10 Best Magnesium L Threonate in The UK

Last updated on 23/06/2025

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Best Choice

9.7

Exceptional

Dr. Mercola

Magnesium L-Threonate (90 per Bottle): 30 Day Supply - Dr Mercola

Why We Love It

Patented formula in fewer capsules.
Includes eco-friendly packaging.
Prevents possible Magnesium deficiency.

Main Highlights

Fewer capsules delivers the same 2,000 mg of patented Magtein Magnesium L-Threonate in 3 powder dose capsules instead of 4 liquid doses
New packaging now comes in a more eco-friendly glass bottle
Don't allow yourself to be one of the 80 percent who may be running low Order Magnesium L-Threonate today

Double Wood Supplements

Double Wood Magnesium L Threonate Supplement | 100 Capsules (25 Servings) High Strength Magnesium L Threonate (4 per Serving) 2000mg

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Why We Love It

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Main Highlights

Each bottle contains 100 capsules (25 Servings) providing 2000mg of Magnesium L-Threonate
MAGTEIN - Magtein is a unique, patented form of magnesium L-threonate, known for its ability to reach the brain efficiently. It’s a specialized magnesium supplement designed to support overall wellness and provide a high-quality source of magnesium for your daily routine.
THE BENEFITS OF OUR SUPPLEMENTS - Our magtein capsules are gluten free and made with Non GMO ingredients
MANUFACTURED IN USA
THIRD PARTY TESTED – Our capsules are third party tested for purity and potency.

Magtein® Magnesium – 120 Capsules – High Strength 2100mg – Pullulan Capsules – UK Made to GMP & HACCP Standards – Zero Additives

Why We Love It

Improves cognitive functions aided by effective absorption.
Highest potency ingredient available.
Supports ecological restoration.

Main Highlights

✔️COGNITIVE SUPPORT INCLUDING LEARNING, MEMORY, MOOD, RELAXATION & SLEEP. Having sufficient levels of circulating magnesium in the brain is critical to cognitive health. Magtein Magnesium can effectively raise these levels resulting in improved recall, reduced age-related memory issues, and relaxation.
✔️SUPERIOR BIOAVAILABILITY. Many forms of magnesium are poorly absorbed by the body. Magtein Magnesium is the only high absorption, clinically studied magnesium of its kind, shown to effectively raise concentrations in the brain. What isn’t used by the brain is distributed to various areas of the body, where it assists in regulating heart and lung function, muscular contractions, hydration, and more than 300 other vital processes.
✔️MAXIMUM POTENCY 2100MG MAGTEIN MAGNESIUM PER 4 CAPSULE SERVING. Our Magtein Magnesium supplement has the highest level of active ingredient on the market containing 2100mg per 4 capsule daily serving.
✔️RECOMMENDED BY EXPERTS. Leading neuroscientists including Dr. Andrew Huberman recommend consuming this specific form of Magnesium to help with initially falling asleep and for a deeper sleep. Magtein Magnesium is one component of the 'sleep cocktail' alongside Apigenin and L-Theanine, three supplements that work synergistically to improve sleep quality.
✔️GENUINE MAGTEIN MAGNESIUM, 100% VEGAN WITH NO FILLERS, BINDERS OR ADDITIVES. At Time Health we believe in clean nutrition which is why you won’t find any nasty stuff in our products including any binders, fillers or additives. Buyers should be aware Magtein is a very expensive ingredient and should therefore exercise caution before purchasing much cheaper alternatives. Verification can be made through the official distributor list published by Magtein.
✔️UK MADE TO HIGH QUALITY GMP STANDARDS, NEXT GENERATION NATURAL & ECO PULLULAN CAPSULES. Our Magtein Magnesium supplement is manufactured in the UK to GMP standards, ensuring the highest quality. Many cheaper supplements use capsules made from hypromellose which goes through heavy processing and produces non-environmentally friendly, harmful bi-products. Pullulan is the next generation in encapsulation, derived from tapioca and processed with water.
✔️OVER 92,000 TREES PLANTED AND COUNTING. Our supplements are not only good for you but also for the planet. We are proud supporters of Ecologi’s habitat restoration projects and plant a tree with every single order. We also contribute to rewilding efforts and carbon dioxide removal by funding the development of new blue carbon sinks.
Please note: packaging may vary.

Magnesium L-Threonate 2100mg Daily Dose – Magtein 30 Day Supply - Providing 151mg of Active Elemental Magnesium - Easily Absorbable - Highly Bioavailable – No Artificial fillers - UK Manufactured

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Why We Love It

High potency for fast absorption.
Promotes normal body functions.
Pure, risk-free guarantee available.

