluten Free – GMP Certified Nootropic Supplement by Raw Powders |
| £0.45 | 200 mg | £10.79 | 120 tabs · 120 srv | Tablets | 3.8 (108) | L-Theanine 200mg, 120 Tabs – Relaxation & Focus Support – Pure Ingredients, GMO & Gluten Free – GMP Certified Nootropic Supplement by Raw Powders |
| £0.46 | 400 mg | £21.95 | 120 caps · 120 srv | Capsules | 4.4 (24) | L Theanine High Strength 400mg | 120 Vegan Capsules | Supports Relaxation, Focus & Stress Relief | Fast Absorption | UK Made - Just Vitamins |
| £0.49 | 200 mg | £11.66 | 120 caps · 120 srv | Capsules | 4.3 (33) | L-Theanine 200mg, 120 Capsules – Relaxation & Focus Support – Pure Ingredients, GMO & Gluten Free – GMP Certified Nootropic Supplement by Raw Powders |
| £0.50 | 400 mg | £11.95 | 60 caps · 60 srv | Capsules | 4.3 (74) | L Theanine High Strength 400mg | 60 Vegan Capsules | Supports Relaxation, Focus & Stress Relief | Fast Absorption | UK Made - Just Vitamins |
| £0.50 | 200 mg | £17.99 | 180 caps · 180 srv | Capsules | 4.2 (177) | L Theanine 200mg - 180 Capsules - 6 Months Supply | Vegan L-Theanine Capsules | Nootropics Supplement | No Artificial Fillers & Gluten Free | Ambervit |
| £0.53 | 200 mg | £37.99 | 360 caps · 360 srv | Capsules | 3.7 (11) | L-Theanine 200mg - 360 Capsules | Sourced from Green Tea |
| ~£0.54 | ~200 mg | £12.99 | 120 tabs · 120 srv | Tablets | 4.4 (341) | Vitamatic L-Theanine 200mg with Caffeine 100mg 120 Vegetarian Tablets - Nootropic Supplement for Focused Energy |
| £0.56 | 400 mg | £9.99 | 90 caps · 45 srv | Capsules | 4.2 (751) | L-Theanine 400mg from Green Tea - 90 Vegan Capsules - Amino Acid Supplement – Resealable and Recyclable Pouch by Alpha01 |
| £0.56 | 300 mg | £29.99 | 180 caps · 180 srv | Capsules | 4.2 (870) | FS L-Theanine, 180 Capsules, 300mg from Green Tea Extract, High Strength | L Theanine from Green Tea | 300mg Per Serving | Calm & Focus Formula | Non-GMO, Gluten Free | UK Made |
| £0.58 | 200 mg | £42.50 | 365 caps · 365 srv | Capsules | 4.7 (6.3k) | L-Theanine 200mg Super Value Size - 365 Vegetarian Capsules |
| £0.61 | 100 mg | £14.58 | 240 caps · 240 srv | Capsules | 4.4 (2.3k) | Nutricost Caffeine with L-Theanine, 100mg of Each, 240 Capsules, 240 Servings - Non-GMO and Gluten Free | GMO-Free and Gluten Free, 240 Servings |
| £0.72 | 200 mg | £12.99 | 90 caps · 90 srv | Capsules | 3.7 (11) | L-Theanine 200mg - 90 Capsules | Sourced from Green Tea |
| £0.75 | 200 mg | £17.98 | 120 tabs · 120 srv | Tablets | 4.4 (65) | Best Naturals L-Theanine 200mg per Tablet (400mg per 2 Tablets) - Promotes Relaxation Without Drowsiness - 120 Vegetarian Tablets - (120 Count (Pack of 2)) |
| £0.78 | 100 mg | £6.99 | 90 caps · 90 srv | Capsules | 4.2 (751) | L-Theanine 100mg from Green Tea - 90 Vegan Capsules - Resealable and Recyclable Pouch by Alpha01 |
