Lugols Solution is part of The Iodine Protocol, and is a type of iodine that has been consumed since 1829. It is a deep red-ish/brown color and smells a bit like bleach to some people.

Lugols was first produced by a French physician Jean Lugol in 1829. Originally it was only produced in a 5% strength. But today it’s made in various strengths including 2%, 5% and even 46% etc. This % just makes it easier to adjust the amount of iodine in each drop.

What makes Lugols


A naturally occurring element essential for human growth and metabolic function. Its atomic number is 53 and its chemical symbol I. Elemental iodine is two iodine atoms bonded together, it’s molecular formula is I2.


The ion state of iodine, occurring when iodine bonds with another element, such as potassium. In this form, iodine can be ingested or applied topically.

Why does Lugols contain two types of iodine?

When we consume both forms, our body makes use of them in different areas. Our thyroid seems to enjoy Potassium Iodide form whereas breasts, ovaries and prostate seem to prefer the Iodine(I2) form.

Lugols is most commonly used

2% Lugols is the most common Iodine for beginners.

The only other commonly recommended formulation of iodine is SSKI because it is clear, making it a bit easier to apply transdermal. SSKI is Super Saturated Potassium Iodide, and potassium iodide is one of the ingredients of Lugols.

The strength % situation

Lugols comes in different strengths.

This strength can be looked at the same way we see a strong or weak glass of alcohol. Its the same amount of liquid, but a lower strength drink may get us tipsy as a stronger strength drink may knock us on our butt.

Or the sweetness of a cake. We get the same size bite of cake, but a cake with more sugar, tastes much sweeter than the same bite of cake that had less sugar used in it’s creation.

Lugols is 1 part Elemental Iodine(I2) and 2 parts Potassium Iodide and water. No matter what the strength is, it’s always 1 part of I2, 2 parts of Potassium Iodide. The strength changes as the ratio of water vs the total of both forms of iodine.

Lugols solution/recipe gained popularity because it allows us to suspend more iodine into a usable form. Some weird chemistry comes into play and causes only certain amounts to remain stable(mixed). This is where we get a handful of common strengths like 2, 4, 5, 23, 46 etc. Those strengths just happen to be ratios that worked, but remember, all of them are still 1 part I2 to 2 parts Potassium Iodide, anything outside of that 1:2 ratio of those two ingredients, is not Lugols( and probably won’t suspend properly).

Using different strengths

Unless you are making your own Lugols, the only thing you need to worry about is what strength % your Lugols is.

If we had two drops side by side, one drop of 2% and one drop of 4%. The drop of 2% contains 2.5mg of combined Iodine(i2) & Potassium Iodide. And the 4% drop has 5mg of total combined Iodine.

So both drops are still Lugols Iodine Solution, but one contains twice as much “Strength” as the other. This allows us to find a good strength, that works well for the amount of iodine we would like to consume.

I created to help ease a little confusion with iodine dosage amounts. Just plug-in the strength % of your Lugols and adjust the drops till you find your dose, or see how much of a dose you might get with X amount of drops.

Check out other types of iodine like SSKI and Nascent

Next – Super Saturated Potassium Iodide

Was this article helpful?
October 1, 2020

Leave a Reply