The only magnesium to cross
The only magnesium to cross the blood brain barrier and so far the most effective I have found. It has increaded in proce by £20 since I startred buying in two years ago, so I might need to find a different supply.
90 Capsules
(2,09 zł / 1 Capsules)
Pre-order for 17/11/2026, delivery 2–3 working days once available
Local shipping with DHL from our EU warehouse (NL) – no customs fees.
Customer service in English, German, and French
Incl. VAT
Start your day with confidence—Magnesium L-Threonate from Momentous delivers 2 grams of Magtein®, a unique and highly absorbable form of magnesium. This essential mineral contributes to a reduction of tiredness and fatigue, so you can keep up with life’s demands. Magnesium also supports the normal functioning of your nervous system and helps maintain psychological balance, making it a smart choice for busy minds.
Looking after your body is just as important: magnesium plays a key role in maintaining normal bones and teeth, and supports normal energy-yielding metabolism. With its advanced bioavailability, this supplement helps you meet your daily magnesium needs with ease—so you can feel your best, every day.
Additional Information:
Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.
We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.




Magnesium L-Threonate from Momentous offers a highly bioavailable form of magnesium, Magtein®, which helps reduce tiredness and fatigue, supports the nervous system, and maintains healthy bones and teeth. Customers appreciate its effectiveness in improving sleep quality and overall life balance.
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The only magnesium to cross the blood brain barrier and so far the most effective I have found. It has increaded in proce by £20 since I startred buying in two years ago, so I might need to find a different supply.
Helped with Falling asleep and staying asleep!
We think it works well
Gives me the wildest dreams so I take 1/3 of the dose.
The essence of my sleep stack using momentous products. It’s really been a game changer for me
I have been taking this supplement for the past year. It has been the only thing that has helped ease tension, stress and anxiety. I take 1-2 with breakfast and have not noticed it makes me feel sleepy. Sometimes I'll take 1 in the morning and another in the evening after dinner but usually it's 1 capsule per day not the 3 capsule recommended dose which means it lasts for ages.