| £0.81 | 200 mg | £9.75 | 60 caps · 60 srv | Capsules | 1 (1) | Caffeine L-Theanine and Guarana – 60 Vegan Capsules – Focus and Energy Support Supplement – High Strength Formula – Vegetarian Friendly |
| £0.83 | 400 mg | £9.99 | 60 caps · 30 srv | Capsules | 4.5 (4) | L-Theanine 400mg with BioPerine - 60 Vegan Capsules - Highly Bioavailable - Resealable and Recyclable Pouch - 2 Month Supply |
| £0.89 | 200 mg | £7.99 | 90 caps · 45 srv | Capsules | 4.2 (751) | L-Theanine 200mg from Green Tea - 90 Vegan Capsules - Amino Acid Supplement – Resealable and Recyclable Pouch by Alpha01 |
| £0.90 | 250 mg | £13.46 | 60 caps · 60 srv | Capsules | 4.3 (54) | L-Theanine 250 mg + Caffeine 100 mg – Smooth & Balanced Energy – Focus, Productivity & Mental Clarity – High Strength Supplement – 60 Vegan Capsules – RAW Powders |
| £1.00 | 250 mg | £14.99 | 120 caps · 60 srv | Capsules | 4.5 (34) | L-Theanine 250mg Capsules - NOOROPOWER Zen | 4-Month Supply | 120 Veg Caps | Pure Nootropic Exam Focus, Relaxation & Alpha Waves | GABA Green Tea | Theanin & L-Theanin | No Fillers | UK Made |
| £1.06 | 200 mg | £19.00 | 90 caps · 90 srv | Capsules | 4.9 (11) | vP Vitality Pro L-Theanine 200mg 90 Capsules - for Stress Relief, Calm Focus & Sleep Support - Vegan, Third Party Tested |
| £1.11 | 200 mg | £9.99 | 90 caps · 45 srv | Capsules | 4.3 (34) | Freak Athletics Caffeine + L-Theanine Capsules - 90 Capsules, 90 Servings | 100 mg Caffeine + 200 mg L-Theanine Per Capsule, Smooth Energy & Focus Support, UK-Made Pre Workout L Theanine Supplement |
| £1.12 | 200 mg | £13.49 | 60 caps · 60 srv | Capsules | 4.7 (28) | L-Theanine & Lemon Balm, 60 Caps – Relaxation & Stress Support – Pure Ingredients, GMO & Gluten Free – GMP Certified Calming Herbal Supplement by Raw Powders |
| £1.15 | 200 mg | £13.75 | 60 caps · 60 srv | Capsules | 4.7 (56) | Nature's Best L, Theanine 200mg, 60 Capsules (2 Month Supply) | Small Easy, to, Swallow Capsules |
| £1.16 | 200 mg | £13.95 | 60 caps · 60 srv | Capsules | 4 (127) | L-Theanine 200mg Vegan as PhytoSure Certified | Supports Healthy Relaxation & Focus | 3rd Party Tested | Clean Label, Non-GMO, Gluten & Soy Free, Hypoallergenic | by Health Thru Nutrition (Pack of 60) |
| £1.17 | 400 mg | £27.99 | 120 caps · 60 srv | Capsules | 4.5 (599) | MM L Theanine | 120 L-Theanine Capsules from Green Tea - High Strength 1000mg Green Tea Extract Providing 400mg L'theanine per Serving | L Theanine Supplement | Non-GMO Gluten Free | Made in UK |
| ~£1.25 | ~200 mg | £14.99 | 60 caps · 60 srv | Capsules | 3.9 (157) | HealthEssent Dopamine Balance Complex – L-Tyrosine, L-Theanine, Ginkgo Biloba & Magnesium, Dopamine Precursor for Natural Mood & Focus Formula – 60 Vegan Capsules2 ingredientsTheanine—Magnesium— |
| £1.25 | 300 mg | £22.49 | 120 caps · 60 srv | Capsules | 4.5 (152) | New: L-Theanine - Natural Green Tea Extract (Decaf) - 120 Capsules - 300mg L-Theanine per Serving - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - UK Made - Zero Additives | Natural - Decaf - Sleep & Relaxation Support - Mental Clarity - Non-Synthetic Theanine - Zero Additives |