Main Highlights

✔ HIGHEST POTENCY – Swiss BioEnergetics Magnesium L-Threonate (sometimes referred to as Magnesium for the brain) is a unique form of magnesium that is delivered into the brain and provides a convenient fast absorbing 151mg of active elemental Magnesium from 2100mg of Magnesium L-Threonate. Made without artificial fillers, artificial binders or artificial flow agents
✔ EFFECTIVE – Magnesium contributes to a reduction of tiredness and fatigue, normal functioning of the nervous system, normal psychological function and contributes to the maintenance of normal bones and teeth. Magnesium also contributes to normal muscle function and normal protein synthesis
✔ PURE – Swiss BioEnergetics Magnesium L- Threonate capsules are manufactured using only the finest quality raw materials in their best grade and purest form so that we can guarantee you receive a consistently high-quality product. Utilising the latest research to bring you premium, balanced, scientifically validated formulations free from: ✘gluten, ✘added sugar, ✘yeast, ✘GMOs. Suitable for Vegetarians and Vegans
✔ PEACE OF MIND – our nutritional food supplements, herbals, cleansers, tablets, powders, antioxidants and anti-inflammatory pills are manufactured with care exclusively in the UK to GMP code of practice and ISO 9001 testing, so you are safeguarded by the highest standards in the world
✔ NO RISK GUARANTEE – we have a no questions asked, money back guarantee policy so you can improve your health with no risk

Vinco Triple Magnesium L-Threonate with L-Theanine & Apigenin – 120 Capsules - 3-in-1 Apigenin Threonate Magnesium Supplements for Sleep & Relaxation - Triple Magnesium Complex Made in The UK

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Why We Love It

Clinically studied for highest absorption.
Promotes calm and deep sleep.
Genuine ingredients for your wellness.

Main Highlights

𝗧𝗛𝗘 𝗧𝗥𝗨𝗘 "𝗛𝗨𝗕𝗘𝗥𝗠𝗔𝗡 𝗦𝗟𝗘𝗘𝗣 𝗖𝗢𝗖𝗞𝗧𝗔𝗜𝗟". The true original Magnesium Sleep Stack recommended by Dr. Andrew Huberman with the authentic ingredients and exact dosages: 1000mg Magtein L Threonate Magnesium﹢ L Theanine 200mg﹢ Apigenin 50mg
𝗧𝗥𝗜𝗣𝗟𝗘 𝗦𝗧𝗥𝗘𝗡𝗚𝗧𝗛 𝗠𝗔𝗚𝗡𝗘𝗦𝗜𝗨𝗠 𝗙𝗢𝗥 𝗦𝗟𝗘𝗘𝗣 & 𝗖𝗔𝗟𝗠. A comprehensive extra strength pure elemental magnesium for sleep, a natural sleep aid for adults with clinically studied Magtein Magnesium L Threonate enhanced with L'Theanine and Apigenin to help calm & unwind a busy mind and support deep & restful sleep without grogginess or brain fog.*
𝗠𝗔𝗚𝗧𝗘𝗜𝗡 | 𝗖𝗟𝗜𝗡𝗜𝗖𝗔𝗟𝗟𝗬 𝗦𝗧𝗨𝗗𝗜𝗘𝗗 𝗛𝗜𝗚𝗛𝗘𝗦𝗧 𝗔𝗕𝗦𝗢𝗥𝗣𝗧𝗜𝗢𝗡 𝗠𝗔𝗚𝗡𝗘𝗦𝗜𝗨𝗠. Magtein Magnesium L-Threonate is the only clinically studied magnesium through randomized double blind placebo controlled trials and proven to have the highest levels of absorption than any form of magnesium and shown to support stress, mood, sleep quality & cognitive function in adults.
𝗖𝗢𝗚𝗡𝗜𝗧𝗜V𝗘 𝗦𝗨𝗣𝗣𝗢𝗥𝗧: Our triple magnesium complex helps to promote deep sleep, calms the mind, and supports cognitive function. Magnesium supplements for sleep is an excellent solution for those seeking a natural and safe solution to sleep and cognitive wellness.
GENUINE MAGTEIN MAGNESIUM L-THREONATE – Unlike many products claiming to contain Magtein Magnesium L-Threonate, our supplement contains the genuine patented ingredient. Our Trademark Licence Agreement with Magtein is available upon request.
CLEAN FORMULA: Our magnesium sleep supplements by Vinco Supplements is meticulously crafted in a state-of-the-art facility located in Britain. Our magnesium l- threonate apigenin theanine supplement is not only free of GMOs and gluten but is also 100% vegan, providing you with a wholesome and conscientiously sourced wellness solution.

