---
product_id: 7194708
title: "Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules"
brand: "source naturals"
price: "41251CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Source Naturals"
url: https://www.desertcart.sn/products/7194708-source-naturals-magtein-magnesium-l-threonate-667mg-supports-focus-mood
store_origin: SN
region: Senegal
---

# Supports memory & cognitive longevity 667mg Magnesium L-Threonate for brain boost Made in USA, cGMP & FDA compliant Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules

**Brand:** source naturals
**Price:** 41251CFA
**Availability:** ✅ In Stock

## Summary

> 🧩 Elevate your brain game — because your mind deserves the premium edge.

## Quick Answers

- **What is this?** Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules by source naturals
- **How much does it cost?** 41251CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/7194708-source-naturals-magtein-magnesium-l-threonate-667mg-supports-focus-mood)

## Best For

- source naturals enthusiasts

## Why This Product

- Trusted source naturals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stress-Resilient Mindset:** Boosts mood and energy while promoting restful, restorative sleep.
- • **Clean, Pure & Transparent:** Soy, dairy, egg, preservative, and yeast free; crafted under strict US manufacturing standards.
- • **Trusted Legacy Since 1982:** Over 40 years of science-driven wellness from Source Naturals.
- • **Exclusive Magnesium L-Threonate:** Unique synthesized form not found in food, optimized for brain absorption.
- • **Unlock Peak Cognitive Performance:** Clinically-backed 667mg dose enhances focus, memory, and executive function.

## Overview

Source Naturals Magtein Magnesium L-Threonate delivers a potent 667mg dose of a unique, brain-optimized magnesium form designed to enhance memory, focus, mood, and sleep quality. Manufactured in the USA under FDA cGMP standards, this supplement supports cognitive resilience and mental clarity, backed by over 40 years of trusted health innovation.

## Description

Buy Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: I began to feel this comforting sense of peace and joy. Since I have some genetic issues with absorbing ... - I have been taking Magtein for several months. After just a few days, I began to feel this comforting sense of peace and joy. Since I have some genetic issues with absorbing folate, I have been taking numerous supplements for years to treat a number of conditions. Hence, I am already on some of the vitamins and minerals that should be taken with Magnesium. Especially, B6 and D3. Off and on over the years I would take Magnesium to treat restless legs, but it was only sporadic and not l-threonate. Knowing there is a strong family history of dementia, I decided to switch to Magtein in the hopes that it might delay the onset of Alzheimer's. Not for one minute do I believe this will be a miracle cure, but it might be part of a larger arsenal of preventative measures. Regardless, this is now one of the top 5 things I have discovered to improve my daily life with lessened anxiety and heightened clarity of thought and deeper sleep. I recommended this to my adult son and he promptly hijacked my bottle for himself! I am making him pay me back. He has suffered from anxiety for over a decade and cannot tolerate the side effects of numerous anti-anxiety prescriptions. After taking this, he reports his anxiety has lessened a great deal and that his wife is grateful. He also reports that he had been experiencing brain fog and had begun slurring some of his words. Those two things are now better. This is the first medication/supplement he has tried that he has wanted to keep taking other than a multivitamin. We are waiting to see how this affects my mother who is in the middle stages of Alzheimer's. I am hopeful that it will also ease her anxiety and I don't have any unrealistic expectations that it will treat her dementia. But, if it does . . . wouldn't that be great! Alas, anything that will help keep her calm is a good thing. She has had very bad reactions to prescriptions in the past and refuses anything "for her brain." We can open the capsule and mix the powder into her food if she refuses it in pill form. We have only been using this for a week and just one a day, so too early to report.
Review: Some nice surprises, great product - So, you try a supplement which is supposed to help your brain and your memory, but you know in the back of your mind that it won’t. But guess what? This one did! I started remembering things I forgot that I knew. Even little details! I was taking it for about three months when it dawned on me that I was having this memory recall. Definitely worth buying. As an added bonus, it helps keep your digestion regular because it’s magnesium.

