Magnesium for Sleep — What Actually Works

Why Magnesium Matters for Sleep

Magnesium activates GABA receptors and helps regulate melatonin production. Without adequate magnesium, the nervous system stays in a state of low-level alert that makes falling asleep harder.

The Form Problem

Not all magnesium is the same. Magnesium oxide has poor bioavailability. Magnesium glycinate absorbs significantly better and carries an additional benefit: glycine itself has been shown in clinical studies to improve sleep quality. Magnesium citrate is a reasonable middle option.

Dose and Timing

Most studies showing sleep benefits used 200–400 mg of elemental magnesium taken 30–60 minutes before bed. Elemental is the key word — a supplement listing 1,000 mg of magnesium glycinate contains roughly 140 mg of elemental magnesium because glycine makes up the rest. Read labels carefully.

What the Research Shows

A 2012 randomized controlled trial in the Journal of Research in Medical Sciences found magnesium supplementation improved sleep time, sleep efficiency, and early morning awakening in older adults. A 2017 review in Nutrients confirmed the relationship between low magnesium status and sleep disturbance.

Food Sources

Dark leafy greens, pumpkin seeds, black beans, and dark chocolate are the highest-density dietary sources. One ounce of pumpkin seeds delivers roughly 150 mg. Supplementation fills the gap, it does not replace food.

The Genesee Recovery Stack

Our bison protein bars are built around whole-food inputs, not seed oils or synthetic fillers. Adequate protein before bed — particularly glycine-rich protein — supports the same GABA pathways. The Genesee Founders 250 program at $299 per year gives early members a locked price and first access to recovery product extensions.