Vitabay Magnesium-L-Threonate 2000mg - 120 Vegan Liposomal Magnesium L Threonate 2000mg Softgels - Highly Dosed Softgels with Vitamin D3 Cholecalciferol (1000 IU) & K2 MK7 (100mcg) - Laboratory Tested

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Why We Love It

Improved absorption of magnesium.
Vegan and organic ingredients.
High-quality laboratory tested product.

Main Highlights

Bioavailability - Liposomal encapsulation protects Magnesium L Threonate from degradation by stomach acid and digestive enzymes, resulting in improved absorption and higher levels of available magnesium.
With Vitamin D3 & K2 - Our magnesium threonate is a special form of magnesium that is well absorbed by the body. One Softgel includes 1000 IU of Vitamin D3 Cholecalciferol and 100mcg of Vitamin K2 MK7.
Vegan without Additives - Our magnesium L threonate supplements consist exclusively of organic ingredients. Free from solvent residues, nanoparticles, preservatives and genetic engineering.
Laboratory Tested - Thanks to extensive controls and processing in accordance with international quality standards, we guarantee the tested quality and purity of our L threonate magnesium softgels.
25 Years of Experience - Our goal is to produce the best magnesium L- threonate. Our 25 years of experience enable us to produce unique, gentle products for maximum effectiveness - Only the best for your body!

The Supplement Stack - Sleep - 3 in 1 Magnesium L-Threonate, L-Theanine & Apigenin for Deeper Sleep, Relaxation, Cognitive Support, and Mood Enhancement. Clinically-Proven - UK Company

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Why We Love It

Promotes faster sleep onset.
Enhances overall sleep quality.
Reduces sleep latency effectively.

Main Highlights

✅ 𝗘𝗫𝗣𝗘𝗥𝗧-𝗜𝗡𝗦𝗣𝗜𝗥𝗘𝗗 𝗙𝗢𝗥𝗠𝗨𝗟𝗔: Featuring precise dosages of Magnesium L-Threonate, Apigenin & L-Theanine, inspired by leading neuroscience research for optimal night-time support.
✅ 𝗧𝗥𝗜𝗣𝗟𝗘-𝗔𝗖𝗧𝗜𝗢𝗡 𝗦𝗨𝗣𝗣𝗢𝗥𝗧 – Formulated to promote deep relaxation, calm, and help your body ease naturally into rest as part of a mindful evening routine.
✅ 𝗠𝗔𝗚𝗡𝗘𝗦𝗜𝗨𝗠 𝗟-𝗧𝗛𝗥𝗘𝗢𝗡𝗔𝗧𝗘: A highly bioavailable form of magnesium, shown to contribute to normal psychological function and the healthy functioning of the nervous system.
✅ 𝗔𝗣𝗜𝗚𝗘𝗡𝗜𝗡: A flavonoid sourced from plants, traditionally used to support tranquillity and relaxation before bed.
✅ 𝗟-𝗧𝗛𝗘𝗔𝗡𝗜𝗡𝗘: Naturally found in green tea, included for its ability to promote calm focus and support the body's natural relaxation pathways.
✅ 𝗣𝗨𝗥𝗘 & 𝗣𝗢𝗧𝗘𝗡𝗧 – A 3rd-party lab-tested, UK-made formula, free from fillers and crafted with exceptionally pure, synergistic ingredients to support your comprehensive night-time wellbeing.

Magnesium L-Threonate 1000mg 240 Tablets

Why We Love It

Enhanced brain magnesium levels.
Supports memory and cognition.
Vegetarian-friendly formula.

Main Highlights

Magnesium L Threonate is the latest form of magnesium which provides a very high level of bioavailability and which can easily cross the blood bran barrier
Significantly increasing levels of magnesium in the brain
Increased levels of brain magnesium can enhance memory, learning and cognition and users have reported lower levels of 'brain fog', improvement in levels of anxiety, increased focus and lucid dreaming
Suitable for vegetarians

Hepatica Magnesium Complex per Serving 2000mg | L-Threonate, Bisglycinate & Taurate | 120 Vegan Capsules | High Strength Magnesium Supplement | No Fillers or Bulkers

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Why We Love It

Certified quality for safe consumption.
No artificial glazing in capsules.
Unbeatable value with 30 servings.

