---
product_id: 451295590
title: "Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings"
brand: "momentous"
price: "€ 80.65"
currency: EUR
in_stock: true
reviews_count: 11
category: "Momentous"
url: https://www.desertcart.sk/products/451295590-magtein-magnesium-l-threonate-brain-and-rest-support-supplement-boosts
store_origin: SK
region: Slovakia
---

# NSF Certified for Sport, trusted by athletes Supports quality rest & sleep recovery 145 mg brain-penetrating magnesium L-threonate Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings

**Brand:** momentous
**Price:** € 80.65
**Availability:** ✅ In Stock

## Summary

> 🧠 Elevate your mind and rest like a champion—because your brain deserves the best!

## Quick Answers

- **What is this?** Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings by momentous
- **How much does it cost?** € 80.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/451295590-magtein-magnesium-l-threonate-brain-and-rest-support-supplement-boosts)

## Best For

- momentous enthusiasts

## Why This Product

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

## Key Features

- • **Sleep Like a Pro:** Enhance deep, restorative sleep for next-day mental clarity.
- • **Science-Backed Dosage:** 3 capsules before bed for maximum brain & body benefits.
- • **Athlete-Approved Purity:** NSF Certified for Sport ensures clean, safe supplementation.
- • **Total Brain & Body Support:** Supports nerve signaling, muscle function, and energy production.
- • **Unlock Peak Cognitive Power:** Boost memory, focus, and learning with brain-optimized magnesium.

## Overview

Momentous Magtein Magnesium L-Threonate delivers 145 mg of a unique magnesium form clinically shown to cross the blood-brain barrier, enhancing cognitive function and sleep quality. NSF Certified for Sport, this supplement supports memory, focus, nerve signaling, muscle function, and restful recovery with a precise, research-backed dosage of 3 capsules nightly. Trusted by professionals and athletes alike, it’s designed to optimize brain health and daily performance.

## Description

Buy Momentous Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Works for me! - I've been battling sleep disruption for years due to perimenopause. I heard about this product on a Stacy Sims' podcast. This is the best OTC product I've ever taken for sleep. I take diphenhydramine hydrachloride (brand names are Simply Sleep & Benadryl - it's a sedating antihistamine) when I travel because it's cheap and easy to find, but prefer natural methods when I'm at home. This is mineral based, and I get good and sleepy within an hour and doze blissfully at night. I like the clean ingredients, and yes it's pricey, but worth it for a good night's sleep with no morning brain fog!
Review: Quality product - This has helped with sleep.

## Features

- Elevates Cognitive Function - Harness the power of magnesium L-threonate to help increase magnesium levels in the brain, which may promote overall brain health. Our powerful formula supports cognitive function including memory, learning, attention, & focus.
- Promotes Quality Rest - Unlock the unique capability of Magtein magnesium L-threonate, the only form of magnesium demonstrated to penetrate the blood-brain barrier. By increasing blood flow to the brain, it supports quality rest for optimal recovery during sleep.
- Enhances Function - Momentous magnesium L-threonate supplements help to facilitate muscle contraction, regulate blood pressure, & synthesize DNA & proteins. They also aid in the transmission of nerve signals, regulate neurotransmitter levels, & fuel energy production in brain cells.
- Optimal Dosage, Optimal Results - In order to harness the full benefits of our magnesium L-threonate supplement, take 3 capsules 30-60 minutes before bedtime to promote restful sleep & energize the next day’s daily demands & activities.
- Certified for Athletes - Providing products that give you peace of mind knowing that you’re making smart choices. High quality, research-backed ingredients, chosen by our world-class product engineers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WWK4R2C |
| Age Range Description | Adult |
| Best Sellers Rank | #4,840 in Health & Household ( See Top 100 in Health & Household ) #110 in Magnesium Mineral Supplements |
| Brand | Momentous |
| Brand Name | Momentous |
| Customer Reviews | 4.6 out of 5 stars 714 Reviews |
| Flavor | Unflavored |
| Global Trade Identification Number | 00850030796042 |
| Item Form | Capsule |
| Manufacturer | Momentous |
| Manufacturer Part Number | 7015 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| UPC | 850030796042 |
| Unit Count | 30.0 Count |

## Product Details

- **Brand:** Momentous
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Magnesium
- **Unit Count:** 30.0 Count

## Images

![Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings - Image 1](https://m.media-amazon.com/images/I/711HhZ3O6uL.jpg)

## Questions & Answers

**Q: Can Magnesium L-Threonate help with sleep?**
A: Yes, Magnesium L-Threonate can support healthy sleep patterns. It promotes relaxation and helps regulate neurotransmitters, which can improve sleep quality and duration.

**Q: When is the best time to take Magnesium L-Threonate for sleep?**
A: It is generally recommended to take Magnesium L-Threonate in the evening 30-60 minutes before bed. This allows the supplement to promote relaxation and support a restful night's sleep.

**Q: How long does it take for Magnesium L-Threonate to improve sleep quality?**
A: The time it takes to notice improvements in sleep quality can vary. Some may experience benefits within a few weeks of consistent use, while others may require more time. It is important to be patient and allow it to build up in your system.

**Q: Are there any side effects of taking Magnesium L-Threonate for sleep?**
A: Magnesium L-Threonate is generally well tolerated. However, high doses may cause digestive discomfort, such as diarrhea or stomach cramps. It is recommended to start with the recommended dosage and adjust as needed based on individual tolerance.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works for me!
*by T***M on May 12, 2026*

I've been battling sleep disruption for years due to perimenopause. I heard about this product on a Stacy Sims' podcast. This is the best OTC product I've ever taken for sleep. I take diphenhydramine hydrachloride (brand names are Simply Sleep & Benadryl - it's a sedating antihistamine) when I travel because it's cheap and easy to find, but prefer natural methods when I'm at home. This is mineral based, and I get good and sleepy within an hour and doze blissfully at night. I like the clean ingredients, and yes it's pricey, but worth it for a good night's sleep with no morning brain fog!

### ⭐⭐⭐⭐⭐ Quality product
*by D***E on June 18, 2026*

This has helped with sleep.

### ⭐⭐⭐⭐⭐ Lab tested from a reputable source.
*by A***R on May 12, 2026*

I use this as a sleep aid. I take two (210lb male) and have no trouble falling asleep within minutes. That is less than the 3 suggested. Take with plenty of water. Pills can be a bit tough to swallow with a dry throat. Lab tested from a reputable source

## Frequently Bought Together

- Momentous Magtein Magnesium L-Threonate 145mg - Magnesium Threonate Supplement for Cognitive Function & Rest Support, 30 Servings (Package May Vary)
- Momentous Omega 3 Fish Oil 1600mg - Daily Fish Oil Omega 3 Supplement for Women and Men with EPA & DHA - Supports Joint Health - NSF Certified, GMO-Free, Gluten Free, 30 Servings
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---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-27*