Magnesium L-Threonate
Why we made this
Developed at MIT specifically to cross the blood-brain barrier. If you want magnesium for cognitive rather than muscular effects, this is the form.
3 capsules in the evening (2 hours before bed).
Cognitive support, age-related memory, focus stacks.
What's inside
Magtein® magnesium L-threonate.
Where it comes from
Magtein — the only patented, clinically studied form of magnesium L-threonate.
Stack it with
4.8 out of 5 · 8 verified reviews
Third-party COA on the website sold me. Magnesium L-Threonate has become part of my morning stack — no chalky aftertaste and no bloat.
I train five days a week and recovery has been sharper. Ingredient list reads like a dietitian wrote it, which is basically the case.
Flavor is subtle in the best way. I'd love a family-size option of Magnesium L-Threonate.
Tried AG1 and Ritual before this. Rivergrove wins on transparency and taste. Subscribe-and-save makes it a no-brainer.
She specifically flagged the sourcing standards. I've been on it three months and my labs improved at my last check-in.
Mixes clean in water, no gritty settle. Packaging is a little bulky but I'll take it for the quality.
I'm picky about what goes in my body during pregnancy planning. Rivergrove passed my OB's review.
You get what you pay for. Magnesium L-Threonate is not the cheapest option but the quality is obvious after two weeks.
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