








Price: $49.95
(as of Nov 07, 2025 10:32:44 UTC – Details)
Product description
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Why Momentous Video Merchant Video






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: #5,567 in Health & Household (See Top 100 in Health & Household) #109 in Magnesium Mineral Supplements
Customer Reviews: 4.5 4.5 out of 5 stars 499 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.
9 reviews for Momentous Magtein Magnesium L-Threonate – Brain & Rest Support Supplement – Boosts Cognitive Function & Sleep Quality – NSF Certified for Sport -145 mg – 30 Servings
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$49.95

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!
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!
Chad Thompson –
Ditch the sleep drugs, improve sleep naturally
High quality supplement. I am meticulous about tracking my sleep and seeking the highest restorative sleep as possible. Been taking for almost a month now and every single night my restorative sleep has increased by a minimum of 15%, usually more. Helps you to fall asleep quicker and overall feel calmer and more focused each morning. Highly recommend.
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.
energy –
Do the job but expensive
Really help me sleep and go back to sleep if awaken in night. But they are pricy.
Michael and Adriana Lee –
Game changer for Sleep
Got this on the recommendation of Dr. Andrew Huberman. This stuff has been a game changer for my sleep. Assuming I’m not drinking a gallon of water before bed, this has nearly eliminated all wakeups in the middle of the night. I’ve been on this now for several months and have truly noticed the difference both in sleep and cognitive function. Check it out.
Delta R. –
Fantastic supplement
It was suggested by my doctor that I start taking magnesium supplements, specifically l-threonate. It has been incredibly helpful with getting proper sleep and reducing night time waking.
Jennifer M –
Best magnesium product!
This product is the only thing that has helped me with my sleep. Even other magnesium capsules have not helped. Recently I’ve been waking up 45 minutes after falling asleep with restless legs. Couldn’t go back to sleep. Since taking 2 capsules every night before bedtime, I can honestly say I’m getting the best sleep I’ve ever had. Thank you!!
Carmen –
Just gave me náuseas and felt more tired , I felt really awfull