Comparison
Magnesium L-Threonate vs Alpha-Lipoic Acid
Magnesium L-Threonate
MIT-developed magnesium that crosses the blood-brain barrier. Shown to enhance synaptic density and reduce 'brain age'.
Alpha-Lipoic Acid
Universal antioxidant active in both lipid and aqueous environments. Supports mitochondrial function and AGE reduction.
| Field | Magnesium L-Threonate | Alpha-Lipoic Acid |
|---|---|---|
| Category | neuroprotective | neuroprotective |
| Dose range | 1000–2000mg | 300–600mg |
| Half-life | 6h | 1h |
| Onset | – | – |
| Evidence | EVIDENCEB | EVIDENCEA |
| Safety | ●●●●● | ●●●●○ |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 90 | 1900 |
The comparison in plain English
Auto-generated from dataMagnesium L-Threonate and Alpha-Lipoic Acid are both in the neuroprotective category respectively. Magnesium L-Threonate MIT-developed magnesium that crosses the blood-brain barrier. Alpha-Lipoic Acid Universal antioxidant active in both lipid and aqueous environments.
Bottom line
Magnesium L-Threonate (evidence B, safety 5/5) has a stronger evidence base than Alpha-Lipoic Acid (evidence A, safety 4/5). Magnesium L-Threonate has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Magnesium L-Threonate if
Magnesium L-Threonate is the better fit when your goal aligns with its mechanism (L-threonate is a sugar-acid carrier that uniquely enables magnesium to cross the blood-brain barrier in meaningful quantities, most oral magnesium forms (oxide, citrate, glycinate) raise serum magnesium but not central magnesium) and the dose range (1000–2000mg) suits your protocol. Half-life is 6h.
Choose Alpha-Lipoic Acid if
Alpha-Lipoic Acid is the better fit when your goal aligns with its mechanism (A 'universal' antioxidant, uniquely active in both lipid (cell membrane) and aqueous (cytoplasm) environments because of its dithiol functional group) and the dose range (300–600mg) suits your protocol. Half-life is 1h.