Side-by-Side Comparison
Essential Vitamins & Minerals
Iodine (Elemental I) vs. Vitamin B5 (Pantothenic Acid)
Comparing 2 standards across 10 specifications. 10 key differences identified.
Comparing:
Iodine (Elemental I)
Vitamin B5 (Pantothenic Acid)
Iodine is an essential halogen trace element required exclusively as an essential structural component of thyroid hormones thyroxine (T4) and triiodothyronine (T3), regulating metabolic rate, cellular respiration, and fetal neurodevelopment. Adult RDA is 150 µg, with an Upper Limit of 1,100 µg/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 Trace Halogen Element | Water-Soluble Amide Vitamin |
|
Tolerable Upper Limit (UL)
|
1,100 µg / day (Avoid Wolff-Chaikoff thyroid autoregulatory shutdown) | None Established (Extremely low toxicity) |
|
Chemical Forms
|
Iodide (I- / Potassium Iodide KI, Potassium Iodate KIO3 in iodized salt), Molecular Iodine | D-Pantothenic Acid, Calcium Pantothenate (Stable synthetic), Pantethine (Active dimer) |
|
Primary Biological Function
|
Constituent of Thyroxine (T4, 4 iodine atoms / 65% by weight) and Triiodothyronine (T3, 3 iodine atoms / 59% by weight) | Coenzyme A (CoA) backbone (Acetyl-CoA, Succinyl-CoA), Acyl Carrier Protein in fatty acid synthase, Steroid hormone synthesis |
|
Deficiency Condition
|
Endemic Goiter (Compensatory thyroid enlargement), Congenital Hypothyroidism / Cretinism (Permanent neurodevelopmental impairment), Maternal miscarriages | Extremely rare ('Pantothen' = everywhere in foods); 'Burning Feet' syndrome (paresthesia), fatigue |
|
Top Whole Food Sources
|
Kombu Kelp, Nori Seaweed, Atlantic Cod, Eastern Oysters, Iodized Table Salt, Greek Yogurt, Dairy Milk, Eggs | Shiitake Mushrooms, Beef Liver, Chicken Liver, Sunflower Seeds, Egg Yolk, Hass Avocado, Whole Milk |
|
Adult RDA / RDI
|
150 µg / day (220 µg pregnancy / 290 µg lactation) | — |
|
Iodized Salt Public Health Impact
|
Universal salt iodization (45–75 mg KI / kg salt) is hailed as one of the greatest global public health achievements, eradicating cretinism worldwide | — |
|
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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