Side-by-Side Comparison
Essential Vitamins & Minerals
Sodium (Elemental Na) vs. Vitamin B3 (Niacin / Nicotinic Acid & Nicotinamide)
Comparing 2 standards across 11 specifications. 11 key differences identified.
Comparing:
Sodium (Elemental Na)
Vitamin B3 (Niacin / Nicotinic Acid & Nicotinamide)
Sodium is the principal extracellular cation (135–145 mEq/L extracellular), maintaining extracellular fluid volume, plasma osmolality, and driving secondary active transport. Adequate Intake (AI) is 1,500 mg/day, with a Chronic Disease Risk Reduction (CDRR) limit of 2,300 mg/day.
Vitamin B3 comprises nicotinic acid and nicotinamide, precursors to NAD+ and NADP+ coenzymes central to over 400 enzymatic cellular reactions and DNA repair by PARP enzymes. Adult RDA is 16 mg NE (men) / 14 mg NE (women), with a Tolerable Upper Limit of 35 mg/day.
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nutrient Type
|
Essential Macromineral / Major Extracellular Electrolyte | Water-Soluble Pyridine Vitamin |
|
Chemical Forms
|
Sodium Chloride (NaCl, 39.3% Na by weight), Monosodium Glutamate (MSG, 12.3% Na), Sodium Bicarbonate (27.4% Na) | Nicotinamide (Niacinamide), Nicotinic Acid, Nicotinamide Riboside (NR), Nicotinamide Mononucleotide (NMN) |
|
Primary Biological Function
|
Extracellular fluid osmolality maintenance, Blood pressure / volume homeostasis, Action potential depolarization (voltage-gated Na+ channels), SGLT1 glucose cotransport | NAD+/NADH redox electron carrier in glycolysis/TCA cycle, NADP+/NADPH reductive biosynthesis, PARP-1 DNA repair, Sirtuin activation |
|
Deficiency Condition
|
Hyponatremia (Serum Na+ < 135 mmol/L): Cerebral edema, Nausea, Muscle cramps, Seizures, Coma (often exercise-associated from over-hydration) | Pellagra ('The 4 Ds': Diarrhea, Dermatitis on sun-exposed skin, Dementia, Death) |
|
Top Whole Food Sources
|
Table Salt (NaCl), Cured Bacon, Soy Sauce, Parmigiano-Reggiano, Pickles, Olives, Bread (Processed food accounts for 70% of intake) | Chicken Breast, Canned Tuna, Salmon, Beef, Turkey, Peanuts, Brown Rice, Shiitake Mushrooms |
|
Adult Adequate Intake (AI)
|
1,500 mg / day (Equal to 3.8 g table salt NaCl) | — |
|
Chronic Disease Limit (CDRR)
|
2,300 mg / day (Equal to 5.8 g table salt / 1 level teaspoon) | — |
|
Renal Renin-Angiotensin System
|
Juxtaglomerular apparatus senses low tubular sodium/pressure, secreting renin to stimulate aldosterone and renal Na+ reabsorption | — |
|
Adult RDA / RDI
|
— | 16 mg NE / day (Men) / 14 mg NE / day (Women) (NE = Niacin Equivalents) |
|
Tolerable Upper Limit (UL)
|
— | 35 mg / day (Supplemental nicotinic acid; prevents prostaglandin flushing) |
|
Tryptophan Biosynthesis Pathway
|
— | 60 mg of dietary amino acid L-tryptophan converts endogenously into 1 mg of niacin (1 NE) |
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