10 Best magnesium l-threonate (2025)

Magnesium L-threonate is gaining popularity as a top supplement for cognitive health in 2025. This unique form of magnesium is known for its ability to enhance memory and learning by effectively crossing the blood-brain barrier. The 10 best magnesium L-threonate supplements this year offer high bioavailability and optimal dosages, making them ideal for those seeking to improve mental clarity and reduce anxiety. With brands focusing on quality and purity, users can find options that suit their dietary needs, ensuring a boost in both brain function and overall well-being. Consider incorporating one of these top-rated supplements into your routine.

Bestseller No. 1

Magnesium L Threonate Capsules (Magtein) – High Absorption Supplement – Bioavailable Form for Sleep and Cognitive Function Support – 2,000 mg – 100 Capsules

Only Form of Magnesium able to Support Magnesium Levels in the Brain: Magtein Magnesium L-Threonate is a magnesium breakthrough supplement and the only form of magnesium clinically proven to support magnesium levels in the brain
Clinically Studied for Cognitive Health: Multiple clinical studies show Magnesium L Threonate can help support cognitive health
Highly bioavailable form of Magnesium: L Threonate is a mineral chelating agent that is able to greatly enhance the bioavailability of magnesium making it highly absorbable.
Magnesium for Sleep: Magnesium Threonate is commonly taken alongside L-Theanine and Apigenin in a sleep cocktail for nighttime assistance (treonato de magnesio)
Manufactured in the USA from Globally Sourced Ingredients and tested two times for safety and purity: Doublewood High Absorption Mag L Threonate Capsules are Manufactured in the USA from Globally Sourced Ingredients: Purity testing is available upon request

Bestseller No. 2

Life Extension Neuro-mag Magnesium L-threonate, Magtein, Magnesium Supplement, Brain Health, Memory & Attention, Gluten Free, Vegetarian, Non-GMO, 90 Vegetarian Capsules

Memory, focus & cognitive boost - Magnesium is essential for overall brain performance, but not all magnesium supplements are easy to absorb. But magnesium L-threonate is! This highly absorbable form of bioavailable magnesium can cross the blood-brain barrier, supporting brain cell communication and signaling pathways associated with learning, memory and focus.
Maintain ideal magnesium levels - Magnesium does wonders for your brain, but unfortunately, most of us don’t get enough magnesium from our diets. That’s why supplementing with high-absorption magnesium is a great complement to your brain-friendly lifestyle choices!
Keep your brain at its best - Your daily activities demand focus and adequate attention span. Still, over time, the little details can slip your mind and you find yourself looking for sunglasses on your head. Our magnesium L-threonate cognitive supplement helps maintain the crucial connections between your brain cells so your memory stays razor-sharp.
Ingredients matter - Sourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every product we produce.   
Live your healthiest life - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. That’s why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

SaleBestseller No. 3

Magnesium l-Threonate Supplement Capsules 120 Count - 3000mg - High Absorption Magnesium Supplements Liposomal, Ultra Strength Magnesium Threonate for Brain, Sleep Support, Energy, and Heart Health

🧠 𝐁𝐑𝐀𝐈𝐍 𝐇𝐄𝐀𝐋𝐓𝐇: Magnesium l threonate capsules may help to enhance mental performance with increased magnesium levels in the brain, which may support with improved cognitive functions such as memory and learning
💊 𝐂𝐎𝐍𝐕𝐄𝐍𝐈𝐄𝐍𝐓 𝟑𝟎-𝐃𝐀𝐘 𝐒𝐔𝐏𝐏𝐋𝐘: Each bottle contains 120 best magnesium supplement capsules, providing a generous supply for a sustained period, making it convenient for long-term cognitive and overall health support. Convenient to take with other supplements
💪𝐒𝐔𝐏𝐏𝐎𝐑𝐓𝐒 𝐂𝐋𝐄𝐀𝐑 𝐓𝐇𝐈𝐍𝐊𝐈𝐍𝐆: The specific formulation of magnesium threonate supplement may help support clear thinking. By supporting optimal magnesio levels in the brain, it may contribute to mental clarity, cognitive function, and a more focused thought process
🧓 𝐀𝐓𝐓𝐄𝐍𝐓𝐈𝐎𝐍 𝐀𝐍𝐃 𝐅𝐎𝐂𝐔𝐒: These pure magnesium complex supplement may support your overall attention and focus. Treonato de magnesio is known to play a role in neurotransmitter regulation, and its presence in the brain may positively influence attention span and the ability to concentrate on tasks
⚖️ 𝐌𝐎𝐎𝐃 𝐁𝐀𝐋𝐀𝐍𝐂𝐄 𝐀𝐍𝐃 𝐇𝐎𝐑𝐌𝐎𝐍𝐄 𝐒𝐔𝐏𝐏𝐎𝐑𝐓: Magnesium is involved in various biochemical processes, including those related to mood regulation and hormone balance. Magnesium l-threonate capsules may help with mood balance and hormonal support for women, potentially helping you achieve a more stable and positive emotional state

Bestseller No. 4

(120 Capsules), 2,253mg Per Serving, Providing 420mg Elemental Magnesium, L-Threonate, Bisglycinate Chelate, Malate, from Kappa Nutrition.

