Side-by-Side Comparison
Essential Vitamins & Minerals
Magnesium (Elemental Mg) vs. Vitamin B6 (Pyridoxal 5'-Phosphate / PLP)
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
Magnesium (Elemental Mg)
Vitamin B6 (Pyridoxal 5'-Phosphate / PLP)
Magnesium is an essential macromineral required as an enzymatic cofactor in over 300 biochemical reactions including ATP synthesis, DNA replication, and neuromuscular transmission. Adult RDA is 400–420mg (men) / 310–320mg (women).
Vitamin B6 is a water-soluble pyridine vitamin acting via its active coenzyme Pyridoxal 5'-Phosphate (PLP) in over 140 amino acid decarboxylation, transamination, and neurotransmitter synthesis reactions. Adult RDA is 1.3–1.7 mg, with a Tolerable Upper Limit of 100 mg/day.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nutrient Type
|
Essential Macromineral | Water-Soluble Pyridine Vitamin |
|
Adult RDA / RDI
|
400 – 420 mg / day (Men) / 310 – 320 mg / day (Women) | 1.3 mg / day (Adults 19–50) / 1.7 mg (Men 51+) / 1.5 mg (Women 51+) |
|
Tolerable Upper Limit (UL)
|
350 mg / day (From supplemental forms only; no limit on whole foods) | 100 mg / day (US FDA/NIH) / 12 mg / day (EFSA, revised down from 25mg in 2023) (Avoid sensory peripheral neuropathy) |
|
Chemical Forms
|
Magnesium Glycinate (Chelate), Citrate, Malate, Oxide, L-Threonate | Pyridoxal 5'-Phosphate (PLP, active coenzyme), Pyridoxine HCl, Pyridoxamine |
|
Primary Biological Function
|
Mg-ATP complex cofactor (>300 enzymes), NMDA receptor gatekeeper, Protein synthesis, Muscle relaxation | Transamination / deamination of amino acids, Serotonin / Dopamine / GABA synthesis from amino acids, Glycogen phosphorylase cofactor, Heme synthesis |
|
Deficiency Condition
|
Muscle cramps, Tremors, Ventricular arrhythmias, Insulin resistance, Insomnia | Microcytic sideroblastic anemia, Seborrheic dermatitis, Cheilosis, Peripheral neuropathy, Convulsions |
|
Top Whole Food Sources
|
Pumpkin Seeds, Hemp Hearts, Chia Seeds, Almonds, Spinach, Black Beans, Dark Chocolate | Chickpeas, Wild Salmon, Yellowfin Tuna, Beef Liver, Chicken Breast, Russet Potatoes, Bananas |
|
Cellular Distribution
|
99% intracellular (60% bone, 39% skeletal muscle, <1% serum) | — |
|
Neurotoxicity Threshold
|
— | Chronic megadosing of Pyridoxine HCl (>200–500mg/day) causes reversible sensory neuropathy due to competitive inhibition of tissue PLP |
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