Pure TheraPro MagPro L-Threonate

Magnesium L-threonate was developed specifically to cross the blood-brain barrier more effectively than common forms like glycinate, citrate, or oxide. Research originating from MIT scientists, including Dr. Guosong Liu, suggested that L-threonate may support synaptic density and cognitive function in ways that other magnesium salts do not.

Pure TheraPro formulations are marketed as free of magnesium stearate and common artificial fillers, aligning with the brand's clean-label positioning. However, you should always check the current Supplement Facts panel on the product packaging, as ingredient lists can change between production runs.

Magnesium L-threonate typically yields a relatively low amount of elemental magnesium per dose compared to denser forms like magnesium oxide, which is by design since the focus is on brain bioavailability rather than total magnesium delivery. You should verify the exact milligram count of elemental magnesium on the product label.

Many users stack L-threonate for cognitive benefits with another magnesium form like glycinate for relaxation, since threonate provides relatively little elemental magnesium per dose. Just keep your total daily magnesium intake within the NIH-recommended tolerable upper intake level of 350 mg of supplemental magnesium per day for most adults.