Most people know magnesium for muscle relaxation and sleep. The problem is that common forms — oxide, citrate, glycinate — don't raise brain magnesium levels particularly well.

Magnesium L-threonate (Magtein) was developed specifically to address that, and it's the form used in the cognitive research.

What it supports

• Brain magnesium levels — the reason this form exists at all
• Memory and learning — magnesium plays a role in synaptic plasticity
• Sleep quality, which is upstream of everything cognitive
• A calm nervous system without sedation

How to take it

Usually taken in the evening, since it supports sleep as well as cognition. If you already take magnesium for cramps or sleep, this is a different job — the threonate form is about getting magnesium where your neurons are.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Talk to a qualified healthcare professional before starting any new supplement, particularly if you are pregnant, nursing, taking medication or managing a health condition.