Momentous Magtein Magnesium L-Threonate – Brain & Rest Support Supplement – Boosts Cognitive Function & Sleep Quality – NSF Certified for Sport -145 mg – 30 Servings
$49.95









Price: $49.95
(as of Nov 09, 2025 04:15:42 UTC – Details)
Product description
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Package Dimensions : 4.37 x 2.52 x 2.48 inches; 4.66 ounces
Department : All Ages, Unisex
Date First Available : March 30, 2022
Manufacturer : Momentous
ASIN : B09WWK4R2C
Best Sellers Rank: #6,046 in Health & Household (See Top 100 in Health & Household) #122 in Magnesium Mineral Supplements
Customer Reviews: 4.5 4.5 out of 5 stars 500 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Elevates Cognitive Function – Harness the power of magnesium L-threonate to help increase magnesium levels in the brain, which may promote overall brain health. Our powerful formula supports cognitive function including memory, learning, attention, & focus.
Promotes Quality Rest – Unlock the unique capability of Magtein magnesium L-threonate, the only form of magnesium demonstrated to penetrate the blood-brain barrier. By increasing blood flow to the brain, it supports quality rest for optimal recovery during sleep.
Enhances Function – Momentous magnesium L-threonate supplements help to facilitate muscle contraction, regulate blood pressure, & synthesize DNA & proteins. They also aid in the transmission of nerve signals, regulate neurotransmitter levels, & fuel energy production in brain cells.
Optimal Dosage, Optimal Results – In order to harness the full benefits of our magnesium L-threonate supplement, take 3 capsules 30-60 minutes before bedtime to promote restful sleep & energize the next day’s daily demands & activities.
Certified for Athletes – Providing products that give you peace of mind knowing that you’re making smart choices. High quality, research-backed ingredients, chosen by our world-class product engineers.

Karen J –
Magic magnesium
Feeling great after my doc recommended these. Brain fog cleared and I’m sleeping so much better! I had tried other magnesium but this is the one!
Pastor H –
Fights Leg Cramps
These reduced frequency of night time leg cramps resulting from nerve damage. No stomach upset.
Sara Rakestraw –
Great product
I just started taking this and so far it seems to be working. It says to take 3, but I took 2, because I wasn’t sure how it would affect me. I ended up taking only 1 at night and it works well. No side effects, so far. Will definitely keep using.
Chris T. Washburn –
Knock out sleep!
This really is better than so many others I have tried. If you want knock out sleep with no hangover, this is the one for you. It’s the quality that is worth it in spades, brand!
energy –
Do the job but expensive
Really help me sleep and go back to sleep if awaken in night. But they are pricy.
Harriette Bailey –
Great supplement
So far, so good! I’ve only been taking this supplement for a few days.
Darryl Davis –
On time
It’s what I ordered
Jennifer –
Worth it
Within 20 minutes of taking these, I am starting to doze off. If you have trouble getting down to sleep, GET THESE
Carmen –
Just gave me náuseas and felt more tired , I felt really awfull