---
product_id: 7194708
title: "Magtein Magnesium L-Threonate 667mg - 90 Capsules"
brand: "source naturals"
price: "€ 66.55"
currency: EUR
in_stock: true
category: "Source Naturals"
url: https://www.desertcart.hr/products/7194708-magtein-magnesium-l-threonate-667mg-90-capsules
store_origin: HR
region: Croatia
---

# Boosts energy & focus 667mg Magnesium L-Threonate Made in USA, cGMP certified Magtein Magnesium L-Threonate 667mg - 90 Capsules

**Brand:** source naturals
**Price:** € 66.55
**Availability:** ✅ In Stock

## Summary

> 🧠 Unlock your brain’s full potential—because your mind deserves the best.

## Quick Answers

- **What is this?** Magtein Magnesium L-Threonate 667mg - 90 Capsules by source naturals
- **How much does it cost?** € 66.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/7194708-magtein-magnesium-l-threonate-667mg-90-capsules)

## 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

- • **Clean & Safe Formula:** Soy, dairy, egg, preservative, and yeast free—crafted under strict FDA cGMP standards.
- • **Cognitive Powerhouse:** Enhances episodic & working memory, executive function, and attention for peak mental performance.
- • **Trusted Legacy Since 1982:** Over 40 years of proven quality and innovation from Source Naturals.
- • **Pure Magnesium L-Threonate:** Unique synthesized form not found in food, delivering superior brain bioavailability.
- • **Stress Resilience & Mood Lift:** Scientifically shown to increase stress resistance and elevate mood—stay sharp under pressure.

## Overview

Source Naturals Magtein Magnesium L-Threonate 667mg capsules deliver a clinically studied form of magnesium designed to enhance cognitive functions including memory, focus, and executive function. Manufactured in the USA under FDA cGMP guidelines, this clean, allergen-free supplement supports stress resilience, mood, and sleep quality, backed by over 40 years of trusted health innovation.

## Description

Buy Source Naturals, Magtein Magnesium L-Threonate 667mg - 90 Capsules | Helps Support Learning And Memory on desertcart.com ✓ FREE SHIPPING on qualified orders

## 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 |
| ASIN  | B00B7ZNR52 |
| Age Range Description | 35 years |
| Allergen Information | Soy Free |
| Best Sellers Rank | #28,480 in Health & Household ( See Top 100 in Health & Household ) #571 in Magnesium Mineral Supplements #2,020 in Sales & Deals |
| Brand Name | Source Naturals |
| Concentration | 667 Mg |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,877) |
| Date First Available  | January 30, 2013 |
| Flavor | Unflavored |
| Item Form | Capsule |
| Item Nype Name | Magnesium |
| Item Weight | 1.6 ounces |
| Item model number  | SN2485 |
| Manufacturer | Source Naturals |
| 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 |
| Product Dimensions  | 1.3 x 1.3 x 1.6 inches; 1.6 ounces |
| UPC | 021078024859 |
| Unit Count | 90 Count |

## Product Details

- **Brand:** Source Naturals
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Magnesium
- **Unit Count:** 90 Count

## Images

![Magtein Magnesium L-Threonate 667mg - 90 Capsules - Image 1](https://m.media-amazon.com/images/I/71CWSQLqM1L.jpg)

## Available Options

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

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hr/products/7194708-magtein-magnesium-l-threonate-667mg-90-capsules](https://www.desertcart.hr/products/7194708-magtein-magnesium-l-threonate-667mg-90-capsules)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-17*