| £1.33 | 100 mg | £7.99 | 60 caps · 60 srv | Capsules | 4.6 (28) | Organic L-Theanine 100mg from Green Tea Extract - 60 Vegan Capsules (2 Months Supply) - High Strength Theanine Amino Acid Supplement - By Alpha01 |
| £1.48 | 300 mg | £19.99 | 90 caps · 45 srv | Capsules | 4.2 (870) | FS L-Theanine, 90 Capsules, 300mg from Green Tea Extract, High Strength | L Theanine from Green Tea | 300mg Per Serving | Calm & Focus Formula | Non-GMO, Gluten Free | UK Made |
| £1.62 | 350 mg | £16.99 | 60 g · 30 srv | Liquid | 4.3 (73) | LIPOSOMAL Liquid L-Theanine Drops for Stress Relief, Relaxation, Focus Without Drowsiness with MAX Absorption, 350mg per Serving |
| ~£1.67 | ~200 mg | £9.99 | 60 caps · 30 srv | Capsules | 4.1 (60) | L-Theanine Green Tea Extract with Added Lemon Balm Extract and Chelated Magnesium Glycinate - Derived from Green Tea Leaves - Sleep & Relaxation Support - Mental Clarity2 ingredientsTheanine—Magnesium— |
| ~£1.67 | ~200 mg | £9.99 | 60 gummies · 30 srv | Gummies | 3.8 (85) | Relaxation Bedtime Sleep Aid - Montmorency Cherry Tart Extract and More - Sleep Gummies with a Calming Blend of L-Theanine, Chamomile, Lemon Balm and Lavender - 60 Gummies |
| £1.67 | 250 mg | £24.99 | 60 caps · 60 srv | Capsules | 4.2 (140) | Natural L theanine Relaxation Aid | 250mg L-theanine GABA Alternative (60) | 1-A-Day, 99% Pure l theanine, Relaxation without sedation, fast-acting l theanine supplement |
| £1.70 | 50 mg | £7.64 | 90 tabs · 90 srv | Tablets | 4.4 (798) | Kids L-Theanine 90 Chewable Tablets, 3 Months Supply, Attention Support | Stress, Focus & Concentration Support for Children, Natural Orange Flavour, Sugar-Free, Vegan | Made in UK by Health4All |
| £1.83 | 200 mg | £21.98 | 60 caps · 60 srv | Capsules | 5 (2) | Swanson Suntheanine L-Theanine, 200mg - 60 vcaps |
| £2.00 | 250 mg | £14.99 | 30 caps · 30 srv | Capsules | 4.2 (140) | Natural L theanine Relaxation Aid | 250mg L-theanine GABA Alternative (30) | 1-A-Day, 99% Pure l theanine, Relaxation without sedation, fast-acting l theanine supplement |
| £2.31 | 200 mg | £27.72 | 60 caps · 60 srv | Capsules | 5 (1) | L-Theanine 200mg | 60 Vegan Capsules | Green Tea Amino Acid | Naturally Found in Camellia Sinensis | Just L-Theanine & a Vegetable Capsule | No Additives |
| £2.40 | 250 mg | £17.99 | 60 gummies · 30 srv | Gummies | 4.4 (44) | L Theanine Gummies for Calm Focus & Mental Balance with Vitamin B6 – 250 mg L Theanine per Serving, Delicious Mixed Berry Flavour, 60 Vegan Gummies – GUMEEZ |
| £2.50 | 200 mg | £14.99 | 60 gummies · 30 srv | Gummies | 5 (6) | Sleep Gummies – L-Theanine & Magnesium Bisglycinate – with Valerian, Passionflower & 5-HTP – Calm & Relaxation Support – Vegan & Sugar Free, Blueberry Flavour – 60 Gummies2 ingredientsTheanine—Magnesium— |
