Side-by-Side Comparison
Essential Vitamins & Minerals
Calcium (Elemental Ca) vs. Vitamin B5 (Pantothenic Acid)
Comparing 2 standards across 10 specifications. 10 key differences identified.
Comparing:
Calcium (Elemental Ca)
Vitamin B5 (Pantothenic Acid)
Calcium is the most abundant mineral in the human body (1.0–1.2 kg), with 99% sequestered in hydroxyapatite bone lattice and 1% tightly regulated at 8.5–10.5 mg/dL serum for cardiac contractility, nerve signaling, and blood coagulation. Adult RDA is 1,000–1,200 mg/day.
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).
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nutrient Type
|
Essential Macromineral | Water-Soluble Amide Vitamin |
|
Tolerable Upper Limit (UL)
|
2,500 mg / day (Adults 19–50) / 2,000 mg / day (Adults 51+) (Avoid nephrolithiasis / vascular calcification) | None Established (Extremely low toxicity) |
|
Chemical Forms
|
Calcium Carbonate (40% elemental Ca / requires stomach acid), Calcium Citrate (21% elemental Ca / acid-independent), Hydroxyapatite | D-Pantothenic Acid, Calcium Pantothenate (Stable synthetic), Pantethine (Active dimer) |
|
Primary Biological Function
|
Hydroxyapatite bone/dental structure [Ca10(PO4)6(OH)2], Troponin-C actin-myosin muscle contraction, Factor IV blood clotting cascade, Exocytosis neurotransmitter release | Coenzyme A (CoA) backbone (Acetyl-CoA, Succinyl-CoA), Acyl Carrier Protein in fatty acid synthase, Steroid hormone synthesis |
|
Deficiency Condition
|
Osteoporosis, Osteopenia, Rickets (children), Tetany (Trousseau's and Chvostek's signs of hypocalcemia) | Extremely rare ('Pantothen' = everywhere in foods); 'Burning Feet' syndrome (paresthesia), fatigue |
|
Top Whole Food Sources
|
Parmigiano-Reggiano, Sharp Cheddar, Whole Milk, Sardines with bones, Kale, Tofu (Calcium-set), Fortified Plant Milk | Shiitake Mushrooms, Beef Liver, Chicken Liver, Sunflower Seeds, Egg Yolk, Hass Avocado, Whole Milk |
|
Adult RDA / RDI
|
1,000 mg / day (Men 19–70, Women 19–50) / 1,200 mg (Women 51+, Men 71+) | — |
|
Parathyroid Hormone (PTH) Homeostasis
|
Serum Ca2+ drop triggers PTH secretion, stimulating renal 1-alpha-hydroxylase to produce active Calcitriol (1,25-OH-D3) and osteoclast bone resorption | — |
|
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 |
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