HIGHLY BIOAVAILABLE FORM OF MAGNESIUM: L-Theonate is a mineral chelating agent that can greatly enhance magnesium's bioavailability, making it highly absorbable; PROMOTES MEMORY AND OVERALL COGNITIVE FUNCTION: Research showed Magnesium L-Threonate promoted recall, age-related memory health, and promoted the creation of new neural pathways
SUPPORTS SLEEP QUALITY: Magnesium is a natural muscle relaxer which can help calm the brain at bedtime; It may help support sleep quality by assisting parasympathetic nervous system activation and melatonin and GABA regulation; ENERGY & MUSCLE SUPPORT: This product is specifically formulated around Malate's energy-supportive properties; Malate is an intermediary of the Krebs cycle, the ATP and energy-producing system in the body
HIGHLY BIOAVAILABLE FORM OF MAGNESIUM: L-Theonate is a mineral chelating agent that is able to greatly enhance the bioavailability of magnesium making it highly absorbable; PROMOTES MEMORY AND OVERALL COGNITIVE FUNCTION: Research showed Magnesium L-Threonate promoted recall, age-related memory health, and promoted the creation of new neural pathways
Healthy energy levels: Magnesium is vital to cellular energy production in the body and enhances physical performance, exercise recovery, and cramp defense so you can get more out of everyday life and exercise; Bone density & strength; Magnesium is an essential vitamin and as vital as calcium when it comes to bone health; Daily magnesium intake is associated with better bone density of the hip and spine

SaleBestseller No. 5

NOW Foods Supplements, Magtein™ with patented form of Magnesium (Mg), Cognitive Support*, 90 Veg Capsules

2 grams of Magnesium L-Threonate for cognitive support*
A patented form of magnesium that readily crosses the blood-brain barrier for utilization in the brain*
Take 3 capsules daily in divided doses (take 1 capsule during the daytime, preferably in mid-afternoon and take 2 capsules one hour before sleep)
Supports brain health and may facilitate learning and memory, as well as a relaxed mood*
Made and quality tested in the USA with globally sourced ingredients*

SaleBestseller No. 6

NOW Foods Supplements Magtein, Magnesium L-Threonate, Cognitive Support*, 180 Veg Capsules

Magnesium (Mg) is an essential mineral best known for its role in bone and nervous system function*
Recent research has demonstrated that it is also critical for normal brain health and normal cognitive function by maintaining the density and stability of neuronal synapses.* However, most forms of Mg are not easily absorbed into the nervous system*
Magtein is a patented form of Mg that readily crosses the blood-brain barrier for utilization in the brain.* Laboratory studies indicate that Magtein supports brain health and may facilitate learning and memory, as well as a relaxed mood*
GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
Packaged in the USA by a family owned and operated company since 1968

SaleBestseller No. 7

Quadruple Magnesium Supplement, 400mg of Chelate Magnesium Glycinate, L-threonate, Citrate & Malate | Max Absorption Complex w/Vitamin D3 & B6, for Sleep Heart Muscles Nerves, Non-GMO, 60 Vegan Caps

QUADRUPLE COMPLEX FOR OVERALL HEALTH - Unlike many supplements that rely on just one type of magnesium or cheap Magnesium Oxide, Dralot Magnesium Complex combines 4 superior forms of magnesium (Magnesium Glycinate, L-Threonate, Citrate, Malate)for comprehensive benefits in a single capsule! No more juggling multiple supplements—You find the all-in-one solution for mood, stress, sleep, brain, nerve, and muscle health!
GENTLE ON THE STOMACH & ULTRA-HIGH ABSORPTION - Feeling discomfort after taking supplements? Tired of taking multiple supplements daily to ensure adequate intake? Dralot combines 4 of the most bioavailability forms of magnesium in a chelated formula, ensuring superior absorption and retention rate while remaining gentle on digestion. You won’t have to worry about inadequate magnesio retention or gastrointestinal upset—Dralot enhances your wellness journey with effective yet gentle supplement!
EXPERTS FORMULA, ADDED VITAMIN D3 & B6 - Crafted with guidance from leading nutritional experts, our formula goes beyond the ordinary by incorporating Vitamin D3 and B6—key ingredients often overlooked in other supplements. Clinical studies confirm that D3 and B6 amplify magnesium utilization, absorption and effectiveness, delivering benefits far greater than just the sum of their parts. Plus, they also support energy production, muscle and bone health. Our passion is creating a healthier life.
PURELY NATURAL, cGMP QUALITY - Dralot meticulously selects only the finest ingredients, ensuring that every capsule contains only the best. The formula is completely vegetarian, free from GMOs, gluten, soy, dairy, and artificial colors, making it suitable for almost anyone. Even the HPMC capsule shell is plant-based, derived from pine trees, not animal gelatin. Each capsule is crafted in a US NSF-registered facility under cGMP compliance, ensuring the highest standards of quality and safety.
RISK-FREE PURCHASE! - Magnesium, the fourth most abundant mineral in the human body, is essential for countless bodily functions. Yet, did you know that around 54% of Americans aren’t getting enough magnesium from their diet alone? Now, two Dralot Magnesium capsules can meet the recommended daily—400mg! We believe in keeping things simple, so if you're not completely satisfied, just reach out to us, and we'll make it right. No hassle, no fuss!

