Jarrow Formulas

Jarrow Formulas Magnesium L-Threonate MagMind Magtein Magnesium Supplement Brain Supplements for Memory Support 90 Veggie Capsules Up to

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About this item

  • Brain Health and Function: Magnesium L Threonate supplement, or Magtein, is a unique form that has been shown to readily cross the blood-brain barrier in pre-clinical studies and support brain health and function in healthy adults(1)
  • MagMind Highlights: Jarrow Formulas MagMind magnesium threonate supplement includes 90 capsules, each serving delivers 2 g of Magtein
  • Convenient Capsules: Improve your daily routine by taking three magnesium l-threonate capsules per day (1 capsule in the morning, 2 capsules one hour before bed) by mouth, with or without meals or as directed by your qualified healthcare professional
  • Superior Nutrition and Formulation: The goal of Jarrow Formulas is to promote optimal health with premium-quality, effective, affordable, and superior formulation of dietary supplements; Health-conscious individuals can be assured of purity and value
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Product details

BrandJarrow Formulas
Item FormCapsule
Primary Supplement TypeMagnesium
Unit Count90.0 Count
FlavorUnflavored

Technical specifications

is_discontinued_by_manufacturerNo
product_dimensions2.5 x 2.5 x 4.25 inches; 7 ounces
item_model_numberMAGT
date_first_availableSeptember 26, 2012
manufacturerJarrow Formulas
best_sellers_rank#3,443 in Health & Household ( See Top 100 in Health & Household ) #80 in Magnesium Mineral Supplements #513 in Sales & Deals

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Customer reviews

4.64,556 ratings

Customers say

Customers report positive effects of this magnesium supplement on sleep quality, cognitive function, and stress relief, noting improved mental clarity and reduced anxiety and hyperactivity.

★★★★★

Jarrow is a trusty brand, Magmind is superior for cognition, spatial relations and SLEEP QUALITY - UPDATED REVIEW

JeriOwlNovember 15, 2012

I have been using Jarrow Formula supplements for a number of years, especially the Vitamin B12 - methylcobalamin and Vitamin K2 - MK7 supplements. I have been impressed with their continuing development of new *effective* products at a great price point. My husband and I have been taking approximately a gram a day of supplement Magnesium (cheaper products) for almost 5 years now. In that time we have cured his former type 2 diabetes (after almost a 2 decade battle with medicated fasting BGs in the 500s at one point!) and we have almost completely reversed his hypertension of many years as well has have turned his end stage Severe Congestive Heart Failure around so he's relatively free of symptoms. I credit not only the magnesium, but also high doses of Vitamin D (ALWAYS taken with magnesium and fish oil!!), a whole foods source multi, the Sinatra Protocols for supplements as found in the back of The Sinatra Solution: Metabolic Cardiology and a number of minerals especially trace minerals as found in Liqumins ConcenTrace Trace Mineral Drops, Low Sodium, 8-Ounce Bottle . I was looking into research on magnesium and the brain when I ran into the MIT study published in 2010 showing magnesium L-threonate is the only form of magnesium to cross the blood-brain barrier and showed observable improvements in cognitive measures. Interesting. So we bought a bottle at our local neighborhood nutrition shop after a discussion with the owner, a couple I have come to trust during our many battles with the medical establishment. Jarrow Formulas of magnesium L-threonate as Magmind is a very cost-effective source. To further economize we are still taking our regular magnesium supplement 3 times a day (750 mg) then taking this form of magnesium as part of our bed time routine (replacing the 4th magnesium of the day). I am genuinely impressed. Our sleep has improved yet another notch, which is saying something since the 5 years of magnesium supplementation meant we already had really good sleep quality. What I have noticed is that after multiple head trauma injuries (including a serious concussion earlier this year) my previously very high level of spatial relations was slipping. Now with Jarrow I feel I'm getting that edge back. I am very impressed. I will update again with further results after we've been taking this formula longer. 2015 UPDATE - in the years since we first tried MagMind I've referred hundreds of people to try this quality supplement with great results. We've since learned to couple magnesium with taurine for even greater results. Taurine is VERY well documented to improve the fluidity of electrolytes within the cells including within the brain. NOVEMBER 2016 UPDATE: Well, here we are 4 years later. We still personally use and recommend MagMind. What we discovered though, since he was put on Armour Thyroid by our primary care he no longer seems to be "leaking" magnesium hence we've cut magnesium supplementation waaayy back. Plus we soak in epsom salts far more. Magnesium is still vital however we're no longer "taking a gram a day." Read more

★★★★★

Sleep…FINALLY!

Joan TabakDecember 29, 2025

After nearing delirium, this finally let me sleep. I am perimenopausal and let me tell you, the choppy sleep and inability to stay asleep hits you like a freight train. I tried 4-5 other basic magnesium supplements with no effect, so started to go down the rabbit hole to understand the differences in types of magnesium. After a deep dive I settled on this supplement and dang. I went from 4-5 hours a night to 7 hours regularly. I’m still pushing for the full 8 but baby steps. Very pleased and will continue to buy. As well, I am not good at swallowing pills, and the size of these scared me a bit. I found that they go down very easily however! Read more

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★★★★★

Exceptional Brain Health Supplement – Highly Recommended!

Kevin GrossAugust 19, 2024

Jarrow Formulas MagMind Brain Health with Magtein** is an outstanding dietary supplement that delivers on its promises. I’m delighted to give it a five-star review for its effectiveness, quality, and support for cognitive health. The use of Magtein (Magnesium L-Threonate) in this supplement is a significant plus. This form of magnesium is known for its superior ability to cross the blood-brain barrier, making it particularly effective for brain health. I’ve noticed a positive impact on my memory and cognitive function since starting this supplement, which is exactly what I was hoping for. The capsules are easy to take and well-tolerated. I appreciate that the supplement comes in a 90-capsule bottle, providing a 30-day supply, which is convenient for consistent use. The quality of the ingredients is evident, and Jarrow Formulas is a reputable brand known for its high standards in supplement manufacturing. The benefits have been noticeable in my daily life. Improved focus and mental clarity are some of the key advantages I’ve experienced. It’s great to have a supplement that supports brain health and memory in such a practical and effective way. Overall, **Jarrow Formulas MagMind Brain Health** is a top-notch supplement that lives up to its claims. It’s a fantastic choice for anyone looking to enhance their cognitive function and memory. I highly recommend it and give it five stars for its quality, effectiveness, and overall contribution to brain health! Read more

★★★★☆

Great magnesium supplement

ReadsalotOctober 15, 2025

This type of magnesium really helps me to focus and feel calm. I have bought this several times now. Jarrow makes quality supplements. Highly recommend. Read more

★★★★★

Helpful

GeoffNovember 26, 2025

Does help with sleep slightly, body seems to get used to it after a few weeks. Just take a break and start again Read more

★★★★★

Brain health

Kathy MartinoNovember 6, 2025

Great product and much cheaper than in stores highly recommend Read more

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