| ~£2.50 | ~200 mg | £14.99 | 60 gummies · 30 srv | Gummies | 3.8 (308) | Night Time Complex Gummy | Chamomile, Lemon Balm, Lavender, Griffonia & L-Theanine | Passionfruit Flavour | 60 Vegan Gummies | Sleep & Bed Relaxation Support by NUTRIGUMS® |
| £2.61 | 200 mg | £15.65 | 30 caps · 30 srv | Capsules | 4.8 (48) | Nutricost L-Theanine 200 mg, 30 capsules |
| ~£2.67 | ~200 mg | £15.99 | 60 gummies · 30 srv | Gummies | 3.8 (227) | LITE LVL Sleep Gummies for Adults | High Strength with Lemon Balm, Camomile, Lavender & L-Theanine for Relaxation & Sleep Support | Aids Natural Melatonin Production | 60 Vegan & Sugar Free Gummies |
| £2.75 | 200 mg | £32.99 | 60 caps · 60 srv | Capsules | 4.5 (2) | Jarrow Formulas - Theanine | 200 mg L-Theanine for Relaxation and Well-Being - 60 Capsules |
| ~£2.83 | ~200 mg | £16.98 | 60 caps · 30 srv | Capsules | 4.5 (27) | Lamberts L Theanine with Lemon Balm Vegan - 60 Capsules |
| £2.83 | 200 mg | £16.99 | 60 tabs · 30 srv | Tablets | 4.2 (14) | Focus Nootropic Brain Supplement | Alpha GPC 300mg + Citicoline | 25-in-1 Caffeine-Free Formula | Citicoline 250mg + L-Theanine 200mg | Focus, Memory & Mental Clarity | 60 Vegan Tablets |
| ~£2.92 | ~200 mg | £35.00 | 60 gummies · 60 srv | Gummies | 4.6 (32) | Focus Gummies, Caffeine-Free Nootropic with Alpha GPC, L-Theanine, Bacopa Monnieri, Rhodiola Rosea, Ginkgo Biloba-Vegan Supplement, 60 Gummies for 30 Days |
| ~£3.17 | ~200 mg | £18.99 | 60 gummies · 30 srv | Gummies | 4.5 (18) | Bedtime Gummies for Adults - L- Theanine, Magnesium, Valerian Root & Passion Flower - Supports Relaxation & Sleep Support - Vegan - 60 Gummies (30 Servings)2 ingredientsTheanine—Magnesium— |
| £3.22 | 100 mg | £28.95 | 90 caps · 90 srv | Capsules | 3.9 (17) | Higher Nature L Theanine - Find Your Inner Calm - 90 Capsules | Supports Anxiety & Tension, Green Tea Extract, Anxiety Relief, Gluten Free, Vegan & Vegetarian |
| £3.33 | 200 mg | £19.99 | 60 gummies · 30 srv | Gummies | 4.4 (35) | L-Theanine Gummies 200 mg | Lemon Balm & Vitamin B6 | 60 Gummies | Novomins | L-Theanine Supplement for Focus & Concentration | Vegan & Gluten-Free | 1-Month Supply |
| £3.90 | 160 mg | £24.99 | 40 gummies · 40 srv | Gummies | 4 (143) | 80mg Caffeine & 160mg L-Theanine Chews | Mint Matcha | 40 Servings |
| £3.90 | 160 mg | £24.99 | 40 gummies · 40 srv | Gummies | 4.6 (116) | 80mg Caffeine & 160mg L-Theanine Chews | Coffee Caramel | 40 Servings |
| £4.61 | 200 mg | £27.65 | 60 tabs · 30 srv | Tablets | 4.2 (17) | Natural Factors, Stress Relax Suntheanine, L-Theanine, 100mg, 60 Vegan Chewable Tablets, Vegetarian, Soy Free, Gluten Free, Non-GMO |
| ~£4.67 | ~200 mg | £28.00 | 60 caps · 30 srv | Capsules | 3.4 (223) | Numan Sleep Deep Support – 60 Vegan Capsules with Chamomile, L-Theanine, Magnesium Citrate - Night-time Support, Made in UK2 ingredientsTheanine—Magnesium— |
