MINERAL · MATERIA №10
Magnesium Glycinate
The mineral that lets the body actually rest.
- Family
- mineral
- Origin
- Mineral, chelated to glycine
- Format
- Capsule or powder
- Best taken
- Evening
Magnesium is one of the most common deficiencies in modern diets — soil depletion, processing, and stress all reduce intake or accelerate loss.
Glycinate is the form bound to the amino acid glycine, which improves absorption and adds a mild calming effect of its own.
How it works in the body
Magnesium is a cofactor in more than three hundred enzymatic reactions. It modulates the NMDA receptor and supports GABA, which is partly why it helps the nervous system downshift at night.
What you can expect
Restorative sleep
Quietens the nervous system enough to fall asleep cleanly.
Good for: sleep · stress
Muscle relaxation
Eases tension after training or long screen days.
Good for: recovery
04 — PROTOCOL
200–400 mg of elemental magnesium glycinate in the evening, with or without food.
05 — SOURCING
Glycinate (also labelled bisglycinate) is the gentlest, best-absorbed form for daily use. Avoid magnesium oxide for anything beyond a laxative effect.
06 — CAUTION
High doses can cause loose stools; reduce dose if so. People with kidney disease should consult a clinician.
What the studies say
Magnesium glycinate (bisglycinate) is the form best tolerated for sleep and stress because the glycine moiety is itself a sleep-supportive amino acid. Trial evidence supports modest improvements in sleep quality and onset, especially in adults with insufficient intake or insomnia.
Honest caveatEffect sizes are modest. Magnesium is most effective when baseline intake is low — supplementing already-replete adults shows smaller benefit.
- 01META-ANALYSIS
Oral magnesium supplementation for insomnia in older adults: a systematic review & meta-analysis
Mah J, Pitre T · BMC Complementary Medicine and Therapies · 2021
“Magnesium supplementation was associated with a modest but statistically significant reduction in sleep onset latency and improvement in sleep time in older adults with insomnia.”
Plain EnglishOlder adults with insomnia fall asleep faster and sleep slightly longer on magnesium than placebo.
- 02RCT
Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomised, Placebo-Controlled Trial
Schuster J, Cycelskij I, Lopresti A, Hahn A · Nature and Science of Sleep · 2025
“Daily magnesium bisglycinate improved subjective sleep quality and reduced sleep complaints over the trial period compared with placebo in healthy adults reporting poor sleep.”
Plain EnglishIn healthy adults with poor sleep (not clinical insomnia), magnesium glycinate improved subjective sleep quality versus placebo.
All citations link to PubMed, PubMed Central or the original publisher. We do not reproduce full study text. References last verified by SACRAHAUS editorial.
08 — PRODUCTS
Products with Magnesium Glycinate
08 — PAIRS WELL WITH
Build the stack
SUPPORTS
What Magnesium Glycinate can help with
APPEARS IN THESE RITUALS
Honest answers
- Glycinate or citrate?
- Glycinate is calming and gentle. Citrate is more laxative — better for occasional use than nightly.
CONTINUE THE MATERIA