SaleBestseller No. 8

Sports Research Magtein Magnesium L-Threonate Capsules - Magnesium Supplement for Memory, Focus & Cognition - Magnesium L Threonate Supports Brain Health, Sleep & Mood - 2000mg, 90 Capsules for Adults

HIGHLY BIOAVAILABLE FORM: Magnesium L-threonate is the salt formed from mixing magnesium and threonic acid, a water-soluble substance derived from the metabolic breakdown of vitamin C. Easily absorbed, our magnesium L threonate capsules are used for their overall brain health benefits and may help support memory, focus, relaxation, mood, and cognition.
MADE WITH MAGTEIN: Magtein is a patented compound called threonic acid developed by a group of MIT researchers. Magtein is the only form that effectively crosses the blood-brain barrier and increases magnesium levels in the brain, which is critical for improving cognitive function. Our easy-to-swallow Magtein magnesium L-threonate veggie capsules are the easiest, most convenient way to add this essential mineral to your daily diet.
PREMIUM QUALITY: Sports Research takes pride in offering products that use only the best ingredients available so that you can have total peace of mind in the supplements that you are taking. Our magnesium supplement is verified non-GMO and free of gluten and gelatin.
MANUFACTURED IN THE USA: Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins. For us, it's all about quality control - so you can have confidence in your dietary supplements. We offer ninety (90) magnesium pills for a one (1) month supply. Reap all the benefits of this powerful and healthy magnesium threonate supplement!
THE SPORTS RESEARCH DIFFERENCE: Created in 1980, Sports Research is a privately-owned business born from a passion for fitness, wellness, and healing. Our goal is to help people live their best lives through real, research-backed ingredients created for every body — inside and out. We're fully dedicated to sourcing the highest quality products from around the world, backed by third party testing. We all deserve the best in our quest for healthy living. Our mission is to give you just that.

SaleBestseller No. 9

Jarrow Formulas Magnesium L-Threonate, MagMind Brain Supplements for Memory Support, 90 Veggie Capsules, Up to a 30 Day Supply

BRAIN HEALTH SUPPLEMENT: Jarrow Formulas MagMind includes 2g of Magtein (Magnesium L-Threonate) per serving; clinically shown to support aspects of cognition, such as increased alertness, memory^, brain health and a positive mood(1)
CLINICALLY STUDIED MAGTEIN MAGNESIUM L-THREONATE: A highly bioavailable form of magnesium L-Threonate that readily crosses the blood-brain barrier(1)
FITS YOUR LIFE: This dietary supplement is vegan and non-GMO project verified for healthy brain supplements that fit your life; contains up to a 30 day supply
ALLERGY FRIENDLY: Brain supplements for memory and focus contain no wheat, gluten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts or sesame for allergy friendly supplements
SUPERIOR SCIENCE, SMARTER FORMULAS: Informed by strong scientific research, Jarrow Formulas products are carefully crafted to ensure you get the benefit of each and every vitamin, mineral and supplement

SaleBestseller No. 10

Dr. Mercola Magnesium Advanced, 30 Servings (90 Capsules), Dietary Supplement, Magnesium L-Threonate, Non-GMO

Our Magnesium Advanced works as a vital mineral for the mind and body, supporting bone and joint health along with playing a key role in your body's normal detoxification process*
Following Dr. Mercola’s belief in providing the best quality products, this product is specially designed to reduce gastrointestinal discomfort compared to other forms of magnesium
This formula delivers 2000 mg of our patented Magtein Magnesium L-Threonate per serving, with superior absorption so your body can get what it needs*
Our Magnesium Advanced penetrate cell membranes to provide unsurpassed support for healthy brain function, promoting clearer, calmer thinking
Developed with you in mind, Dr. Mercola’s physician formulated products are only made with ingredients that meet our premium quality standards. Established in 1997, we have been a trusted source in natural health for over two decades

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