Magnesium Glycinate
Magnesium Bisglycinate
Magnesium glycinate (also called magnesium bisglycinate) is magnesium bonded to two glycine molecules via chelation. This chelated form is widely considered the best-tolerated and most bioavailable oral magnesium supplement, with minimal laxative effect compared to cheaper forms like magnesium oxide or citrate. Magnesium is the fourth most abundant mineral in the body and is required as a cofactor for >300 enzymatic reactions including ATP synthesis, DNA replication, protein synthesis, muscle contraction, and nervous system function.
Starting dose. 200-400mg — Elemental magnesium daily
Best taken in the evening 30-60 minutes before bed for sleep support. Can be split to AM + PM if higher doses needed. Take with or without food - glycinate is well-tolerated either way.
Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.
How it works
Magnesium is a cofactor for over 300 enzymes, including all enzymes that use or produce ATP (since ATP requires Mg binding to be biologically active). It is essential for oxidative phosphorylation, glycolysis, protein and nucleic acid synthesis, and second messenger signaling (cAMP, cGMP).
In the nervous system, magnesium functions as a voltage-dependent blocker of the NMDA glutamate receptor, limiting excitatory neurotransmission. This calming effect is why magnesium deficiency presents with anxiety, hyperreactivity, and poor sleep. Magnesium also enhances GABA receptor function, supporting inhibitory neurotransmission.
In the cardiovascular system, magnesium acts as a natural calcium channel blocker, promoting vasodilation, reducing vascular resistance, and stabilizing cardiac rhythm. It improves endothelial function and modulates inflammatory signaling. Magnesium deficiency is associated with arrhythmias, hypertension, and increased cardiovascular risk.
The glycinate carrier enhances absorption via the amino acid transport pathway (dipeptide transporters) rather than competing with other divalent cations (calcium, zinc) at magnesium-specific transporters. This bypasses the saturable, often-limiting mineral absorption pathway and achieves better bioavailability. Glycine itself contributes calming effects via inhibitory glycine receptors in the spinal cord and brainstem.
What to expect
Nights 1-7: Sleep quality improvement, muscle relaxation.
Evidence
Claims we could not support
No abstract we checked supports these for this molecule at this route. That is not the same as saying they are false — it marks where the evidence is missing.
Dose/route: 200-400mg elemental magnesium daily; Oral; Once in evening, or split AM/PM. No checked live PubMed abstract verified this exact displayed dose, route, and frequency for the same molecule/formulation and relevant population.
Mechanism: Magnesium is a cofactor for over 300 enzymes, including all enzymes that use or produce ATP (since ATP requires Mg binding to be biologically active). It is essential for oxidative phosphorylation, glycolysis, protein and nucleic acid synthesis, and second messenger signaling (cAMP, cGMP).. No checked live PubMed abstract provided an exact-molecule/formulation sentence supporting this source-JSON mechanism claim.
Primary safety claim: Loose stools or diarrhea (uncommon with glycinate, but possible at >500mg elemental in single dose). No checked live PubMed abstract directly verified this source-JSON safety claim at the displayed formulation, route, and regimen.
Interactions & stacking
Two different questions: what is documented about running these together, and what is documented about drawing them into the same syringe. A good pharmacological partner can still have to be pinned separately.
Documented together
Keep separate
Check any specific pair in the Stack & Interaction Checker, which answers both questions separately. Absence of a documented conflict is not evidence of safety.
Pharmacokinetics
Plasma. Total body magnesium turnover is weeks to months (bone stores are slow-exchanging).
Oral.
Plasma clearance 24-48 hours. Tissue repletion takes 4-12 weeks.
Glycinate: ~40% absorption (amino acid pathway). Malate: ~35-40%. Citrate: ~25-30%. Oxide: ~4%. Chloride: ~12%. Food interactions vary - glycinate relatively independent of food.
Acute effects (sleep, muscle relaxation): 6-12 hours. Chronic repletion effects build over 2-12 weeks of consistent dosing.
Primarily renal. Homeostatic regulation via PTH and vitamin D. Kidney threshold determines excretion rate.
Storage. Store at room temperature (20-25C) in a cool, dry place. Keep container tightly closed to prevent moisture absorption (magnesium salts are hygroscopic). Capsules shelf-stable 2+ years.
Regulatory status
Classified as a dietary supplement in the US. No prescription required. Widely available. IV magnesium is used in hospitals for eclampsia, severe asthma, and arrhythmias.
Put it to work
Calculate, log & track
Open Magnesium Glycinate straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.
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The guide & community
The complete Magnesium Glycinate walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.
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