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Supplements/Mineral

Magnesium Glycinate

Bisglycinate chelate form of magnesium — gentle, well-absorbed, ideal for sleep.

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Overview

Bisglycinate chelate form of magnesium — gentle, well-absorbed, ideal for sleep.

Natural sources
  • Chelated magnesium
Common forms
  • Magnesium bisglycinate

Mechanism of action

Glycine chelation improves absorption and provides additional calming glycine.

Pathways
  • · NMDA modulation (glycine)

Effects on the body

Supports
Sleep quality
Decreases
Muscle cramping

Organ system effects

Brain & CNS

Sleep-supportive Mg form.

Evidence-based benefits

Improves sleep & reduces cramps

Moderate evidence

Potential side effects

Common
  • · Magnesium Glycinate is generally well-tolerated at evidence-based doses
  • · Mild GI discomfort (nausea, loose stools, or bloating) possible at higher intakes
  • · Headache or transient fatigue reported by a small fraction of users
Rare
  • · Allergic or hypersensitivity reaction (rash, itching, swelling)
  • · Sleep disturbance if taken late in the day
Serious
  • · Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing

Drug interactions

Prescription medications (general)
Always disclose Magnesium Glycinate use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.
minor

Safety & non-supplemental interactions

Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

Avoid / monitor with these medications
  • ·Alcohol, benzodiazepines, opioids, sedating antihistamines (additive CNS depression)

Supplement interactions

Pairs well with
  • Magnesium glycinate
    Complementary GABAergic calming and improved sleep architecture.
  • L-theanine
    Reduces sleep latency without sedation.
  • Ashwagandha
    Adaptogenic HPA-axis modulation.
Avoid combining with

No specific avoidances listed.

Dosing & bioavailability

Typical dose
200–400 mg elemental, evening
Best form
Most evidence is based on the magnesium bisglycinate form.
Timing
Consistent daily timing recommended; split larger doses if GI tolerance is a concern.
With food?
Either with or without food.

Where to buy

Affiliate links — we may earn a commission at no extra cost to you. Amazon code supplementsch-20 is auto-applied at checkout. We don't endorse specific brands; verify third-party testing (USP, NSF, Informed Sport) before purchase.

Scientific evidence8Show studies
RCTJ Res Med Sci · 2012

Magnesium glycinate and sleep quality in older adults

Abbasi B, et al.

8-week RCT of magnesium in elderly insomniacs.

Key findings

Improved insomnia severity, sleep efficiency, and serum cortisol.

Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — Improves sleep & reduces cramps

Live PubMed search

Live results for "Magnesium Glycinate Improves sleep & reduces cramps" across the PubMed/MEDLINE peer-reviewed index.

Key findings

Opens current human and preclinical literature matching Magnesium Glycinate and "Improves sleep & reduces cramps". Filter by RCT, meta-analysis, or year on the results page.

Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — randomized controlled trial

Live PubMed search

Live results for "Magnesium Glycinate randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

Key findings

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Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — meta-analysis

Live PubMed search

Live results for "Magnesium Glycinate meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

Key findings

Opens current human and preclinical literature matching Magnesium Glycinate and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — pharmacokinetics

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Live results for "Magnesium Glycinate pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

Key findings

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Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — safety adverse events

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Live results for "Magnesium Glycinate safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

Key findings

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Open study
Systematic reviewPubMed (NLM) · 1970

PubMed: Magnesium Glycinate — dose response

Live PubMed search

Live results for "Magnesium Glycinate dose response" across the PubMed/MEDLINE peer-reviewed index.

Key findings

Opens current human and preclinical literature matching Magnesium Glycinate and "dose response". Filter by RCT, meta-analysis, or year on the results page.

Open study
Systematic reviewGoogle Scholar · 1970

Google Scholar: Magnesium Glycinate — clinical evidence

Live Scholar search

Cross-database citation index for Magnesium Glycinate as it relates to "clinical evidence".

Key findings

Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

Open study
Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.

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