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Magnesium Glycinate

supplement MineralSleep & Circadian

A chelated form of magnesium bound to the amino acid glycine, chosen for good bioavailability and low GI laxative effect. Studied for repletion of magnesium status and, more tentatively, sleep quality.

Synonyms

Magnesium bisglycinate · chemical Magnesium diglycinate · chemical Mg glycinate · abbreviation 14783-68-7 · cas

Synonyms drive on-site search and are used to index ingested research papers and tweets to this page.

Safety

Contraindications

  • Significant renal impairment (risk of hypermagnesemia — consult a clinician)

Reported side effects

  • Loose stools at high doses (less than with magnesium oxide/citrate)

Doses refer to elemental magnesium. This page summarizes research and is not medical advice.

Protocols

GoalRouteDoseFrequencyTimingCycleEvidence
Maintain or restore magnesium status
Adults with low dietary magnesium
Split into two doses if GI tolerance is an issue.
oral200–400 mg1×/daywith-food, eveningContinuoushuman-rct
Subjective sleep support
Adults with sleep complaints
oral200–400 mg1×/daybefore-bed, with-foodContinuoushuman-observational

Evidence — Subjective sleep support

Claims & evidence

Effectively raises magnesium status in deficient or low-intake individuals.

Magnesium repletion positive human-rct

No indexed research or commentary linked yet.

May modestly improve subjective sleep quality, primarily in older or magnesium-deficient adults.

Sleep quality mixed human-observational

Notes

Overview

Glycinate chelation improves tolerability relative to inorganic magnesium salts, making it a common choice for daily repletion and evening use.

See the structured protocol table and cited research below.