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Magnesium L-Threonate (Magtein) Supplement

$30.95

Magnesium L-Threonate enhances brain magnesium levels, promoting cognitive health and helping you stay sharp and focused.

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Description

Magnesium is an essential mineral involved in hundreds of processes throughout the body. While there are many forms of magnesium available, Magnesium L-Threonate is unique because it is designed to support brain magnesium levels. This makes it a strong choice for those looking to support cognitive health, focus, and overall brain function.

Each 4-capsule serving provides 2,000 mg of MagteinĀ® Magnesium L-Threonate, yielding 144 mg of elemental magnesium.


Soy-Free, Gluten-Free, Non-GMO

Benefits

  • 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)
  • WE BOTTLE WELLNESS: At Double Wood we provide pure, potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing

Directions & Dosage

Clinical studies of MagteinĀ® used 1.5–2 g per day. Most adults take 4 capsules (2 g) daily, split between morning and 2 hours before bed.

Overall rating: 4.8462625 / 5 from 709 reviews.

AI Generated Review Summary

Magnesium L-Threonate (Magtein) Supplement is highly regarded for its quality, effectiveness, and ability to enhance cognitive health. Customers praise its positive impact on sleep quality, blood pressure, and circulation. The product is also noted for its affordability and fast shipping.

Summary topics

  • Supplement Quality: 6%
  • Magnesium Effectiveness: 8%
  • Sleep Quality: 14%
  • Health Benefits: 4%
  • Value for Money: 9%

Review topics: [ingredients, pain, results, service, quality, improvement, feel, issues, benefits, husband, value, price, package, effects, dose, shipping, energy, stomach, impact, order, difference, work, sleep, magnesium, supplement, wood, side effects, magnesium l-threonate, capsules, clarity].

Review highlights

  • "Great products, outstanding support, excellent customer service, and competitive pricing!"Feisal F.
  • "Very High quality product at affordable price."Anonymous
  • "Best source of magnesium Great company and great price and service"Anonymous

Reviews

Great

"I came across magnesium l-threonate possibly helping with a slew of things and have definitely noticed a difference in my ability to fall/stay asleep due to a busy mind/low-level anxiety as well as charley horse cramps upon waking up/stretching. I take 3 about and hour before going to sleep most nights."

Marissa D. (5/5)

Don’t take these in the morning!

"I accidentally put these in my morning routine supplements and was tired and sleepy. Tv hers are a night time magnesium and definitely help with relaxation and sleep !!"

Kay D. (5/5)

Impressive results!

"I'm very impressed with the results I'm noticing from taking this supplement. Comforting knowing Doublewood is third party tested. I will continue using this proven reliable magnesium product. Thanks!"

David R. (5/5)

Multiple body benefits & noticeable improvement

"I'm delighted that I've been able to regulate my bathroom schedule, sleep deeper at night, and soothe my anxiety-prone brain more easily since starting mag l-threonate about 1 month ago."

Kelly B. (5/5)

Very happy

"This is my favorite magnesium supplement! I am ordering more today"

Deborah F. (5/5)

Magtein for focus and cognitive support

"I only tried for 4 weeks so I didn't really expect I'd notice much. However, I did feel like focus was improved so I have reordered"

Faith M. (5/5)

Great Product

"Great product!! Last July I was struggling to complete sentences; struggling with coming up with words. Ordered the magnesium-L -Threonate and within a few days noticed such a big difference. Still taking it everyday. I feel it is also helping with better sleep. I take 2 first thing in the morning and 2 in the evening an hour or so before bed."

Tammie E. (4/5)

I don’t get enough Magnesium

"I don’t get enough Magnesium in my diet, like most people, so I take it hoping it will help but I can’t really say how much it helps because I don’t feel any different than I did before I started taking it."

Charles S. (3/5)

I’m sleeping better

"I think this is a good product."

Jamie M. (5/5)

Magnesium

"Awesome"

Wesley P. (5/5)

Q&A

Overall rating: 4.8462625 / 5 from 709 reviews.

AI Generated Review Summary

Magnesium L-Threonate (Magtein) Supplement is highly regarded for its quality, effectiveness, and ability to enhance cognitive health. Customers praise its positive impact on sleep quality, blood pressure, and circulation. The product is also noted for its affordability and fast shipping.

Summary topics

  • Supplement Quality: 6%
  • Magnesium Effectiveness: 8%
  • Sleep Quality: 14%
  • Health Benefits: 4%
  • Value for Money: 9%

Review topics: [ingredients, pain, results, service, quality, improvement, feel, issues, benefits, husband, value, price, package, effects, dose, shipping, energy, stomach, impact, order, difference, work, sleep, magnesium, supplement, wood, side effects, magnesium l-threonate, capsules, clarity].