Main Highlights

HIGH-STRENGTH MAGNESIUM COMPLEX – 2000MG PER SERVING – A premium blend of Magnesium L-Threonate, Bisglycinate & Taurate, offering superior bioavailability and absorption for maximum effectiveness.
SUPPORTS BRAIN, MUSCLE & NERVOUS SYSTEM HEALTH – Magnesium plays a vital role in cognitive function, muscle recovery, nerve support, and relaxation, making it essential for overall well-being.
ENHANCED ABSORPTION & GENTLE ON DIGESTION – Unlike standard magnesium supplements, our highly absorbable formula ensures better utilisation by the body without causing digestive discomfort.
120 VEGAN CAPSULES – 1-MONTH SUPPLY – Each bottle contains a long-lasting supply, providing exceptional value with a clean, plant-based formula.
PURE FORMULA – NO FILLERS OR BULKERS – Free from artificial additives, preservatives, GMOs, gluten, and dairy, ensuring a clean, high-quality supplement.
3RD PARTY LAB TESTED FOR QUALITY & SAFETY – Rigorously tested for purity and potency, manufactured in a GMP-certified facility for guaranteed excellence.

Vinco Magtein® Magnesium L-Threonate Supplement - 120 High Strength Magnesium L Threonate Capsules - 2000mg Bioavailable Form of Magnesium per Serving - Non-GMO & Gluten Free – Made in The UK

22% OffFree Shipping

Why We Love It

Enhanced absorption for effectiveness.
Supports sleep quality improvement.
Manufactured with premium ingredients.

Main Highlights

BRAIN-OPTIMIZED MAGNESIUM FORMULA - The ideal supplement to enhance your daily wellness. Magtein Magnesium L-Threonate effectively delivers this essential mineral where it matters most - your brain - supporting cognitive function and overall mental clarity.
EXCEPTIONAL ABSORPTION - Unlike standard magnesium supplements that struggle to cross the blood-brain barrier, our Magtein Magnesium Threonate formula offer optimal bioavailability to go to work fast. This clinically studied form is the only magnesium supplement proven to significantly raise brain magnesium levels.
GENTLE ON YOUR SYSTEM - Formulated to avoid the digestive discomfort commonly associated with typical magnesium supplements. Our carefully crafted capsules provide all the benefits of magnesium without the laxative effect.
AUTHENTIC PATENTED FORMULA - We use only genuine Magtein Magnesium L-Threonate backed by a verifiable Trademark License Agreement. Unlike competitors who may claim similar ingredients, our supplement contains the authentic, patented compound developed through extensive research.
EXPERT-ENDORSED SLEEP SUPPORT - Recommended by leading neuroscientists including Dr. Andrew Huberman as part of the renowned "Sleep Cocktail" alongside Apigenin and L-Theanine. This powerful combination works synergistically to help you fall asleep faster and enjoy deeper, more restorative rest throughout the night.
MANUFACTURED IN GREAT BRITAIN – Our Mag L Threonate supplements are produced in Britain, adhering to GMP standards and utilising premium quality ingredients. Each batch undergoes third-party laboratory testing in the UK, ensuring compliance with UK and EU market standards.

8.7

Excellent

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We scanned 822 products

We reviewed these offers relevant to the Magnesium L Threonate within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Dr. Mercola, Double Wood Supplements, Time Health, swiss bioenergetics, Vinco Supplements, vitabay, The Supplement Stack, ECO-VITS, Hepatica, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Magnesium L Threonate in the market, we considered we took a deep dive into 4111 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Magnesium L-Threonate (90 per Bottle): 30 Day Supply - Dr Mercola. We love many things about this product by Dr. Mercola. What sets it apart from the competition is Patented formula in fewer capsules, Includes eco-friendly packaging, Prevents possible Magnesium deficiency.
The best value product for most shoppers and where user satisfaction is continuously the highest is Double Wood Magnesium L Threonate Supplement | 100 Capsules (25 Servings) High Strength Magnesium L Threonate (4 per Serving) 2000mg by Double Wood Supplements based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Magnesium L Threonate and the best cost-to-value ratio is Vinco Magtein® Magnesium L-Threonate Supplement - 120 High Strength Magnesium L Threonate Capsules - 2000mg Bioavailable Form of Magnesium per Serving - Non-GMO & Gluten Free – Made in The UKat Vinco Supplements with a 22% discount.
Our list of the best Magnesium L Threonate is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Magnesium L Threonate in The UK

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We scanned 822 products

We concluded that: