smartmag
"very recommended"
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Magnesium made for your mind: Magnesium is involved in over 300 enzymatic reactions in the body, making it essential to get enough—in the right form. MagteinⓇ Magnesium L-Threonate is a unique clinically studied form that supports brain health and function.*
Magnesium (from 2,000 mg Magtein® Magnesium L-Threonate), Vegetable Cellulose Capsule, Stearic Acid, Cellulose, Silica
Use only as directed. Take 3 capsules daily. For best results take in divided doses, 1 capsule in the morning and 2 capsules two hours before sleep. Store in a cool, dry place.

Since 1973, Solaray has believed that what you put in your body should be proven, not promised.
We source our own raw materials and triple-test every lot.
We manufacture 95% of our products for full control.
15,000 tests per month verify ingredient potency and purity.^

In an industry where quality can vary widely, testing isn't just a step in the process. It is the process.
✅ Passed Testing for Heavy Metals**
Arsenic, cadmium, lead, mercury
✅ Passed Testing for Microbials**
Mold, yeast, coliform, e. Coli
✅ Passed Testing for Contaminants**
Gluten, ethylene oxide
✅ Passed Testing for Physical Properties
Moisture, color, disintegration, tap density, mesh 140, 20, and 60
**Most contaminants, heavy metals, and microbes are tested to ensure no more than 3 ppm.

Our production facility in Ogden, Utah is a GMP facility certified by NSF. We source and triple-test raw materials, make the majority of our products in-house, conduct stringent testing in our ISO-accredited lab, and distribute our own products to ensure quality and excellence in every bottle.
Disclaimer: The customer reviews and testimonials featured on this site reflect individual experiences and opinions. Results may vary and are not guaranteed. These statements have not been evaluated by the Food and Drug Administration (FDA). The content is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before starting any new supplement regimen or if you have concerns about your health.
Overall rating: 4.631579 / 5 from 38 reviews.
SmartMag Magtein ® Magnesium L-Threonate is a supplement praised for its high-quality ingredients and effectiveness in supporting brain health and function. Customers appreciate its ability to improve sleep and brain function, though some find the capsules large and difficult to swallow.
Review topics: ["ingredients","quality","feel","difference","effects","bottle","muscles","capsules","pills","supplement","magnesium","sleep","function","brand","option","support","side","mag","tablets","relaxation","vitamins"].
"very recommended"
— Kathryn C. (5/5)
"Helps with sleep, and even keel for stress"
— Amy B. (5/5)
"I used and felt the tablets were very easy to swallow one tablet daily after meals and they didn’t cause any stomach discomfort. I also felt I slept more soundly possibly because it supports brain function and improves my concentration during the day each serving provides 2 g of healthy, Ferate, magnesium, especially researched and safe form of magnesium that improves brain function so I feel reassured using it long-term for me. This is a reliable source of magnesium because it helps improve brain function and keeps me alert in a safe way."
— LukeN (5/5)
"I just started using this product. I usually has issue with waking up in the middle of the night and could not fall asleep. This thing helps me so good. Does not taste weird. The packaging is easy to open. Stable consistency. The potency is good. It helps my mind to think clearer after having babies and has foggy mind. I am beginning to like this product."
— Kathleenb122 4. (5/5)
"Very easy pill to swallow, though initially thought it may be harder due to the size. No after taste experienced and I find my memory being better and a better sense of calm with the support of the magnesium. Great supplement and can't wait to see continued results with use."
— JazmineA (5/5)
"I feel magnesium threonate is one of the better forms of magnesium. It comes with a higher price point, but the quality is better. The dosing says to take 1 in the morning and 2 at night. I feel more alert after taking it and a little less foggy. The pills were a little larger than I’m used to taking, but was still manageable."
— Meagan M. (5/5)
"I have been using these for a few weeks now and noticed my muscles are more relaxed when going to bed and I am able to remember more lately. However these make my stomach upset so I cannot take the daily recommended 3 capsules a day. I can only tolerate 2 capsules a day. The capsules are not huge but they are bigger than tablets and the bottle does have loose powder in it. But it is tasteless I just do not like the texture of the powder in my mouth. I will continue to use these and see how I feel once finishing the bottle."
— Raquele14 7. (4/5)
"Solaray SmartMag magnesium L3 and eight is a great supplement to add to your daily routine. The pills may be a little bit big, but they are easy to swallow and have no smell or aftertaste. The dosage says to take three capsules daily, but I only take one to two capsules at night to help me go to sleep."
— Middles12 5. (5/5)
"I have been taking these for a few weeks now, and they have been surprisingly effective! I have noticed a difference in my mood and have had less “brain fog”. The pills are large, but easy to swallow and don’t have a funky smell to them. The ingredients are good, which is also a plus!"
— Kaitlin C. (4/5)
"I'm honestly impressed. I’ve tried other magnesium supplements, but this Magtein formula is specifically for brain health, and I can actually feel it working. I feel more ""dialed in"" and less foggy during the day. It’s been a great addition to my routine for cognitive support, and it doesn't bother my stomach at all. Definitely a high-quality supplement!"
— Surrr 5. (5/5)
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.