•  

    FUEL CLARITY, ENHANCE MEMORY, AND WIND DOWN WITH BETTER SLEEP.

    Sleep & Cognitive Support

FUEL CLARITY, ENHANCE MEMORY, AND WIND DOWN WITH BETTER SLEEP

Sleep & Cognitive Support

SHOP NOW

Magtein Magnesium L- Threonate For Brain Bioavailability

Magnesium L-Threonate penetrates the blood-brain barrierat higher levels than other formsof magnesium, making it the most bioavailable magnesium for the brain. Magtein is a patented formof Magnesium L-Threonate used in clinical studies.

Benefits Of The Product

Magnesium L-Threonate is designed to support brain health, cognitive performance, and restorative sleep by increasing magnesium levels in the brain.

Supports Deep, Restorative Sleep

Helps promote calm nervous system activity and healthy sleep quality without sedation.

Supports Focus and Cognitive Performance

Helps support attention, mental clarity, and overall cognitive function.

Supports Memory and Learning

Magnesium plays an important role in synaptic plasticity, which supports memory formation and learning.

Supports Nervous System Health

Magnesium helps regulate neurotransmitter activity and supports healthy brain signaling.

  • Supports Memory & Focus

  • Enhances Cognitive Health

  • Improves Sleep Quality

    How To Use

    Take 3 capsules daily, approximately 30–60 minutes before bed. Magnesium L-Threonate is best used as part of a consistent nightly routine to support relaxation and healthy sleep quality.

    • Serving Size: 3 capsules
    • Timing: 30–60 minutes before sleep
    • Routine: Take consistently each evening for best results

    Magnesium levels in the brain increase gradually with regular use. Consistent supplementation helps support cognitive function, relaxation, and restorative sleep over time.

    Magnesium Designed To Reach The Brain

    Formulated with Magtein, a clinically studied form of magnesium L-threonate shown to increase magnesium levels in the brain. Designed to support cognitive function, relaxation, and deep, restorative sleep.

    SHOP NOW
    • Dr. Stacy Sims

      Dr. Stacy Sims, top female physiology expert, empowers women to understand their bodies, embrace their unique physiology, and foster positive female athletic experiences.


    • Dr. Darshan Shah

      Dr. Darshan Shah, board-certified surgeon, longevity specialist and founder of Next Health, trained at Mayo Clinic and Harvard, earned his MD at 21. He trusts Momentous for its precise, science-backed wellness.

    • Dr. Andy Galpin

      Dr. Andy Galpin, top scientist, coach and educator, heads Parker University’s Human Performance Center. He delivers science-backed health, performance and nutrition education to optimize human wellness.

    • Annie Thorisdottir

      Two-time CrossFit Games champion Annie Thorisdottir is a CrossFit legend. A 10-time Games competitor, she claimed back-to-back titles and took third place in 2021 just one year after welcoming her daughter.

      Onset Time & Expected Results

      Onset Time

      Some individuals may notice improvements in sleep quality within about 7 days. For many, benefits continue to build with consistent use, with optimal effects typically experienced after about 4 weeks.

      Expected Results

      With regular supplementation, Magnesium L-Threonate may support deeper, more restorative sleep, along with improvements in focus, memory, and overall cognitive function. Individual results may vary.

      Magnesium L-Threonate Ingredients

      Magnesium 145mg (from 2g Magtein Magnesium L-threonate)
      Other Ingredients: Rice Flour, Hypromellose (Capsule), Magnesium Stearate, and Silica.

      This formula uses Magtein, the patented and clinically studied form of Magnesium L-Threonate shown to elevate brain magnesium levels. Increased brain magnesium supports key neurological processes involved in memory formation, learning, relaxation, and healthy sleep regulation.

      Customer Reviews

      FAQs

      What is Magnesium L-Threonate?

      Magnesium L-Threonate is a specialized form of magnesium (featuring the patented ingredient Magtein) designed to effectively cross the blood-brain barrier. It helps increase magnesium levels in the brain, supporting cognitive function, relaxation, and sleep quality.

      How is it different from other forms of magnesium (like citrate or glycinate)?

      Unlike traditional magnesium forms that mainly support muscles and digestion, Magnesium L-Threonate is specifically formulated to support the brain and nervous system, including:

      • Memory and learning
      • Focus and attention
      • Mental relaxation and stress regulation

      What are the main benefits of this product?

      This supplement is designed to support:

      • Cognitive function and memory
      • Deeper, more restorative sleep
      • Nervous system relaxation and calm
      • Focus and mental clarity

      When is the best time to take it?

      It is generally recommended to take it 30–60 minutes before bedtime to support relaxation and nighttime recovery.

      What is the recommended dosage?

      The typical serving is:

      • 3 capsules per day
      • Best taken consistently in the evening as part of a nightly routine