| £5.00 | 100 mg | £14.99 | 60 gummies · 30 srv | Gummies | 4.4 (11) | Natural Sleep Support for Men & Women – Supports Calm Mood, Relaxation & Restful Sleep – 60 Vegan Gummies - with L-theanine, Chamomile Extract, Lemon Balm Extract, Glycine and Vitamin B6 |
| £5.43 | 200 mg | £32.57 | 30 caps · 30 srv | Capsules | 5 (2) | Life Extension Enhanced Stress Relief, Lemon Balm and L-Theanine, 30 Vegan Capsules, Gluten Free, Vegetarian, Soy Free, Non-GMO |
| £5.46 | 160 mg | £13.99 | 16 gummies · 16 srv | Gummies | 4 (143) | 80mg Caffeine & 160mg L-Theanine Chews | Mint Matcha | 16 Servings |
| ~£5.83 | ~200 mg | £34.99 | 30 gummies · 30 srv | Gummies | 5 (1) | Gumnut Vibe & Thrive Teen Focus Gummies with L-Theanine, Cherry, 30 Count | Choline & L-Theanine Immunoberry Sugar Free Formula Vegan & Gluten Free Cherry Flavour Teen Daily Wellness |
| £6.66 | 50 mg | £9.99 | 30 gummies · 30 srv | Gummies | 4.1 (788) | Kids L-Theanine Gummies | 50mg of L Theanine | 30 Gummies | Novomins | Lemon Balm & Vitamin B6 | L Theanine Supplement for Focus & Concentration | Vegan & Gluten Free | 1-Month Supply |
| £6.66 | 50 mg | £9.99 | 30 gummies · 30 srv | Gummies | 4.3 (94) | Kids L Theanine Gummies – 50mg with Magnesium Glycinate & Prebiotics to Improve Kids Concentration & Focus | Sugar-Free, Vegan & Chewable | Ages 3+ | Berry Flavour | 1 Month Supply2 ingredientsTheanine—Magnesium— |
| £6.67 | 200 mg | £39.99 | 30 caps · 30 srv | Capsules | 4.5 (4) | URENUS Brain & Cognitive Formula | Advanced Nootropic Complex | 200mg L-Theanine, 140mg Rhodiola Rosea, Lion's Mane, Ginkgo Biloba, Bacopa Monnieri | B Vitamins, Zinc, Iron & Iodine | 30 Capsules3 ingredientsTheanine—Zinc—Iodine— |
| £6.78 | 200 mg | £20.35 | 30 caps · 15 srv | Capsules | 4.4 (307) | L-Theanine & Lemon Balm 30 Vegetable Capsules VD (Vegan) |
| £8.64 | 200 mg | £51.85 | 60 caps · 30 srv | Capsules | 4.2 (25) | Pure Encapsulations L-Theanine Suntheanine, 60 Capsules | Green Tea Amino Acid, 200mg Clinically-Studied Suntheanine L-Theanine, Pure & Highly Bioavailable Form |
| £64.95 | 200 mg | £64.95 | 1 kg · 5 srv | Powder | 4.3 (131) | L-Theanine Powder 1 kg | 200 mg Daily Dose | 5,000 servings | GMO free | No fillers or binders | Suitable for vegans |
| £99.90 | 100 mg | £9.99 | 1 caps · 1 srv | Capsules | 4.8 (34) | L-Theanine & Magnesium Glycinate. Superior Potency & Bioavailability. High Absorbency, Easily Digestible. FSSC 22000 (Food Safety) Certified.2 ingredientsTheanine—Magnesium— |
| — | ~200 mg | £20.99 | — | Capsules | 4.8 (18) | Premium Calm Complex | Stress & Anxiety Relief | L-Theanine, Magnesium Bisglycinate, Lemon Balm, Passionflower, Lavender, Taurine & Zinc | High Strength Formula | Made in the UK3 ingredientsTheanine—Zinc—Magnesium— |
| — | 140 mg | £7.99 | — | Powder | 3.2 (7) | MUSE Caffeine Pouches Smart Energy Supplement - Sugar Free & Nicotine Free Focus Formula with Alpha GPC & L-Theanine - Tropical (Boost 140mg) |