Review highlights

  • "Great products, outstanding support, excellent customer service, and competitive pricing!"Feisal F.
  • "Very High quality product at affordable price."Anonymous
  • "Best source of magnesium Great company and great price and service"Anonymous

Reviews

Great

"I came across magnesium l-threonate possibly helping with a slew of things and have definitely noticed a difference in my ability to fall/stay asleep due to a busy mind/low-level anxiety as well as charley horse cramps upon waking up/stretching. I take 3 about and hour before going to sleep most nights."

Marissa D. (5/5)

Don’t take these in the morning!

"I accidentally put these in my morning routine supplements and was tired and sleepy. Tv hers are a night time magnesium and definitely help with relaxation and sleep !!"

Kay D. (5/5)

Impressive results!

"I'm very impressed with the results I'm noticing from taking this supplement. Comforting knowing Doublewood is third party tested. I will continue using this proven reliable magnesium product. Thanks!"

David R. (5/5)

Multiple body benefits & noticeable improvement

"I'm delighted that I've been able to regulate my bathroom schedule, sleep deeper at night, and soothe my anxiety-prone brain more easily since starting mag l-threonate about 1 month ago."

Kelly B. (5/5)

Very happy

"This is my favorite magnesium supplement! I am ordering more today"

Deborah F. (5/5)

Magtein for focus and cognitive support

"I only tried for 4 weeks so I didn't really expect I'd notice much. However, I did feel like focus was improved so I have reordered"

Faith M. (5/5)

Great Product

"Great product!! Last July I was struggling to complete sentences; struggling with coming up with words. Ordered the magnesium-L -Threonate and within a few days noticed such a big difference. Still taking it everyday. I feel it is also helping with better sleep. I take 2 first thing in the morning and 2 in the evening an hour or so before bed."

Tammie E. (4/5)

I don’t get enough Magnesium

"I don’t get enough Magnesium in my diet, like most people, so I take it hoping it will help but I can’t really say how much it helps because I don’t feel any different than I did before I started taking it."

Charles S. (3/5)

I’m sleeping better

"I think this is a good product."

Jamie M. (5/5)

Magnesium

"Awesome"

Wesley P. (5/5)

Q&A

Identity, potency, and contaminants verified per batch Identity, potency, and contaminants verified per batch
Manufactured in an FDA-registered cGMP facility Manufactured in an FDA-registered cGMP facility
Manufactured in the USA from Gloabally Sourced Materials Manufactured in the USA from Gloabally Sourced Materials

Bebefits

  • Bioavailable Form of Magnesium: L-Threonate is a mineral chelating agent that may allow the elemental magnesium to cross the blood-brain barrier.
  • Supports Overall Brain Health: Research showed Magnesium L-Threonate is able to deliver magnesium to the brain and support overall cognitive function.
  • Promotes Healthy Sleep: Magnesium L-Threonate may support healthy sleep habits.
Bebefits

Magtein (Magnesium L-Threonate)

A patented form of magnesium L-threonate. As a dietary nutrient, it is found in foods and may complement an everyday nutrition routine. It is commonly chosen to studied for supporting cognitive function and brain magnesium levels.

Magtein (Magnesium L-Threonate)

What Customers Are Saying

Reviews

"I take two capsules an hour before bedtime and it helps me fall asleep quickly and stay asleep. I won’t be without it."

Gayle D.

"Love that it crosses the blood brain barrier and is neuro protective and helps me sleep better."

Jennifer R.

"Love this product! My family takes this for relaxation and to ensure good sleep quality. Highly recommend!"

Anna N.

See All Reviews
Reviews
Supplement Facts

Pairs well with

Powerful alone, stronger together. Magnesium L-Threonate (Magtein) Supplement delivers targeted support on its own, but combining it with complementary ingredients can help create a more holistic and balanced approach to wellness.

Frequently Asked Questions

How many mg of elemental magnesium are in Double Wood’s Magnesium L-Threonate?

Each 4-capsule serving of Double Wood Magnesium L-Threonate provides 2,000 mg of MagteinĀ® Magnesium L-Threonate, yielding 144 mg of elemental magnesium. This two-part dose matters because ā€œMagteinĀ®ā€ refers to the full magnesium L-threonate compound, while ā€œelemental magnesiumā€ refers to the actual magnesium content delivered per serving.

How much MagteinĀ® Magnesium L-Threonate should you take?

Clinical studies on MagteinĀ® Magnesium L-Threonate have typically used 1.5–2 g per day, with many adult studies using a 2 g daily dose. Double Wood Magnesium L-Threonate is designed to match that research-backed serving size: each 4-capsule serving provides 2,000 mg of MagteinĀ® Magnesium L-Threonate, yielding 144 mg of elemental magnesium.

