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Source Naturals

Magtein

Item | SN546

$29.39
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Supplement Facts

Serving Size 3 Capsules

Servings Per Container 30

  Amount Per Serving % Daily Value
Calories 10  
Magnesium (as magnesium L-threonate) 144 mg 36%
Magtein™ (magnesium L-threonate) 2 g

†Daily value not established.

Other ingredients: gelatin (capsule), maltodextrin, silica, and magnesium stearate.

Suggested Use: 3 capsules daily, preferably 2 capsules during the day and 1 capsule 1-2 hours before bed. Start with 1 capsule daily and gradually increase to 3 capsules daily.

NOTE: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

STORE IN A COOL, DRY PLACE.

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

  • Contains no yeast, dairy, egg, gluten, soy or wheat.
  • Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Magtein™ is a trademark of Magceutics, Inc.

  • Magnesium L-Threonate



  • Supports learning and memory



  • Gluten-free; contains no preservatives or artificial colors


Magtein from Source Naturals is now available in a larger 90-capsule bottle! Magnesium plays an essential role in supporting brain function and health, and Magtein (magnesium L-threonate) delivers it effectively and efficiently. Preliminary research suggests that Magtein may provide more magnesium to the brain than other forms of magnesium. In preclinical studies, Magtein was shown to support healthy memory and learning, as well as healthy brain synapse density in regions of the brain associated with memory.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.

Terms and Ingredient Definitions

Shipping Weight: .25 lbs

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

MSRP: $35.75

For our website and catalog, the MSRP is the "Manufacturer's Suggested Retail Price." The MSRP is understood to mean the price at which a manufacturer will recommend a retailer sell a product for in stores, on the internet, or in catalogs. The MSRP of National brand items are dictated to Swanson by each manufacturer. For Swanson brand items, the MSRP is calculated based on a varying percentage above the product's base price.

Rated 5 out of 5 by from The Best This brand is really great. If it works, I see no reason to change.
Date published: 2018-07-02
Rated 4 out of 5 by from Good stuff I never realized the importance of magnesium and the different types. This product took away my daily "fog" and I can mentally function better throughout the day. Also not having as many leg cramps.
Date published: 2015-10-06
Rated 5 out of 5 by from Mag is so good for so many things Our diets are deficient in this valuable mineral and we need supplementation in order to get enough. This particular one is formulated to help you think better. I feel more focused and less confused when I take it. Frequently Swanson's offers special discounts and that is when I stock up on this pricy, to me, fixed income and all that, product. Price or no, I would not want to be without it.
Date published: 2015-02-09
Rated 5 out of 5 by from Very Good Supplement I take two each morning and one each evening. This form of magnesium is thought to be able to penetrate the blood-brain barrier to nourish my brain to help it stay soft and functional. I have been using it for at least a year and I believe it has been beneficial for my cognition. I wish it was less expensive, but the good stuff is usually expensive.
Date published: 2015-02-07
Rated 2 out of 5 by from Hoped for More I didn't notice anything other than magnesium's normal effects. I am going to try Swanson's brand of this and see how I feel with that. At least they use veggie caps instead of the gelatin caps on this product.
Date published: 2014-07-20
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Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Nearly 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For nearly 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.

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