NOW Foods Magtein Powder 3.2 oz 91g

NOW® Magtein® delivers magnesium as magnesium L-threonate, a patented form developed for the brain. Magnesium is essential for nervous-system function and is critical for normal brain health and cognition, helping maintain the density and stability of neuronal synapses — but most magnesium forms don't cross into the nervous system well.* Magtein® readily crosses the blood-brain barrier for use in the brain, and laboratory studies indicate it supports brain health and may facilitate learning, memory and a relaxed mood.* Each serving provides 2,000 mg of Magtein® (about 144 mg elemental magnesium) for targeted cognitive support.*

About the key ingredients

• Magnesium L-Threonate (Magtein®) – 2,000 mg (144 mg elemental Mg): A patented magnesium form that readily crosses the blood-brain barrier to raise brain magnesium, supporting synaptic density, memory, learning and a relaxed mood.* Learn more about Magnesium from the NIH.
• Other ingredients: None — a pure, single-ingredient powder; sold by weight, not volume.

Who it's for

Magtein® suits adults focused on cognitive wellness — memory, learning and mental clarity — who want a magnesium form specifically developed to reach the brain.* It appeals to students, busy professionals and older adults, and to anyone who wants brain-targeted magnesium rather than a standard magnesium supplement.*

Suggested use

Mix a rounded 1/2 teaspoon into water or other beverage daily, preferably on an empty stomach two hours before sleep.

Quality & certifications

• Family Owned Since 1968
• GMP Quality Assured

Frequently asked questions

What makes Magtein® different from regular magnesium?
Magtein® is magnesium L-threonate, a patented form that readily crosses the blood-brain barrier — most magnesium forms don't reach the brain well. That's why it's used specifically for cognitive support: memory, learning and a relaxed mood.*

How and when do I take it?
Mix a rounded ½ teaspoon into water or a beverage daily, preferably on an empty stomach about two hours before sleep. It may make you drowsy at first.*

Will it make me sleepy?
Like other magnesium products, Magtein® may cause sleepiness, drowsiness or a headache when you start; this usually settles. That's partly why a portion is taken before bed. Reduce the dose if needed.*

Cautions & interactions

Like other magnesium products, Magtein® may cause sleepiness, drowsiness or headaches at first; reduce the dose, or consult a doctor and discontinue if these persist beyond a week. Because it's taken partly before bed, avoid activities requiring alertness if it makes you drowsy. Talk to your doctor before use if you are pregnant, nursing, taking medication or managing a medical condition (including reduced kidney function). Keep out of reach of children.

Allergen information: Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame 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.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.