Magnesium L-Threonate
What is Magnesium L-Threonate?
Magnesium L-Threonate (commonly known by the trademarked form Magtein® or L-Threonic Acid Magnesium Salt) is a uniquely synthesized, highly bioavailable form of magnesium bound to L-threonic acid, a natural metabolite of vitamin C. Unlike traditional inorganic or organic magnesium salts that exhibit poor blood-brain barrier permeability, Magnesium L-Threonate is specifically engineered to cross the blood-brain barrier efficiently, elevating central nervous system magnesium concentrations. Formulated by Essential Aminos in 550mg capsules with 60 units per bottle, researchers and laboratories investigate this compound for its targeted support of hippocampal synaptic density, cognitive processing speed, memory retention, and sleep architecture regulation.
For laboratory and in vitro evaluation, researchers often choose to buy Magnesium L-Threonate in standardized 550mg oral capsule formats. Capsules allow for precise dosage administration without requiring manual weighing or specialized reconstitution solution protocols required for lyophilized compounds.
Chemical and Molecular Data
| Compound Name | Magnesium L-Threonate |
|---|---|
| Quantity / Format | 550mg Capsules (60 Units per Bottle) |
| Synonyms / Alt Names | L-Threonic acid magnesium salt; Magnesium (2R,3S)-2,3,4-trihydroxybutanoate; Magnesium L-threonate anhydrous |
| CAS Number | 778571-57-6, 2088918-94-7 |
| Chemical Formula | C8H14MgO10 |
| Molecular Weight | 294.50 g/mol |
| IUPAC Name | magnesium bis((2R,3S)-2,3,4-trihydroxybutanoate) |
| InChIKey | YVJOHOWNFPQSPP-BALCVSAKSA-L |
| SMILES Code | C([C@@H]([C@H](C(=O)[O-])O)O)O.C([C@@H]([C@H](C(=O)[O-])O)O)O.[Mg+2] |
What are the Mechanisms of Action?
The biochemical pathways and cellular targets of Magnesium L-Threonate include:
- Blood-Brain Barrier Transport & Synaptic Density: L-threonate acts as a targeted bio-carrier that facilitates the active transport of elemental magnesium ions (Mg2+) across the blood-brain barrier. Increased intraneuronal magnesium density enhances NMDA receptor structural stability and upregulates NR2B subunit expression, expanding synaptic density and structural plasticity within hippocampal networks.
- Slow-Wave Sleep & Autonomic Modulation: Research cataloged in clinical sleep studies demonstrates that Magnesium L-Threonate modulates central GABAergic pathways and autonomic balance, increasing deep (slow-wave) and REM sleep duration while reducing nocturnal heart rate metrics.
- Neuro-Metabolic Protection & Stress Dampening: Randomized controlled trials evaluated in Frontiers clinical trial data confirm that elevated brain magnesium suppresses excessive hypothalamic-pituitary-adrenal (HPA) axis excitability, reducing stress indicators, boosting working memory, and reversing estimated cognitive brain age markers.
What are the Clinical & Preclinical Trials on Magnesium L-Threonate?
When evaluating research efficacy and published experimental literature for Magnesium L-Threonate:
- Randomized Double-Blind Sleep & Daytime Functioning Trial: A landmark human trial indexed in PMC Article PMC11381753 evaluated adults with self-reported sleep issues. Results confirmed that Magnesium L-Threonate supplementation significantly improved overall sleep quality, increased deep/REM sleep duration, and enhanced morning behavioral energy, mental alertness, and daily productivity compared to placebo.
- Cognitive Performance & Brain Age Reduction Trial: A double-blind, randomized trial detailed in PMC Article PMC12832366 demonstrated that daily Magtein® administration over 6 weeks significantly improved composite cognitive performance (measured via NIH Toolbox working and episodic memory assays), reduced reaction times, increased heart rate variability (HRV), and achieved an estimated 7.5-year reduction in cognitive brain age.
- Safety & Gastric Tolerability Profile: Across multi-week clinical trials, Magnesium L-Threonate demonstrated superior gastrointestinal tolerability compared to traditional magnesium salts (such as oxide or citrate), exhibiting no significant osmotic laxative effects at standard research dosages.
How does Magnesium L-Threonate compare to other compounds?
To evaluate neuro-cognitive signaling, sleep architecture modulation, and delivery formats, researchers compare Essential Aminos’ 550mg Magnesium L-Threonate capsules against specialized multi-ingredient dissolving strip formulations:
| Compound / Product | Primary Target | Key Active Ingredients | Biological Impact / Receptor Affinity |
|---|---|---|---|
| Magnesium L-Threonate (550mg Capsules) | Blood-Brain Barrier Magnesium Transport, Synaptic Plasticity & NMDA Receptors | Pure Magnesium L-Threonate (550mg per capsule unit) | Directly elevates brain mineral density to expand hippocampal synaptic density, reduce cognitive brain age, and improve deep sleep architecture over time |
| Brain Fuel Dissolving Strips | Adenosine Antagonism, Cholinergic Signaling & Cerebrovascular Circulation | Paraxanthine, L-Theanine, Alpha-GPC, Huperzine A, Vinpocetine | Provides rapid, acute cognitive arousal and neurotransmitter elevation via sublingual absorption, contrasting with Magnesium L-Threonate’s structural mineral-replenishment mechanism |
| Sleep Dissolving Strips | Circadian Phase Shifts, Direct GABAergic Agonism & Sedative Neurotransmission | Melatonin, L-Theanine, GABA, Apigenin, Valerian Root, Magnolia Bark | Triggers fast-onset sleep induction and circadian synchronization via direct hormone and neurotransmitter receptor activation, whereas Magnesium L-Threonate restores physiological sleep depth through central ion channel regulation |
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Disclaimer: All compounds and research materials provided by Essential Aminos are strictly for laboratory and research professional use only. They are not approved for human or animal use nor consumption by the Food and Drug Administration (FDA). These products should not be used for any form of in vivo experimentation or for any other non-laboratory purpose. Any violation or indication of human or animal use will result in immediate removal from being able to purchase products in the future. By purchasing these products, you acknowledge that they will be used exclusively within a controlled and qualified research environment.
Certificate of Analysis
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