Cognitive Support Supports Memory and Learning Promotes Brain Health Non GMO Dietary Supplement Vegetarian/Vegan Kosher General Health Family Owned Since 1968 Halal GMP Quality Assured Magnesium is an essential mineral that supports bone, muscle, and nervous system function. Magtein® (magnesium L-threonate) is a specialized form shown to effectively support cognitive function by crossing the blood-brain barrier and helping maintain healthy synapse activity, mental clarity, and a calm, balanced mood.
International delivery
Shipping calculated at checkout
Returns & exchanges
Within 30 days of delivery
Cognitive Support Supports Memory and Learning Promotes Brain Health Non GMO Dietary Supplement Vegetarian/Vegan Kosher General Health Family Owned Since 1968 Halal GMP Quality Assured Magnesium is an essential mineral that supports bone, muscle, and nervous system function. Magtein® (magnesium L-threonate) is a specialized form shown to effectively support cognitive function by crossing the blood-brain barrier and helping maintain healthy synapse activity, mental clarity, and a calm, balanced mood.
SKU
3-160783
Brand
NOW Foods
Category
Health & Wellness / Minerals / Basic Minerals / Magnesium
Variants
1
Customer reviews
5.0
verified purchase
Helpful. Consistent daily use for weeks is important.
Magtein (Magnesium L-Threonate) is a unique form of magnesium that effectively crosses the blood-brain barrier, raising magnesium levels in the brain.
Positive effects :
Improves overall cognitive performance.
Supports healthier brain aging (some studies show a reduction in estimated cognitive age)
Enhances sleep quality, particularly deep/restorative sleep, and helps feel more refreshed
Seems to reduce stress-related impairment and support daytime mental clarity and energy
10/4/2026
5.0
verified purchase
Magnesium L-Threonate
Magnesium is an essential mineral that supports bone, muscle, and nervous system function.
9/27/2026
5.0
verified purchase
Great mag supp!
I bought the Now Foods Magtein as a magnesium supplement. I have trouble with some forms of magnesium so I was pleased to find the L-Threonate form to help me at night.
9/24/2026
5.0
verified purchase
Good
Works well for sleep, no muscle cramps, quality is good,
9/16/2026
5.0
verified purchase
muscles and brain
magnesium threonate is the only form of magnesium that crosses the blood brain barrier..
9/7/2026
5.0
verified purchase
So Far, So Good
I think this definitely does support cognitive health. I have been able to work and focus harder.
8/30/2026
5.0
verified purchase
Efficient substitute for capsules
Got this format to replace the capsules as it's more economical. We add it to a protein drink in the morning to cover cognitive support.
8/26/2026
5.0
verified purchase
Amazing for sleep
This has been amazing for my sleep. Highly recommend it to anyone looking for a good magnesium option.
8/24/2026
5.0
verified purchase
I have been giving it ( 1/2tea spoon, no taste)to my son with ADHD in the morning for 2weeks( jogurt or orange juice), and everything is ok.
8/24/2026
5.0
verified purchase
Very good
This product is very good. It helps the brain to focus on the tasks
