SKU: 20206931077

Momentous - Magtein Sleep and Cognitive

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Description

Momentous - Magtein Sleep and CognitiveMomentous Magnesium L Threonate delivers 2g of Magtein magnesium L threonate per serving a clinically studied form of magnesium specifically designed to cross the blood brain barrier and support cognitive performance, sleep quality, relaxation, and recovery. NSF Certified for Sport, vegan, gluten free, and formulated to the rigorous purity standards trusted by elite athletes and high performers. For individuals looking to support deeper recovery,

Momentous Magnesium L-Threonate delivers 2g of Magtein® magnesium L-threonate per serving — a clinically studied form of magnesium specifically designed to cross the blood-brain barrier and support cognitive performance, sleep quality, relaxation, and recovery. NSF Certified for Sport®, vegan, gluten-free, and formulated to the rigorous purity standards trusted by elite athletes and high performers.

For individuals looking to support deeper recovery, mental clarity, restorative sleep, and long-term brain health with a highly specialized form of magnesium designed for the central nervous system.

Magtein® — Brain-Targeted Magnesium Support
Not all forms of magnesium function the same way in the body. While many magnesium supplements primarily support digestion, muscular function, or general magnesium intake, Magtein® magnesium L-threonate was specifically developed to increase magnesium levels within the brain.

Research suggests magnesium L-threonate is uniquely capable of crossing the blood-brain barrier more effectively than traditional magnesium forms, helping support cognitive performance, neural signaling, and sleep-related recovery processes.

Momentous uses branded Magtein® magnesium L-threonate exclusively, delivering a clinically studied dose designed to support both mental and physical recovery.

As one verified customer shared:

“For doing demanding physical and mental work, the depth of recovery makes an impact.”

What Magnesium L-Threonate Does

Cognitive Function, Memory & Focus
Magnesium plays a central role in neuronal signaling, synaptic plasticity, and communication within the brain. Research on magnesium L-threonate suggests it may support working memory, learning capacity, focus, and overall cognitive performance by helping maintain healthy magnesium concentrations in neural tissue.

This makes it particularly valuable for individuals under high cognitive load, stress, or demanding work and training schedules.

Restorative Sleep & Recovery
Magnesium helps regulate the nervous system and supports relaxation pathways involved in sleep onset and recovery quality. Magnesium L-threonate is commonly used to support deeper, more restorative sleep without relying on sedative compounds.

Quality sleep directly impacts physical recovery, cognitive performance, mood regulation, and overall resilience.

Stress Management & Nervous System Support
Magnesium is involved in hundreds of enzymatic reactions throughout the body and plays a critical role in regulating the stress response and nervous system balance.

Supporting adequate magnesium levels may help promote calmness, relaxation, and improved recovery from both physical and mental stressors.

Supplement Facts
Serving Size: 3 Capsules | Servings Per Container: 30

Magnesium — 145mg (35% Daily Value)
(from 2g Magtein® Magnesium L-Threonate)

Other Ingredients:
Rice Flour, Hypromellose, Magnesium Stearate, Silica

NSF Certified for Sport®
Gluten-Free, GMO-Free, Vegan

How to Use
Take 3 capsules daily, preferably in the evening or before bed

Can be taken with or without food

Consistent daily use is recommended for best results, as magnesium status and neurological benefits build over time

Some individuals prefer splitting the serving between afternoon and evening to support relaxation and sleep quality

Who May Benefit Most?
Individuals seeking deeper recovery and improved sleep quality

Athletes balancing high physical and cognitive demands

Professionals, students, and high performers under elevated stress

Those looking to support focus, memory, and cognitive performance

Individuals with low dietary magnesium intake

Warnings
Consult a healthcare provider before use if you have a medical condition, are pregnant or nursing, or take prescription medication. Keep out of reach of children.

Do not exceed recommended serving size unless directed by a healthcare professional.

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.

Stack With
Momentous Creatine Monohydrate — Supports muscular ATP production and physical performance while magnesium L-threonate supports neurological recovery and cognitive resilience.

Momentous Omega-3 — Combines brain health, cognitive support, and recovery-focused nutritional support.

Momentous Zinc — Supports nervous system function, recovery, and hormonal balance alongside magnesium’s role in relaxation and sleep quality.

Shipping Notes
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Exchange/Return Notes
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SKU: 20206931077

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4.8 ★★★★★
Based on 6 reviews
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Product Reviews
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Verified Purchase
Garfield S
Battle Creek, US
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
R
Rob75432
Omaha, US
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification. Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2025
E
Verified Purchase
Eliot
West Palm Beach, US
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
D
Verified Purchase
Dr. DeeJaye
Alexandria, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
C
Chloe
Bozeman, US
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through). There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026

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