L-threonate (often Magtein) is pitched for brain magnesium. Elemental magnesium per capsule is low, so it is a poor first choice for cramps or constipation. Glycinate remains the practical default; this is a specialty form.
Supplements
Limited evidence
Magnesium L-Threonate
The expensive magnesium sold for the brain, not the bowel.
How to use
Follow the label (often ~2 g Magtein, split morning and evening).
Details
- Ingredients
- Magnesium L-threonate
- Benefits
- Cognitive support (early data), Evening wind-down
- Dosage
- As labeled; elemental Mg is modest
- When to take
- Evening, Before bed
- Side effects
- Drowsiness or headache in some users at the start.
- Scientific evidence
- Human data is smaller than for magnesium in general; the brain-delivery story is plausible, not settled.
- Form
- Capsule
- Third-party tested
- Yes
Editorial rating ★ 3.7
Interesting, pricey, under-dosed as a magnesium source. Do not buy it to fix a mineral gap.
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