Magtein, Cognitive Support, Magnesium L-Threonate, 90 Veggie Caps, Now Foods

The only form of Magnesium clinically shown to cross the blood-brain barrier — 2,000 mg of patented Magtein® per serving to support memory, learning, cognitive function, and a calm, relaxed mood.

Why

Magnesium is critical for brain health — it plays a key role in maintaining the density and stability of neuronal synapses, the connections between brain cells that underpin memory, learning, and cognitive function. The problem is that most forms of magnesium (oxide, citrate, glycinate) are poorly absorbed into the brain and struggle to cross the blood-brain barrier in meaningful amounts. Magtein® (magnesium L-threonate) was developed by researchers at MIT specifically to solve this problem. By binding magnesium to L-threonate — a metabolite of Vitamin C — scientists created a form that readily crosses the blood-brain barrier and effectively raises magnesium concentrations in the brain. Laboratory and clinical studies indicate that Magtein® supports synaptic density, memory, learning capacity, and a relaxed, calm mood. NOW Foods delivers 2,000 mg of Magtein® per serving (3 capsules) in a clean vegan formula. GMP quality assured, free from common allergens. 90 veggie caps — 30 servings.

Key Benefits

• The only magnesium form shown to effectively cross the blood-brain barrier
• Developed by MIT researchers specifically for brain magnesium support
• Supports synaptic density and stability — the foundation of memory and learning
• Supports memory, learning capacity, and cognitive function
• Supports a relaxed, calm mood
• Supports healthy sleep — especially when taken before bed
• Vegan, GMP quality assured
• Free from wheat, gluten, soy, milk, egg, fish, shellfish, and tree nuts
• 90 veggie caps — 30 servings at 3 capsules daily

Formula Highlights

• Magtein® (Magnesium L-Threonate) — 2,000 mg per serving; patented MIT-developed form that crosses the blood-brain barrier
• Delivers 144 mg elemental magnesium (36% DV) per serving
• L-Threonate — a metabolite of Vitamin C; the carrier molecule that enables brain uptake
• Vegan cellulose capsule — no gelatin

Supplement Facts

Serving Size: 3 Veggie Caps | Servings Per Container: 30

Suggested Use

Take 3 capsules daily in divided doses for best results: 1 capsule during the daytime (preferably mid-afternoon) and 2 capsules approximately one hour before sleep. This split-dose protocol supports daytime cognitive function while maximising the sleep and relaxation benefits of the evening dose.

Other Ingredients

Cellulose (capsule), rice flour, magnesium stearate (vegetable source), silica. Free from wheat, gluten, soy, milk, egg, fish, shellfish, and tree nuts. Vegan.

About NOW Foods

Family owned since 1968, NOW Foods is one of the most trusted names in natural supplements — committed to making high-quality, affordable supplements that are GMP quality assured, rigorously tested, and never compromised on ingredients.

Warnings

Magtein® may cause sleepiness, drowsiness, or headaches when first starting — this is normal as the brain adjusts to increased magnesium levels. Start with a lower dose if needed and increase gradually. Reduce dosage or consult a healthcare practitioner if symptoms persist for more than one week. For adults only. Consult your healthcare practitioner before use if pregnant, nursing, taking medication, or if you have a medical condition. Keep out of reach of children. Store in a cool, dry place.