Momentous Magnesium L-Threonate Supplement
Momentous Magnesium L-Threonate Supplement
Momentous Magnesium L-Threonate Supplement

Momentous

Momentous Magnesium L-Threonate Supplement

Momentous Magnesium L-Threonate Supplement

$ 4995
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Momentous Magtein® is a patented form of magnesium L-yhreonate designed for superior absorption into the brain. L-threonate serves as a carrier, helping magnesium cross the blood-brain barrier for improved absorption. 

Boosting magnesium levels helps improve cognitive function and supports more than 600 enzymatic reactions, including those that trigger a calming effect on the nervous system and others that play a role in the body’s stress response and relaxation mechanisms.

Taken consistently, Magtein® may enhance sleep quality when used before bed, and improve focus and mental clarity when used during the day.

Product Specs

  • Count: 90 capsules
  • Serving size: 3 capsules
  • Magnesium content: 2,000 mg magnesium L-threonate (~145 mg elemental magnesium)
  • Other ingredients: rice flour, hypromellose (capsule), magnesium stearate, and silica

Key Benefits

  • Calms brain and nervous system activity, leading to less stress and increased feelings of relaxation
  • Crosses the blood-brain barrier more effectively than other versions of magnesium to deliver a more concentrated dose of magnesium where it can help enhance memory, learning, and focus
  • Improves mental clarity during the day and reduces tension at night for more restful sleep.

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Who It’s Best For

  • People looking to support memory, focus, and cognitive performance
  • Those who struggle to meet recommended daily magnesium needs through foods
  • People who are sensitive to magnesium supplements and capsule ingredients and want a clean, easy-to-digest compound

Who It’s Not Ideal For

  • Individuals with kidney disease or impaired kidney function
  • Anyone taking multiple supplements, such as high-dose multivitamins with extra magnesium
  • People with rice allergies

How It Works

When taken orally, magnesium L-threonate is absorbed by the digestive system and delivers magnesium to the bloodstream as a bioavailable, fast-working compound. The L-threonate acts as a carrier, helping magnesium cross the blood-brain barrier for more targeted and improved absorption. This way, magnesium can get to work supporting the processes involved in memory, learning, relaxation, and sleep regulation.

How to Use It

  • For sleep and relaxation, take three capsules 30 to 60 minutes before bed.
  • For better cognitive function, spread the dose throughout the day, taking one capsule with each meal.
  • Magnesium L-threonate does not have to be taken with food unless you have a sensitive stomach.

Get all your questions answered

Magnesium L-Threonate can be taken at different times depending on your wellness goals. For sleep and relaxation, take all three capsules 30 to 60 minutes before bed. If you're using it for cognitive support, consider spreading the dose throughout the day — ideally one capsule with each meal — to promote mental clarity and focus without drowsiness.

Momentous sources its Magnesium L-Threonate from the United States. Domestic sourcing helps ensure consistent quality, purity, and adherence to rigorous manufacturing standards from raw material to final product.

The vegetable-derived cellulose used in Momentous Magnesium L-Threonate comes from plant sources and is used to form the capsule that delivers the active ingredients. While the cellulose is plant-based, it may not be corn-free. If you have a corn allergy or sensitivity, consult with your healthcare provider before use.

Rice flour is used as a natural alternative to magnesium stearate, helping improve capsule consistency and ingredient blending while keeping additive levels low. It’s hypoallergenic, supports clean-label preferences, and ensures quality without synthetic fillers.

Yes, both supplements can be taken together to support different health goals — Magnesium Malate for energy and muscle function and Magnesium L-Threonate for cognitive function and sleep quality. Together, they provide 365 milligrams of magnesium, which falls within general safe intake levels. For personalized guidance, talk to your doctor.

Sleep benefits may become noticeable after a few weeks of consistent use, though individual results vary. Some people feel more rested within days, while others may need several weeks for the supplement to take full effect.

Magnesium L-Threonate is generally well-tolerated. In some cases, higher doses can cause mild digestive issues like bloating, cramping, or diarrhea. Sticking to the recommended dosage and taking it with food can help minimize discomfort.