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The Quicksilver Advantage
Unlike most magnesium supplements, Magtein (magnesium L-threonate) is clinically proven to cross the blood-brain barrier. Paired with Quicksilver’s advanced liposomal delivery, it delivers superior absorption, targeted cognitive support and fast-acting benefits. We’ve supercharged brain function by adding 450 mg of high-purity phosphatidylcholine (PC) per serving—a vital phospholipid for neuronal membrane support and healthy neurotransmission. The powerful combination of Magtein + PC helps fuel cognition and neuroplasticity supporting long-term brain health. Elevate your mental game with Magtein + phospholipids delivered in a liposome—an unmatched formulation for brain performance and mental well-being.

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Liposomal Magtein®

Liposomal Magtein®

Smarter Magnesium. Bigger Results.

Meet the high-octane magnesium formulation designed to do more for your cognition, mood, and sleep than the basic magnesium brain supplement. Liposomal Magtein combines Quicksilver’s unparalleled liposomal delivery technology with brain-centric magnesium L-threonate (Magtein) and high-purity phosphatidylcholine (PC)—a well-known phospholipid that supports neuronal membranes and healthy neurotransmission.

Why Magtein® (magnesium L-threonate)? 

  • Scientifically Proven Ingredient – Developed from MIT research

  • It Reaches Your Brain – Crosses the blood-brain barrier for maximum impact

  • Helps Boost Memory, Focus & Learning – Enhances neural plasticity

  • Helps Calm Stress & Supports Deep Sleep – Modulates neurotransmitters for balance

  • Smarter Absorption On Overdrive – Magtein + Liposomal delivery ensures superior uptake and results

NET WT. 15.2 FL OZ (450mL)
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The Quicksilver Advantage
Unlike most magnesium supplements, Magtein (magnesium L-threonate) is clinically proven to cross the blood-brain barrier. Paired with Quicksilver’s advanced liposomal delivery, it delivers superior absorption, targeted cognitive support and fast-acting benefits. We’ve supercharged brain function by adding 450 mg of high-purity phosphatidylcholine (PC) per serving—a vital phospholipid for neuronal membrane support and healthy neurotransmission. The powerful combination of Magtein + PC helps fuel cognition and neuroplasticity supporting long-term brain health. Elevate your mental game with Magtein + phospholipids delivered in a liposome—an unmatched formulation for brain performance and mental well-being.

DOWNLOAD THE PRODUCT BRIEF

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VEGAN

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TESTED SOY PROTEIN FREE

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TESTED GLUTEN FREE

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TESTED ALLERGEN-FREE

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SUGAR-FREE

  • Best taken daily. Take 5mL in the daytime and 10mL one hour before sleep for best results.
  • Hold in mouth for 30 - 90 seconds before swallowing.
  • Store product at room temperature.
  • If pregnant, breastfeeding, or taking prescription drugs, consult your healthcare practitioner before use.

Magtein© is protected under a family of US patents, pending patents, and is protected worldwide.
Magtein© is a trademark of Magceutics©, Inc. and is distributed exclusively by Threotech LLC.
This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
Information provided by this website or this company is not a substitute for individual medical advice. | ©Quicksilver Scientific, Inc., 2025 Louisville, CO
Magtein®
Supplement Facts
Serving Size: 15 mL
Servings Per Container: 30 		Amount Per Serving % Daily Value
Magnesium (elemental) (from 1000 mg Magnesium L-Threonate as Magtein®) 72 mg 17%
Phosphatidylcholine (from highly purified phospholipids) 450 mg **
**Daily Value not established
OTHER INGREDIENTS:
Water, glycerin, ethanol, acacia gum, natural citrus oils, citric acid

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CUSTOMER REVIEWS

The reviews on this page reflect the personal experiences and opinions of our customers. They do not represent medical claims or endorsements made by the company or guarantee specific results.