Confident dosing starts with knowing your numbers. Here's the exact drop-to-milligram breakdown across every Lugol's Solution strength we carry.

The Short Answer

Each concentration of Lugol's Solution delivers a specific, predictable amount of iodine/iodide per drop — from about 1.25mg per drop at 2% up to roughly 12.5mg per drop at 20%. Knowing your bottle's exact conversion is what makes precise, confident dosing possible.

Drop-to-Milligram Reference

These are standard approximations for reference — for a target dose tailored to you, a conversation with your healthcare provider is always the confident way to fine-tune the exact numbers.

Frequently Asked Questions

How much iodine is in one drop of Lugol's Solution?

It depends on the concentration — anywhere from about 1.25mg per drop at 2% up to about 12.5mg per drop at 20%. See the table above for the full breakdown.

Why does the mg-per-drop amount matter?

Knowing this number is what lets you dose with precision and confidence, rather than guessing — it's the foundation of a well-managed routine.

Which strength gives me the most control over my dose?

Lower concentrations like 2% give you the finest control, since each drop represents a smaller increment — a great reason many people start there.

Shop Lugol's Solution — the traditional, trusted way people have supported their iodine intake for over 200 years.

This article is for general educational purposes only and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease, and is not a substitute for advice from a qualified healthcare provider — especially if you are pregnant, nursing, taking thyroid medication, or managing a thyroid condition.

Arjun Malhotra covers dosing math and concentration conversions for the Iodine Journal.

This article is part of our complete guide to Lugol's Solution usage and protocols.