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Lugol's Solution (Lugol's Iodine)
Lugol's Solution is the original liquid iodine formula, first developed by French physician Jean Lugol in 1829. Lugol's Original's manufactures Lugol's Solution in the U.S.A. in six strengths, 2%, 5%, 7%, 10%, 15%, and 20%, and ships every order from Brooklyn, New York.
Every bottle is amber glass with a glass dropper, which protects the solution from light and lets you measure by the drop. No alcohol, no fillers, no artificial additives.
Lugol's Solution Strengths Compared
The percentage tells you how much iodine is in each drop. Only the concentration changes from one strength to the next.
| Strength | Often chosen by |
|---|---|
| 2% Lugol's Solution | First-time buyers who want fine control per drop |
| 5% Lugol's Solution | The classic formula and our most popular strength |
| 7% Lugol's Solution | A step up from 5% |
| 10% Lugol's Solution | Experienced users who want fewer drops |
| 15% Lugol's Solution | High-concentration, compact storage |
| 20% Lugol's Solution | Maximum concentration and long-term storage |
This is a strength comparison, not a serving recommendation. Always follow your product label and consult a healthcare provider.
Not sure which to pick? Read 2% vs. 5% Lugol's Solution: Which Strength Do You Need?
2oz or 4oz?
Every strength comes in a 2oz bottle (about a 30-day supply at a standard serving) and a 4oz bottle (about 60 days). The product is identical; the 4oz is the better value if you reorder regularly. See 2oz vs. 4oz Lugol's Solution.
How Lugol's Solution Is Used
Lugol's Solution has been used for nearly 200 years. As a dietary supplement, iodine supports normal thyroid function. Most people add drops to a glass of water or juice. Lugol's Solution is also well known as a laboratory reagent and starch indicator, and it is a staple of emergency-preparedness and long-term storage kits. For dilution and timing, see How to Take Lugol's Solution.
Lugol's Solution vs. Nascent Iodine vs. Liquid Iodine
All three are liquid iodine supplements in different formats. Nascent Iodine is a glycerin-based format some people prefer for its milder taste. For the full side-by-side, read the complete comparison guide.
Why Buy from Lugol's Original's
- We make it ourselves. We are an iodine manufacturer, not a reseller, and produce our Lugol's Solution in the U.S.A.
- Six strengths. Six concentrations from 2% to 20%, in 2oz and 4oz.
- Amber glass, glass dropper. Protects the solution and measures accurately.
- Published lab results. Certificates of Analysis for our iodine are posted on our COA page.
- Free shipping on orders over $49 and a 100% money-back guarantee.
Have a question about strengths, storage, or bulk orders? See our Iodine 101 FAQ or email info@lugolsnaturals.com.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
