# item.guide
Side-by-Side Comparison Essential Vitamins & Minerals

Magnesium (Elemental Mg) vs. Vitamin B5 (Pantothenic Acid)

Comparing 2 standards across 10 specifications. 10 key differences identified.

Comparing:
Magnesium (Elemental Mg)
Vitamin B5 (Pantothenic Acid)

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).

View full Magnesium (Elemental Mg) spec sheet →

Vitamin B5 is an essential water-soluble vitamin required for the synthesis of Coenzyme A (CoA) and acyl carrier protein (ACP), vital in fatty acid synthesis and beta-oxidation. Adequate Intake (AI) is 5.0 mg/day (no Upper Limit established).

View full Vitamin B5 (Pantothenic Acid) spec sheet →

Specification Comparison Table

10 Parameters
Parameter / Spec
Nutrient Type
Essential Macromineral Water-Soluble Amide Vitamin
Tolerable Upper Limit (UL)
350 mg / day (From supplemental forms only; no limit on whole foods) None Established (Extremely low toxicity)
Chemical Forms
Magnesium Glycinate (Chelate), Citrate, Malate, Oxide, L-Threonate D-Pantothenic Acid, Calcium Pantothenate (Stable synthetic), Pantethine (Active dimer)
Primary Biological Function
Mg-ATP complex cofactor (>300 enzymes), NMDA receptor gatekeeper, Protein synthesis, Muscle relaxation Coenzyme A (CoA) backbone (Acetyl-CoA, Succinyl-CoA), Acyl Carrier Protein in fatty acid synthase, Steroid hormone synthesis
Deficiency Condition
Muscle cramps, Tremors, Ventricular arrhythmias, Insulin resistance, Insomnia Extremely rare ('Pantothen' = everywhere in foods); 'Burning Feet' syndrome (paresthesia), fatigue
Top Whole Food Sources
Pumpkin Seeds, Hemp Hearts, Chia Seeds, Almonds, Spinach, Black Beans, Dark Chocolate Shiitake Mushrooms, Beef Liver, Chicken Liver, Sunflower Seeds, Egg Yolk, Hass Avocado, Whole Milk
Adult RDA / RDI
400 – 420 mg / day (Men) / 310 – 320 mg / day (Women)
Cellular Distribution
99% intracellular (60% bone, 39% skeletal muscle, <1% serum)
Adult Adequate Intake (AI)
5.0 mg / day (6.0mg pregnancy, 7.0mg lactation)
Thermal Processing Losses
20–50% lost during meat canning, boiling, and flour milling refining