Top 9 Caffeine and L-Theanine UK – Amino Acid Nutritional Supplements

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1. Rise Supplements

Manufactured in ISO Licenced Facilities in The UK, Caffeine 100mg + L-Theanine 250mg Attention Stack by Rise Supplements 120 Vegan Capsules, Productivity Complex | NOOTROPIC Blend | Non-GMO

Rise Supplements - We offer a 100% money back guarantee for anyone in any way unhappy with the product. Synergised focus & calm. Each bottle contains 120 capsules of Caffeine 100mg and L-Theanine 250mg; a 2 month supply. The combination of both helps to produce a productive "flow-zone"; calmness, creativity and productivity.

New higher strength. L-theanine, the key calming ingredient naturally found in green tea, is a substance that has been known for centuries for its calming herbal effects. Rise & shine with confidence. Easy-swallow capsules. Non-gMO. We’ve upped the dosage of l-theanine from 200mg to 250mg to help improve the calming effects of this high strength blend and complement the Caffeine even further.

Gluten & Dairy free. Suitable for Vegetarians & Vegans. Just 1-2 capsules per day is the recommended dose you’ll need to experience all the benefits that this stack can provide. This popular productivity stack synergises the focus and energy boosting effects of Caffeine with the calming relaxation of L-theanine. Found in nature. All our supplements are manufactured in the uk in iso certified facilities with strict quality control assurances.
BrandRise Supplements
ManufacturerRise Supplements
Height12 cm (4.72 Inches)
Length6 cm (2.36 Inches)
Width7 cm (2.76 Inches)

2. Raw Powders

RP Caffeine Pills 100mg & L Theanine 250mg Per Capsule | 60 Vegan Capsules | Free from Fillers | Nootropic Smart Caffeine Tablets | Productivity Blend | Non GMO & Gluten Free 60 Capsules

Raw Powders - A great choice in supplements - Our Caffeine & L-Theanine supplement is gluten, dairy and allergen free and suitable for vegetarians and vegans. Caffeine & l theanine - we have created an optimum blend of caffeinie and L Theanine in a conveinient capsule with no nasty added ingredients.

We have added nothing extra to this supplement, just Caffeine and L Theanine. As the name suggests purity is at the heart of our business. Each serving of 1 daily capsule provides Caffeine 100mg & L-Theanine 250mg. Why raw powders? all of our products carry a certificate of Conformance, so that you can be confident in the quality of the supplements that you are purchasing.

No fillers or binders - each pouch contains 60 caffeine & l theanine Capsules. Raw passion - we are a team of mental health and Fitness experts, and our main drive is to deliver high quality supplements with great customer support.
BrandRaw Powders
ManufacturerRaw Powders
Part Number5065002563804

3. Freak Athletics

L-Theanine 200mg to Create The Ultimate Nootropic Supplement, Made in The UK High Quality Caffeine Tablets Guaranteed, Caffeine Plus+ by Freak Athletics, Combining Caffeine 100mg

Freak Athletics - Safeguarded by the highest manufacturing and hygiene standards in the world. Premium quality - at freak athletics we are highly driven in providing you with the highest quality supplements available on the market. Using only the finest & high quality ingredients to create an advanced Pre Workout supplement with an optimal formula of ingredients.

Caffeine plus+ provide you a all-natural formula that gives the full benefits of caffeine & L Theanine. This allows the user to feel its mind-energizing, jitters, fat burning, and enhanced focus with a sense of calm. Our optimal blend consists of 100mg of caffeine & 200mg L-Theanine, giving the user a smooth boost in energy & focus that lasts. Suitable for Vegetarians and Vegans. Our local manufacturing means you receive only the BEST! Clean & natural - almost everyone has experienced the negative side effects of caffeine quick jolt of energy followed by a crash, tiredness. Made in the uk - caffeine plus+ has been manufactured to the highest standards in the UK.

We formulated caffeine Plus+ with powerful all-natural ingredients: caffeine & l-theanine. By combining the two ingredients at a 2:1 ratio, irritability, the negative side effects of caffeine are neutralized. Natural ingredients - free from: gluten, wheat, Dairy, artificial flavours, soy, Sweeteners and Preservatives. Energy, focus & performance - are you looking for something that gives you powerful long-lasting energy & focus without the harsh unwanted side effects most energy supplements have? Our clinically researched formula is designed just for you.
BrandFreak Athletics
ManufacturerFreak Athletics
Height11 cm (4.33 Inches)
Length6 cm (2.36 Inches)
Width6 cm (2.36 Inches)


L-Theanine 100mg and Caffeine 50mg Capsules | Energy Boost, Alertness, Invigorating | Oxford Vitality 120

Ov OXFORD VITALITY - Delivering market leading effectiveness and strength. Suitable for vegetarians and vegans - We’ve ensured that our L-Theanine and Caffeine capsules suitable for vegetarians and vegans so that everyone can enjoy the benefits! Market leading product safety - our supplements have been expertly created to the strictest GMP guidelines in our facility here in the UK, meaning we can guarantee the quality and safety of every product.

Letter-box friendly - at oxford vitality we always want to deliver, which is why we pack all our products into letter-box friendly packaging. So, even if you're out, you’ll still get your parcel. Advanced formulation - this product has been independently formulated by our team of certified in-house nutritionists. Superior ingredients - our L-Theanine and Caffeine has been expertly sourced by our suppliers to ensure superior quality.
Part NumberC201

5. Nutravita

120 Vegan Capsules, GABA Alternative, L-Theanine 350mg, Non GMO and Allergen Free Supplements, Made in The UK by Nutravita, Caffeine Free, High Strength Premium L Theanine

Nutravita - This amino acid is found naturally in tea leaves, particularly green tea. Customer peace of mind – we have done our best to provide as much information as possible, and so if you are not satisfied, but if you do have any questions please reach out to our very helpful customer care team. They will be happy to provide personalised assistance to help this supplement fit into your lifestyle.

