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IODIDE

Iodide ion: Main Effects & Top 5

Published May 5, 2026·1min read

Iodide ion (I⁻) at ≥ 10 mg/kg classifies the spring as an "iodine spring." Common in non-volcanic springs, it delivers antibacterial and cholesterol-lowering effects.

National maximum
3.9 mg/kg
@
Shijo Kawaramachi Onsen Soraniwa Terrace Kyoto Bettei
Table of Contents
  1. What is Iodide ion?
  2. Main Effects
  3. Iodide ion Top 5 Hot Springs

What is Iodide ion?

Iodide ion (I⁻) at ≥ 10 mg/kg classifies the spring as an "iodine spring." Common in non-volcanic springs, it delivers antibacterial and cholesterol-lowering effects.

Main Effects

  • Total cholesterol reduction (drinking)
  • Caution advised for hyperthyroidism
  • Characteristic yellow-brown tint on air exposure

Iodide ion Top 5 Hot Springs

Top 5 hot springs registered on this site with the highest content.

* Top 5 among onsen analysis records registered in this app

References

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