For most adults, the suggested serving is 4 capsules daily, often split between morning and evening. Some people prefer starting with 2 capsules for the first week to assess tolerance, then increasing to the full 4-capsule serving. Always follow the label directions and consult your healthcare provider if you are pregnant, nursing, taking medication, or managing a medical condition.

What’s the difference between magnesium L-threonate and MagteinĀ®?

Magnesium L-threonate is a form of magnesium bound to L-threonic acid. MagteinĀ® is the patented, clinically studied form of magnesium L-threonate used in research on brain magnesium levels, cognitive performance, and sleep quality. Double Wood Magnesium L-Threonate is made with MagteinĀ®, not a generic magnesium L-threonate ingredient.

Can you take MagteinĀ® every day long-term?

MagteinĀ® Magnesium L-Threonate is commonly taken daily as part of a long-term cognitive health or sleep-support routine. Clinical studies have evaluated daily use over multiple weeks, including 6- and 12-week study periods. Always follow the label directions, and consult your healthcare provider if you are pregnant, nursing, taking medication, or managing a medical condition.

What should I expect when taking MagteinĀ® Magnesium L-Threonate?

Some people notice changes in relaxation or sleep quality within the first 1–2 weeks of taking MagteinĀ® Magnesium L-Threonate consistently, while cognitive benefits may take longer and were evaluated in studies over 6- and 12-week periods. Some users report vivid dreams or initial drowsiness, especially when taking it at night. If this happens, try taking it earlier in the evening, splitting the serving between morning and night, or starting with 2 capsules before increasing to the full 4-capsule serving. If drowsiness or discomfort continues, stop use and consult your healthcare provider.

Overall rating: 4.8462625 / 5 from 709 reviews.

AI Generated Review Summary

Magnesium L-Threonate (Magtein) Supplement is highly regarded for its quality, effectiveness, and ability to enhance cognitive health. Customers praise its positive impact on sleep quality, blood pressure, and circulation. The product is also noted for its affordability and fast shipping.

Summary topics

  • Supplement Quality: 6%
  • Magnesium Effectiveness: 8%
  • Sleep Quality: 14%
  • Health Benefits: 4%
  • Value for Money: 9%

Review topics: [ingredients, pain, results, service, quality, improvement, feel, issues, benefits, husband, value, price, package, effects, dose, shipping, energy, stomach, impact, order, difference, work, sleep, magnesium, supplement, wood, side effects, magnesium l-threonate, capsules, clarity].

Review highlights

  • "Great products, outstanding support, excellent customer service, and competitive pricing!"Feisal F.
  • "Very High quality product at affordable price."Anonymous
  • "Best source of magnesium Great company and great price and service"Anonymous

Reviews

Great

"I came across magnesium l-threonate possibly helping with a slew of things and have definitely noticed a difference in my ability to fall/stay asleep due to a busy mind/low-level anxiety as well as charley horse cramps upon waking up/stretching. I take 3 about and hour before going to sleep most nights."

Marissa D. (5/5)

Don’t take these in the morning!

"I accidentally put these in my morning routine supplements and was tired and sleepy. Tv hers are a night time magnesium and definitely help with relaxation and sleep !!"

Kay D. (5/5)

Impressive results!

"I'm very impressed with the results I'm noticing from taking this supplement. Comforting knowing Doublewood is third party tested. I will continue using this proven reliable magnesium product. Thanks!"

David R. (5/5)

Multiple body benefits & noticeable improvement

"I'm delighted that I've been able to regulate my bathroom schedule, sleep deeper at night, and soothe my anxiety-prone brain more easily since starting mag l-threonate about 1 month ago."

Kelly B. (5/5)

Very happy

"This is my favorite magnesium supplement! I am ordering more today"

Deborah F. (5/5)

Magtein for focus and cognitive support

"I only tried for 4 weeks so I didn't really expect I'd notice much. However, I did feel like focus was improved so I have reordered"

Faith M. (5/5)

Great Product

"Great product!! Last July I was struggling to complete sentences; struggling with coming up with words. Ordered the magnesium-L -Threonate and within a few days noticed such a big difference. Still taking it everyday. I feel it is also helping with better sleep. I take 2 first thing in the morning and 2 in the evening an hour or so before bed."

Tammie E. (4/5)

I don’t get enough Magnesium

"I don’t get enough Magnesium in my diet, like most people, so I take it hoping it will help but I can’t really say how much it helps because I don’t feel any different than I did before I started taking it."

Charles S. (3/5)

I’m sleeping better

"I think this is a good product."

Jamie M. (5/5)

Magnesium

"Awesome"

Wesley P. (5/5)

Q&A

Magnesium L-Threonate (Magtein) Supplement

From

$30.95

Primary Benefit

Sleep

Other Benefits

Anxiety & Stress, Brain Health

Product Form

Capsule
View product