We have a dedicated team of pharmacologists, and safeguarded by the highest manufacturing standards in the world GMP, chemists and research scientists working to source the finest and most beneficial ingredients. This supplement contains 120 capsules per bottle, providing a great value for money with a 4 month supply. Our high quality products are manufactured, batch tested and certified in the UK, BRC. We always hope our customers are 100% happy with the product and service they receive, please do not hesitate to contact us.

What is the story behind nutravita? - nutravita is a recognised and trusted vitamins & supplements brand providing thousands of customers across the world for over 6 years. Amino acids, are compounds that play many critical roles in your body. This high strength l-theanine provides you with the benefits of green tea, often referred to as the building blocks of proteins, without needing to drink the highly caffeinated tea. What is l-theanine? - l-theanine is a type of amino acid. We only use the finest quality L-Theanine in our product and we do not add any additives, binders or fillers.


30 Servings, Citrulline Malate,L-Tyrosine,L- Theanine | Delicious Sour Apple, Power, Endeva Nutrition Pre-Workout 2.0 | Increase Energy, Fatigue Delay | Caffeine, Beta Alanine

ENDEVA NUTRITION - Effectively dosed and transparent formulas. Caffeine 300mg beta alanine 3000mg citrulline Malate 7000mg L-Tyrosine 1000mg L- Theanine 100mg. Yes to improved focus and mental clarity YES to sustained energy throughout your session YES to more power, delayed fatigue and awesome workouts.

Highest quality ingredients to maximise your training performance and with an easy to mix delicious taste. Delicious sour apple flavour - 30 servings per tub, Suitable for Vegans and Vegetarians. 100% science-backed ingredients: the worlds smartest pre-workout formula. No proprieratry blends, no fluff, no fillers just 100% effective supplements. No sluggish workouts NO jitters or post-training crash NO micro-dosing or under-dosing. Wada legal ingredients, perfect for those drug tested athletes, or people worried about ingredients.
Weight0.36 kg (0.79 Pounds)
Part Number001

7. Mindful Matter

MM L Theanine 400mg High Strength Capsules | 120 Vegan Capsules | L-Theanine Nootropic Supplement | Manufactured in ISO Licenced Facilities | Non, GMO, Dairy Free & Gluten Free & Allergen Free

Mindful Matter - We actively combine science with nature, creating solutions to the physical and mental strains of life, helping you to discover true balance. Each bottle contains 120 capsules providing great value for money with 4 months supply. Welcome to the mindful movement - mindful matter was born on the idea that we can consciously and purposely improve the overall quality of our lives and wellbeing.

By supplementing with l theanine you can experience the main benefits of tea without the Caffeine and other ingredients in green tea. Choosing the right supplement - Our L Theanine is gluten, dairy and allergen free and suitable for vegetarians and vegans. All our products are made up from premium ingredients and manufactured in ISO Licensed facilities.

Made in the uk in iso licensed facilities. If you are unsatisfied for any reason we offer a 100% money back guarantee. Our top priority is the quality of our products. Great value for money - each serving of 1 daily capsule provides 400mg of L Theanine. They are subject to multiple quality control checks throughout the manufacturing process. L theanine - l-theanine is an amino acid found most commonly in tea leaves, both green and black tea. No questions asked.
BrandMindful Matter
ManufacturerMindful Matter
Height11.5 cm (4.53 Inches)
Length6 cm (2.36 Inches)
Width6 cm (2.36 Inches)
Part Number5060503213326

8. Applied Nutrition

Weight Loss, Thermogenic Energy Detonator Supplement, L Carnitine, Fat Burner with Green Tea, Tyrosine, Theanine, Shred-X 300g, 30 Servings Strawberry Kiwi, Applied Nutrition Shred X Thermo Powder

Applied Nutrition - Shred x powder is the ultimate fat burner. Suitable for Men and Women. Contains 200 mg of Caffeine, to boost energy. Halal Certified Product. It’ll help your weight management combined with a balanced diet and exercise. Designed to support your training goals, increase energy, Shred-X is ideal for anyone wanting to lose weight, and maintain a razor-sharp mental focus. Potent weight management thermo powder with 3g of L-Carnitine & 450mg of Green Tea. B vitamins contribute to the reduction of tiredness and fatigue throughout the day.
BrandApplied Nutrition
ManufacturerApplied Nutrition
Weight0.3 kg (0.66 Pounds)
Part NumberSHRED

9. BriteLife

BL L Theanine Capsules High Strength 400mg Per Vegan Capsule | 120 Vegan Tablets | High Strength Nootropic Supplement | Non GMO & Gluten Free | Manufactured in ISO Licensed Facilities in The UK

BriteLife - Each bottle contains 120 capsules providing great value for money with a 4 month supply. This product is Non-GMO. High-strength formula - great value - each serving of 1 daily capsule provides 400mg of L Theanine.

L theanine - l-theanine is a amino acid found in Green Tea Leaves. The bl commitment to mental wellbeing - our directive is to provide every customer with the highest quality supplement, to benefit both cognitive and overall health. By purchasing you’re helping a worthy cause - a portion of each sale is donated directly to the Alzheimer’s Society. A better way to supplement - Our L Theanine supplement is dairy, gluten and allergen free and suitable for vegans and vegetarians.

Thank you. You have helped donate thousands of pounds to date. Get one of the main benefits of Green Tea without the Caffeine and other Ingredients found in Green Tea. Manufactured in iso licenced facilities in the uk - Our UK-based team of experts source only the highest quality ingredients that meet our strict quality control and hygiene standards.
Part NumberBL-LThea120-1