header_search header_signed-out header_signed-in header_cart sharefilled circlex
Added to Cart
Cart Total:
Customers Also Bought:
24/7 Help

Now Foods, Magtein, Magnesium L-Threonate, 90 Veg Capsules

$22.78 $22.78 (Saved $15.21)

Thank you!

Your email is being processed.

Now Foods, Magtein, Magnesium L-Threonate, 90 Veg Capsules

Click to zoom
Shipping Saver ?
Our Price:
You Save:
$15.21 (40)
Quantity Discount:
Buy 3+
(5% off)

Sorry, this product is no longer in stock.

Earn 5% Loyalty Credit ?
Quantity Discount
$21.64 each
(5% off)
Combo Offer: $25.73

Sorry, this product is no longer in stock.

Now Foods, Magtein, Magnesium L-Threonate, 90 Veg Capsules

In Stock
  • Expiration Date: 02/2019
  • Shipping Weight:
    0.35 lbs
    Switch to Metric units
  • Product Code: NOW-02390
  • UPC Code: 733739023902
  • Package Quantity: 90 Veg Capsules
  • Dimensions:
    2.5 x 2.5 x 4.4 in, 0.3 lbs
    Switch to Metric units
Frequently Purchased Together
Product Overview


  • Cognitive Support
  • Supports Memory and Learning
  • Promotes Brain Health
  • Non-GMO
  • A Dietary Supplement
  • Vegetarian/Vegan
  • General Health
  • Family Owned Since 1968
  • GMP Quality Assured

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.

Suggested Use

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).

Other Ingredients

Cellulose (capsule), rice flour, magnesium stearate (vegetable source) and silica.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.


Caution: For adults only. Like other magnesium products, Magtein may induce sleepiness, drowsiness or headaches at first. Reduce the dosage, consult a doctor, or discontinue use if conditions persist for more than one week. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.

Natural color variation may occur in this product.

Supplement Facts
Serving Size: 3 Veg Capsules
Servings Per Container: 30
  Amount Per Serving % Daily Value
Magnesium (from Magtein Magnesium L-Threonate) 144 mg 34%
Magtein (Magnesium L-Threonate) 2 g (2,000 mg)
† Daily Value not established.
iHerb Customer Reviews

Sleeping Like A Log

Posted by iHerb Customer on Feb 14, 2018 | Verified Purchase

The only reason I haven't give five stars is because I really can't tell if it's helped with my brain cognition. I do find that it is superior to other kinds of Magnesium I would usually take before bed though, and for this reason I would order again. I sleep like a log dog when I take two of these at night (assuming I haven't just done a Netflix marathon).

Thanks for your feedback!

very good

Posted by iHerb Customer on Feb 10, 2018 | Verified Purchase

very good

Thanks for your feedback!


Posted by iHerb Customer on Jan 11, 2018 | Verified Purchase

Probably the best form of magnesium I've tried. I get very good sleep and when I awaken I am wide awake and ready to start the day. Clearer thinking and better memory and I've only been taking this for a couple of weeks. I take one in the afternoon and two about two or three hours before going to bed. At 71 yrs old I find this a very good boost.

Thanks for your feedback!

Great discounts f loyal customers

Posted by iHerb Customer on Jan 09, 2018 | Verified Purchase

IHerb gives fantastic deals, especially for loyal customers, who receive better discounts than one could find elsewhere for the same products.

Thanks for your feedback!

for good sleep

Posted by iHerb Customer on Jan 01, 2018 | Verified Purchase

oh God. This one is GREAT for good sleep. I did a wonderful job to choose this item. yeah

Thanks for your feedback!