Magnesium glycinate
One trial. A small effect.
Grade B: Some human proof
Small, early or mixed results in people.
The grade is for the use people talk about, not for every use. Filed under: Sleep and stress.
How it works
Magnesium bound to the amino acid glycine.
How it was given in studies
By mouth. In the trials people swallowed it as a capsule, tablet, powder or drink.
This is what the studies did. It is not a how-to.
What studies saw
In a trial of 155 adults with poor sleep, an insomnia score fell 3.9 points, against 2.3 on placebo, after 4 weeks. The effect was small.
The trade-off
One trial. A 2026 review of magnesium for insomnia found the evidence inconsistent.
When it showed up, in studies
A small drop in an insomnia score by week 4.
Sources
Put this grade on your site
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Keep going
We show what studies found. We never tell you what to take. Doses vary by study. Check the sources and talk to a doctor.