Mg-L-threonate, MgT · Evidence-based safety and harm-reduction overview.
| Also known as | Mg-L-threonate, MgT |
| Category | Nootropic |
| elemental_content | Product-dependent; 144 mg elemental per 2g typical |
| bbb_transport | Animal evidence supports CNS penetration; human proof limited |
| patent_status | Patent-protected formulation until early 2020s |
| US legal status | Dietary supplement, unregulated; US legal to buy and use |
Magnesium chelated with L-threonate; formulated to cross blood-brain barrier and support synaptic plasticity. L-threonate is a metabolite of vitamin C that may enhance magnesium transport into CNS.
L-threonate may enhance magnesium transport across blood-brain barrier through specific transporter mechanisms. Magnesium acts as NMDA receptor antagonist and cofactor for synaptic protein kinases. Enhanced CNS magnesium may support long-term potentiation and memory consolidation.
Developed in early 2000s as patented formulation to improve magnesium brain bioavailability. L-threonate is vitamin C metabolite; combination explored for cognitive aging applications.
Some human studies show potential for cognitive support and sleep in older adults; mechanism of brain penetration not fully confirmed in humans. Limited but promising data in aging populations; healthy young adult data sparse.
Typical supplement dosing is 1000-2000 mg daily (elemental magnesium content varies by product). Human clinical trials employ 1500-2000 mg daily in divided doses.
This is general research/context information, not medical advice or a recommended protocol.
Often combined with vitamin D and calcium for mineral synergy. May stack with L-theanine for relaxation and focus enhancement.
Magnesium glycinate plus L-theanine. Well-tolerated magnesium with established cognitive support and fewer GI issues
See our recommended pickIf you are going to research a compound, verifying identity and purity is the single most protective step. Independent analytical testing and sterile-handling supplies reduce risk.
Compare testing optionsAnimal evidence supports CNS penetration; direct human proof is limited
L-threonate chelation may improve brain bioavailability; conventional magnesium is well-absorbed systemically
Possible but not recommended without medical guidance; monitor for hypermagnesemia symptoms
Sleep and cognitive effects may appear after 4-12 weeks if present; individual variation is high
Premium pricing reflects formulation; human evidence does not strongly support superiority over conventional magnesium
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