Potassium (Elemental K) vs. Vitamin B1 (Thiamine)
Comparing 2 standards across 10 specifications. 10 key differences identified.
Potassium is the primary intracellular cation (140 mEq/L intracellular vs 4 mEq/L extracellular), maintaining the cellular resting membrane potential via the Na+/K+-ATPase pump and regulating vascular tone. Adequate Intake (AI) is 3,400 mg (men) / 2,600 mg (women).
Vitamin B1 is a water-soluble pyrimidine/thiazole vitamin acting as the Thiamine Pyrophosphate (TPP) coenzyme in pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase, and transketolase. Adult RDA is 1.2 mg (men) / 1.1 mg (women) (no Upper Limit established).
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nutrient Type
|
Essential Macromineral / Major Intracellular Electrolyte | Water-Soluble Thiazole Vitamin |
|
Tolerable Upper Limit (UL)
|
None Established (Whole foods; healthy kidneys clear excess; renal impairment requires clinical restriction) | None Established (Rapid renal clearance of excess) |
|
Chemical Forms
|
Potassium Citrate, Potassium Chloride (KCl / Salt substitute), Potassium Gluconate | Thiamine Monophosphate, Thiamine Pyrophosphate (TPP / TDP, active coenzyme), Benfotiamine (Lipid-soluble synthetic) |
|
Primary Biological Function
|
Na+/K+-ATPase resting membrane potential (-70mV), Cardiac myocardial repolarization, Endothelial nitric oxide vasodilation (lowers blood pressure), Blunts sodium-induced fluid retention | Pyruvate dehydrogenase complex (Links glycolysis to Krebs cycle), Transketolase (Pentose Phosphate Pathway), Myelin neurotransmission |
|
Deficiency Condition
|
Hypokalemia (Serum K+ < 3.5 mmol/L): Cardiac arrhythmias (U-waves, ventricular tachycardia), Muscle weakness, Ileus, Hypertension | Beriberi (Wet beriberi: high-output heart failure; Dry beriberi: peripheral neuropathy), Wernicke-Korsakoff syndrome |
|
Top Whole Food Sources
|
Baked Russet Potato (with skin), Orange Sweet Potato, Spinach, Bananas, Atlantic Salmon, Black Beans, Hass Avocado, Coconut Water | Pork Tenderloin, Sunflower Seeds, Nutritional Yeast, Enriched Grains, Black Beans, Flaxseeds |
|
Adult Adequate Intake (AI)
|
3,400 mg / day (Men) / 2,600 mg / day (Women) (WHO Target: >3,510 mg/day) | — |
|
Dietary Sodium-to-Potassium Ratio
|
Ancestral human ratio was 1:4 (Na:K); modern Western diets average 2:1, significantly contributing to hypertension | — |
|
Adult RDA / RDI
|
— | 1.2 mg / day (Men) / 1.1 mg / day (Women) (+0.3mg during pregnancy) |
|
Thermolability & Alcohol Interaction
|
— | Degraded by alkaline pH and high heat cooking; alcohol blocks intestinal active ThTr-1 transport |