Side-by-Side Comparison
Essential Vitamins & Minerals
Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin C (L-Ascorbic Acid)
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
Vitamin B6 (Pyridoxal 5'-Phosphate / PLP)
Vitamin C (L-Ascorbic Acid)
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.
Vitamin C is a water-soluble electron donor and antioxidant essential for collagen proline/lysine hydroxylation, non-heme iron absorption, and immune phagocyte function. Adult RDA is 90mg (men) / 75mg (women), with a Tolerable Upper Limit of 2,000mg/day.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nutrient Type
|
Water-Soluble Pyridine Vitamin | Water-Soluble Vitamin |
|
Adult RDA / RDI
|
1.3 mg / day (Adults 19–50) / 1.7 mg (Men 51+) / 1.5 mg (Women 51+) | 90 mg (Men) / 75 mg (Women) (+35mg for smokers) |
|
Tolerable Upper Limit (UL)
|
100 mg / day (US FDA/NIH) / 12 mg / day (EFSA, revised down from 25mg in 2023) (Avoid sensory peripheral neuropathy) | 2,000 mg / day (Avoid osmotic diarrhea) |
|
Chemical Forms
|
Pyridoxal 5'-Phosphate (PLP, active coenzyme), Pyridoxine HCl, Pyridoxamine | L-Ascorbic Acid, Sodium Ascorbate, Calcium Ascorbate |
|
Primary Biological Function
|
Transamination / deamination of amino acids, Serotonin / Dopamine / GABA synthesis from amino acids, Glycogen phosphorylase cofactor, Heme synthesis | Prolyl/Lysyl Hydroxylase cofactor (Collagen), ROS scavenger, Carnitine synthesis |
|
Deficiency Condition
|
Microcytic sideroblastic anemia, Seborrheic dermatitis, Cheilosis, Peripheral neuropathy, Convulsions | Scurvy (Collagen breakdown, capillary fragility, impaired wound healing) |
|
Top Whole Food Sources
|
Chickpeas, Wild Salmon, Yellowfin Tuna, Beef Liver, Chicken Breast, Russet Potatoes, Bananas | Red Bell Pepper, Strawberries, Citrus, Kiwi, Broccoli, Brussels Sprouts |
|
Neurotoxicity Threshold
|
Chronic megadosing of Pyridoxine HCl (>200–500mg/day) causes reversible sensory neuropathy due to competitive inhibition of tissue PLP | — |
|
Thermolability
|
— | Highly heat- and oxygen-sensitive (degrades rapidly with prolonged boiling) |
Other Alternatives to Compare
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Calcium (Elemental Ca) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Iodine (Elemental I) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Iron (Heme & Non-Heme) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Magnesium (Elemental Mg) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Potassium (Elemental K) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Selenium (Elemental Se) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Sodium (Elemental Na) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin A (Retinol & Beta-Carotene) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B1 (Thiamine) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B12 (Cobalamin) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B2 (Riboflavin) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B3 (Niacin / Nicotinic Acid & Nicotinamide) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B5 (Pantothenic Acid) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B7 (Biotin / Vitamin H) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin B9 (Folate & Folic Acid) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin D3 (Cholecalciferol) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin E (d-Alpha-Tocopherol) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Vitamin K1 (Phylloquinone) →
Compare Vitamin B6 (Pyridoxal 5'-Phosphate / PLP) vs. Zinc (Elemental Zn) →