Momentous

Magnesium L-Threonate

$49.95
Tax included. Shipping calculated at checkout.

Magnesium L-Threonate is the only form specifically designed to cross the blood-brain barrier, delivering calming, cognition-supportive benefits where they matter most—your brain. This formula by Momentous features 2 grams of Magtein®, the patented compound shown to increase synaptic density and support neuroplasticity. Translation: better focus, steadier mood, and deeper, higher-quality sleep. If you’re dealing with racing thoughts, mental fatigue, or that wired-but-tired feeling common in perimenopause, this is your nightly go-to.

Why We Like It

As estrogen declines, magnesium depletion can sabotage sleep, memory, and mood. This brain-targeted formula helps restore what your body’s been missing.

Supports memory, learning, and mental clarity

Gently calms the nervous system without sedation

Improves sleep depth and efficiency, not just duration

Ultra-bioavailable and backed by clinical studies

Unlike grocery-store magnesium blends that stay in your gut, this one works where stress, sleep, and cognition collide: your brain.
Risks and Considerations

Best taken in the evening — Ideal as part of your wind-down routine, 1–2 hours before bed.

Gentle on digestion — Less likely to cause GI upset compared to other forms like citrate or oxide.

Sleep quality over quantity — Don't expect instant drowsiness; effects are subtle and build with regular use.

Pairs well with L-Theanine or Apigenin — Stack it for a full-spectrum sleep and calm protocol.

Product information

No pay to play
Goodbye pink taxes
Less noise. Fewer, better choices
No pay to play
Goodbye pink taxes
Less noise. Fewer, better choices
No pay to play
Goodbye pink taxes
Less noise. Fewer, better choices

Frequently Asked Questions

What payment methods can I use?

We offer 35 different payment methods including major providers like Mastercard, Visa, PayPal, American Express and Diners as well as many different local payment methods including Klarna, iDEAL, AliPay, Sofort, giropay, and many more.
Can I purchase items with another currency?

Yes, you may select a currency based on your personal preference. When you select your country in the country selector on the upper right of the website or are taken directly to your country’s version of the website, you will see prices listed in the regional currency.
Can I make changes to my order after it’s been placed?

We do everything we can to fulfill orders quickly and unfortunately cannot make updates after an order has been placed. These changes include removing or adding products and/or changing the delivery address. If a mistake has been made with your order information, it’s quickest to create a new order with the correct information and then let our Customer Service.

Magnesium L-Threonate is the only form specifically designed to cross the blood-brain barrier, delivering calming, cognition-supportive benefits where they matter most—your brain. This formula by Momentous features 2 grams of Magtein®, the patented compound shown to increase synaptic density and support neuroplasticity. Translation: better focus, steadier mood, and deeper, higher-quality sleep. If you’re dealing with racing thoughts, mental fatigue, or that wired-but-tired feeling common in perimenopause, this is your nightly go-to.