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Swanson Vitamins

Magtein® Magnesium L-Threonate, 90 Vegan Capsules

4.7 · 731 reviews
4,597 ₽

Memory and Cognitive Support Featuring Magtein® Mineral Supplement Science-Backed Quality Since 1969 Vegan Non-GMO Gluten Free Dairy Free Only form of magnesium shown to cross the blood-brain barrier to promote optimum levels within the brain. Supports improved cognitive function and working memory.

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Memory and Cognitive Support Featuring Magtein® Mineral Supplement Science-Backed Quality Since 1969 Vegan Non-GMO Gluten Free Dairy Free Only form of magnesium shown to cross the blood-brain barrier to promote optimum levels within the brain. Supports improved cognitive function and working memory.

Customer reviews

5.0
verified purchase
Helps me relax and sleep

I’ve gone through 3 bottles of this now. I take 2-3 pills at night before bed and I’ve never had better, more restful sleep. I feel energized in the morning like my sleep was actually restorative. There is no taste and the capsules are normal size. There are multiple Magtein supps out there at around the same price point and I’ve tried them all. This brand I found to be the most impactful to me personally.

3/13/2025
5.0
verified purchase
Great for migraines

I use these for migraines and they do help some but you have to take them constantly to notice any difference. I know a lot of people they help sleep but I'm not one of them.

10/22/2024
5.0
verified purchase
Great

My chemist friend tells me that Magnesium L Threonate is the only magnesium that crosses the blood brain barrier because it is joined with a enzyme. What I notice is that if I am in bed with the light off, it also provides for me a small shift that allows me to drop that last bit into sleep. It also doesn't create diarrhea as so many magnesiums can.

9/18/2024
5.0
verified purchase
Mg for neurological pain

This form of Mg was recommended to me as rhe best after stroke. I cannot say yet how it works on neurological level, but for sure it decreases neurological pain/ceamps in legs. Only one pill daily before sleep. Highly recommsnded!

6/17/2026
5.0
verified purchase
Perfect

exactly as I explained, best quality with very good ingredients, normal size, I feel much better after a few days that I'm using it. My memory is getting better and better with this type of magnesium.

5/16/2026
5.0
verified purchase
cognitive support

A patented form of magnesium clinically studied for its ability to cross the blood–brain barrier. Magtein® supports memory, learning, mental clarity, and overall brain health while contributing to normal nervous system function

4/19/2026
5.0
verified purchase
Genuine Magtein, fair price, arrived fast

Got this yesterday. Packaging clean, bottle sealed, and it’s the real patented Magtein. That matters because it’s the only magnesium form shown to cross the blood-brain barrier, so you’re actually paying for sleep and cognitive effects instead of generic magnesium in a fancier bottle. Capsules are a reasonable size, easy to swallow, no smell. Vegan caps. Three capsules for the full dose is standard across all Magtein brands, not a Swanson quirk, and 90 caps gets you a clean month. Price is the main reason to buy Swanson’s version. Other brands charge a lot more for the same patented ingredient. Swanson makes daily dosing actually affordable without compromising the form. Running it an hour before bed with L-theanine and melatonin. Too early for long-term results, will update in a few weeks. So far, no complaints.​​​​​​​​​​​​​​​​

4/9/2026
5.0
verified purchase
Best magnesium ever !

I recommand Magtein for his benefits on my sleep. I have never sleep so well in my life. High quality ingredient, taste neutral. Definitely a good investment

3/31/2026
5.0
verified purchase
Great product

Magnesium L-Threonate has noticeably improved my mental clarity and cognitive calmness. I feel more focused during the day and more relaxed in the evening without feeling sedated. It’s a well-tolerated form of magnesium that supports both brain and nervous system health.

1/15/2026
5.0
verified purchase
Started seeing some benefits

I did not get this magnesium for joint pain, sleep, or muscle tension. I got it for its memory and cognitive support, i have been using it for a bit i feel more docused during my classed. The pill size is good not too big, and no smell, packaging is great the bottle is tinted

12/19/2025