## Features

- MAGTEIN BENEFITS. Known to increase resilience to stress, lift mood, raise your energy levels, improve concentration and focus and reformation of sleep quality.
- BENEFITS COGNITIVE ABILITY. There are 4 aspects of cognitive ability that they were positively effected by taking Magtein, episodic memory, working memory, executive function, and attention.
- EXCELLENT SOURCE OF MAGNESIUM L THREONATE. There are countless ways to get other forms of magnesium naturally in your diet, but food sources of magnesium L threonate do not exist because it’s a synthesized form.
- OVER 40 YEARS OF TRUST. source naturals was created in 1982 by ceo ira goldberg to support everyone’s potential to enjoy optimal health.
- MANUFACTURED IN THE USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration. (FDA)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00B7ZNR52 |
| Age Range Description | 35 years |
| Allergen Information | Soy Free |
| Best Sellers Rank | #26,251 in Health & Household ( See Top 100 in Health & Household ) #520 in Magnesium Mineral Supplements #1,883 in Sales & Deals |
| Brand | Source Naturals |
| Brand Name | Source Naturals |
| Concentration | 667 Mg |
| Customer Reviews | 4.6 out of 5 stars 1,906 Reviews |
| Flavor | Unflavored |
| Item Form | Capsule |
| Item Nype Name | Magnesium |
| Item Weight | 0.1 Pounds |
| Manufacturer | Source Naturals |
| Manufacturer Part Number | SN2485 |
| Material Type Free | Dairy Free, Egg Free, Preservative Free, Yeast Free |
| Model Number | SN2485 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Product Benefits | Brain Health |
| UPC | 021078024859 |
| Unit Count | 90.0 Count |

## Product Details

- **Brand:** Source Naturals
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Magnesium
- **Unit Count:** 90.0 Count

## Images

![Source Naturals Magtein Magnesium L-Threonate 667mg Supports Focus, Mood, Healthy Memory, Cognitive Function, Sleep* - 90 Capsules - Image 1](https://m.media-amazon.com/images/I/71CWSQLqM1L.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I began to feel this comforting sense of peace and joy. Since I have some genetic issues with absorbing ...
*by T***N on October 13, 2015*

I have been taking Magtein for several months. After just a few days, I began to feel this comforting sense of peace and joy. Since I have some genetic issues with absorbing folate, I have been taking numerous supplements for years to treat a number of conditions. Hence, I am already on some of the vitamins and minerals that should be taken with Magnesium. Especially, B6 and D3. Off and on over the years I would take Magnesium to treat restless legs, but it was only sporadic and not l-threonate. Knowing there is a strong family history of dementia, I decided to switch to Magtein in the hopes that it might delay the onset of Alzheimer's. Not for one minute do I believe this will be a miracle cure, but it might be part of a larger arsenal of preventative measures. Regardless, this is now one of the top 5 things I have discovered to improve my daily life with lessened anxiety and heightened clarity of thought and deeper sleep. I recommended this to my adult son and he promptly hijacked my bottle for himself! I am making him pay me back. He has suffered from anxiety for over a decade and cannot tolerate the side effects of numerous anti-anxiety prescriptions. After taking this, he reports his anxiety has lessened a great deal and that his wife is grateful. He also reports that he had been experiencing brain fog and had begun slurring some of his words. Those two things are now better. This is the first medication/supplement he has tried that he has wanted to keep taking other than a multivitamin. We are waiting to see how this affects my mother who is in the middle stages of Alzheimer's. I am hopeful that it will also ease her anxiety and I don't have any unrealistic expectations that it will treat her dementia. But, if it does . . . wouldn't that be great! Alas, anything that will help keep her calm is a good thing. She has had very bad reactions to prescriptions in the past and refuses anything "for her brain." We can open the capsule and mix the powder into her food if she refuses it in pill form. We have only been using this for a week and just one a day, so too early to report.

### ⭐⭐⭐⭐⭐ Some nice surprises, great product
*by K***E on October 21, 2024*

So, you try a supplement which is supposed to help your brain and your memory, but you know in the back of your mind that it won’t. But guess what? This one did! I started remembering things I forgot that I knew. Even little details! I was taking it for about three months when it dawned on me that I was having this memory recall. Definitely worth buying. As an added bonus, it helps keep your digestion regular because it’s magnesium.

### ⭐⭐⭐⭐⭐ Passes the blood/brain barrier
*by J***G on August 11, 2025*

This is an excellent product. It passes the blood/brain barrier. Helps generally and in preventing headaches.

## Frequently Bought Together

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-07*