Description
Price: $29.95
(as of Nov 21, 2025 07:19:33 UTC – Details)
Take 3 NOW Magtein capsules daily in divided doses (take 1 capsule during the daytime, preferably in mid-afternoon and take 2 capsules one hour before sleep). Magnesium (Mg) is an essential mineral best known for its role in bone and nervous system function. Recent research has demonstrated that it is also critical for normal brain health and normal cognitive function by maintaining the density and stability of neuronal synapses. However, most forms of Mg are not easily absorbed into the nervous system. Magtein is a patented form of Mg that readily crosses the blood-brain barrier for utilization in the brain. Laboratory studies indicate that Magtein supports brain health and may facilitate learning and memory, as well as a relaxed mood. Magtein is a registered trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc. Magtein is protected under US patents 8,178,118; 8,142,803; 8,163,301; and other pending patents.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.5 x 2.5 x 4.44 inches; 0.02 ounces
Item model number : 2390
Date First Available : April 2, 2014
Manufacturer : NOW Sports – Nutrition and Wellness
ASIN : B00JEZQAFG
Best Sellers Rank: #1,761 in Health & Household (See Top 100 in Health & Household) #22 in Blended Vitamin & Mineral Supplements #323 in Sales & Deals
Customer Reviews: 4.6 4.6 out of 5 stars 6,865 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); } }); });
2 grams of Magnesium L-Threonate for cognitive support*
A patented form of magnesium that readily crosses the blood-brain barrier for utilization in the brain*
Take 3 capsules daily in divided doses (take 1 capsule during the daytime, preferably in mid-afternoon and take 2 capsules one hour before sleep)
Supports brain health and may facilitate learning and memory, as well as a relaxed mood*
Made and quality tested in the USA with globally sourced ingredients*
Johanna W –
Key to good, natural sleep
Long-time standard for ensuring that I can actually sleep – no small thing! I take 3 or 4 an hour before bedtime (per Dr’s suggestion) and before long actually feel relaxed and sleepy. This just does not happen for me without Magtein.Magtein facilitates natural feeling and restorative sleep cycle for me. I feel awake and refreshed in the morning -not sickish as I did when I tried Valerian.Worth the price, from a respected brand. I am sticking with Magtein!
James V. from Fairfax, VA –
Powerful
The first time I tried it, I saw a bright circle that expanded and contracted with my heartbeat. I thought I may even fall to the ground. Whatever it was, the impact was almost instantaneous. Since then, I’ve taken 3 pills everyday, 1 in the morning and 2 in the evening. It feels as if the content is truly getting to my brain. I am focusing better. Able to recall numbers (such as the lock combination) better. Sleeping longer intervals. It used to be every 2 to 4 hours that I awoke. Now I am sleeping through 4 to 5 hours. Waking up only once during the night (and not twice).I’ve difficulty swallowing the whole pill. I open the capsule by holding the smaller of the two halves on the bottom, then dump the powder onto the center of my tongue. It gets easier with practice. I don’t taste anything, unless I spill some onto other parts of the tongue. Then I wash it down with water or coffee. Even works for two pills at a time.
Yesmir –
⭐️⭐️⭐️⭐️⭐️ Excellent Magnesium for Brain Health
I’m 42 years old and have hypothyroidism, which often leaves me dealing with fatigue, brain fog, and memory issues. I decided to try Magtein (Magnesium L-Threonate) because of its reputation for supporting cognitive function, and I’m really glad I did.Unlike other forms of magnesium I’ve tried, this one actually seems to make a noticeable difference. Since starting it, I feel my concentration, focus, and memory are sharper, and I don’t experience the same level of mental fatigue throughout the day. I also like that it’s vegan, non-GMO, and comes in capsules that are easy to take.It has become an important part of my supplement routine, especially to support brain health and learning capacity, which can sometimes be more challenging with thyroid issues.Overall, this is a high-quality supplement that truly delivers on its claims. I would definitely recommend it to anyone who wants better focus, memory, and mental clarity.
Rose Schultz –
Great for Focus and Relaxation!
This supplement really helps with mental clarity and calmness. I’ve noticed better sleep and less stress since taking it. High-quality product from a trusted brand! 🌙✨
Neuronautics –
Truly Effective Magnesium Supplement—Great for Sleep and Stress
I’ve tried various forms of magnesium supplements, but NOW Brand Magtein has genuinely impressed me. Magtein is unique because it specifically helps calm down overactive glutamate in the brain, meaning it’s great if you’re someone who struggles with overstimulation, stress, or caffeine jitters. I’ve personally noticed it helps me fall asleep quicker, and most importantly, I wake up feeling refreshed and mentally clear.One minor point: the bottle doesn’t come with a moisture-absorbing packet inside, so be mindful to store it carefully to avoid moisture. That said, it’s an outstanding value for the price compared to similar Magtein products out there.If you’re looking for magnesium that actually helps manage stress, enhances sleep quality, and reduces overstimulation, I wholeheartedly recommend giving this a try. It’s become a staple for my nightly routine.
Ione Brasil –
Surprisingly Effective for Mental Clarity and Focus
I started taking the NOW Foods Magtein Magnesium L-Threonate because I wanted to support my focus and reduce brain fog. After a couple of weeks of consistent use, I genuinely noticed clearer thinking and more mental stamina throughout the day. It also helped me sleep better at night without making me groggy in the morning, which was a huge bonus I didn’t expect. No stomach discomfort either, unlike some other magnesium supplements I’ve tried.This supplement is now part of my daily routine. I love that it’s in a veggie capsule and doesn’t contain unnecessary fillers. It feels like a high-quality product and definitely worth it if you’re looking to support cognitive health naturally. I just wish I had started using it sooner.
Mary E. Mahon –
Helps with insomnia
After trying a few brands these are the best for me achieving some sleep . I ease into about 4-5 hours rest. No drowsy mornings. Recommended by my MD
amazonobsessed –
Good quality and easy on stomach
Easy on stomach
Rob –
Really improves my sleep, measurably in my Whoop app
Richard P –
Better for taking in the day
Mr K.K. –
Was initially impressed that this product seemed to work with other supplements to slightly boost my intuition, unfortunately that initially also came with quite severe headaches and blood pressure issues. I have since traced the side affects to either excess B12 supplements in my diet or excess total magnesium due to another form of magnesium that I was also taking at the same time (after discontinuing both I was able to gradually get used to this form of magnesium). Just keep in mind that if you have blood pressure issues / severe headaches shortly after taking this for a short time it may possibly be linked to this product / other dietary adjustments may be required.
ravi shankar –
There is no doubt that Magnesium L-threonate is the best form magnesium but it is bit costly than gluconate,but it is worth of buying. For better results need to take 4-5 capsules a day because elemental magnesium contain is only 144 mg and for adults more than 400 mg per day is required.
JayJay –
This magnesium L-threonate was recommended in one of the podcasts interview of Mel Robbins with the American doctor for cognitive supplement for women in 50s. I tried to look around, but can’t find an Australian manufactured product of this classification. Browse here on Amazon, and found one coming from America, was hesitant to buy this since it is a bit pricey. But will all good reviews, I decided to get this. Before I had a hard time goin back to sleep in the middle of the night, but since I bought this and started taking 2 caps every night, (3 nights now of taking it) I could sleep now in hours. I still sometimes wake up every now and then, but I can easily go back to sleep. I aim to sleep at least 7 hrs now and hope to maintain this good sleep and maybe not feel too exhausted after work. Thank you!