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Dr. Mercola's Magnesium Advanced features patented Magtein® magnesium L-threonate — the only form of magnesium clinically shown to cross the blood-brain barrier — delivering 2,000 mg per serving to support cognitive function, memory, and relaxation. Unlike other magnesium forms that can cause GI discomfort, this formula is gentle on digestion and does not act as a laxative. Gluten-free, GMO-free, and soy-free, the 270-capsule bottle provides a full 90 servings.

🧠 Brain-Penetrating💪 Superior Absorption💤 Gentle on Digestion✅ Clean Formula💊 90 Servings

Product Details

  • Form: Capsules | Serving Size: 3 capsules | Servings: 90
  • Key Ingredient: Magtein® Magnesium L-Threonate (2,000 mg/serving)
  • Brand: Dr. Mercola | Part Number: 10238
  • Package Dimensions: 7.8 x 6.1 x 4.7 inches

Brand: Dr. Mercola

Features:

  • Each Bottle of Magnesium L-Threonate, 2,000 mg Per Serving Contains 90 Servings
  • Following Dr. Mercola's belief in providing the best quality products, this product is Gluten free, GMO free, Soy Free
  • Our Magnesium L-Threonate delivers 2,000 mg of patented Magtein magnesium L-threonate, which has a superior absorption characteristic of any form of magnesium.*
  • Unlike other forms of magnesium that can cause gastrointestinal discomfort and loose stools, magnesium L-threonate does not act as a laxative and can help to significantly reduce GI discomfort.*

Part Number: 10238

Details: Premium Supplements Dietary Supplement MagTein Capsule

EAN: 0810487030694

Package Dimensions: 7.8 x 6.1 x 4.7 inches

Frequently Asked Questions

What is Magnesium L-Threonate and why is it different?

Magnesium L-Threonate (sold as Magtein®) is the only form of magnesium clinically shown to effectively cross the blood-brain barrier. Most other forms of magnesium — such as magnesium oxide or citrate — are primarily absorbed in the gut and have limited impact on brain magnesium levels. Magtein® was developed by MIT researchers specifically to raise magnesium concentrations in the brain, supporting cognitive function, memory, and mental clarity.

Will this cause digestive issues or act as a laxative?

No. Unlike magnesium oxide or magnesium citrate, magnesium L-threonate does not act as a laxative and is gentle on the digestive system. It is specifically formulated to be absorbed at the cellular level without causing GI discomfort or loose stools.

How much magnesium is in each serving?

Each serving is 3 capsules and delivers 2,000 mg of Magtein® Magnesium L-Threonate. The 270-capsule bottle provides 90 servings total.

What benefits does Magnesium L-Threonate support?

Magnesium L-Threonate supports cognitive function and memory, relaxation and sleep quality, healthy brain aging, and overall nervous system health. Because it crosses the blood-brain barrier, it may have a more direct impact on brain health than other magnesium supplements.

Is this product free from common allergens?

Yes. Dr. Mercola's Magnesium Advanced is gluten-free, GMO-free, and soy-free.

How does this compare to other magnesium supplements?

Most magnesium supplements use forms like oxide, citrate, or glycinate, which are absorbed primarily in the gut. Magtein® Magnesium L-Threonate is unique because it was specifically engineered to penetrate the blood-brain barrier, making it the preferred choice for those focused on brain health, cognitive support, and mental performance rather than general magnesium replenishment.

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