Lugol's Solution 20% Iodine Drops — 4oz Bottle, ~60-Day Supply

This is the 4oz format of our 20% Lugol's Solution: the same original 1829 formula — molecular iodine (I₂) and potassium iodide (KI) in purified water, nothing else — in a larger bottle that delivers approximately twice the supply of our standard 2oz size. At 20%, each drop delivers ten times the iodine of our 2% formula. This is the highest-concentration, largest-format option in the Lugols Originals lineup: the 4oz bottle at maximum strength, providing approximately a 60-day supply for experienced users who have established a 20% routine.

Why the 4oz Format?

The 4oz bottle contains the same two-ingredient Lugol's Solution as our 2oz — molecular iodine and potassium iodide in purified water, with no binders, fillers, or synthetic additives. At a standard serving, one 4oz bottle provides approximately 60 days of use. At 20%, you will use very few drops per serving, making the 4oz format an efficient choice for users who want an extended supply of the highest-concentration formula in the lineup. Every bottle is manufactured in the U.S.A. by Lugols Originals using high-purity ingredients.

What makes the 4oz format distinct:

✔ Size: 4oz — double the volume of our standard 2oz bottle
✔ Supply: Approximately 60-day supply at standard serving
✔ Concentration: 20% — the highest in the Lugols Originals lineup; 10x the iodine per drop vs. our 2% formula
✔ Formula: Molecular iodine (I₂) + potassium iodide (KI) in purified water — two ingredients, nothing else
✔ Packaging: Amber glass dropper bottle — no plastic contact with the solution
✔ Formulated without alcohol for a milder taste
✔ Origin: Made in the U.S.A. by one of the world’s largest dedicated iodine manufacturers

Who This Is For

Established 20% users who have confirmed their preferred serving size and want a two-month supply of the highest-concentration formula in the lineup
Functional health followers directed to 20% who want a larger supply of their specific concentration on hand
Bulk buyers who want the maximum-concentration, larger-format bottle in shelf-stable amber glass
Households with multiple users sharing a single bottle of 20% Lugol's Solution

New to 20% Lugol's Solution? Start with our 2oz bottle to confirm your preferred serving before committing to the larger format. Looking for a lower concentration in 4oz? See our 15% Lugol's Solution 4oz.

How to Use

Add the recommended number of drops to a glass of water, juice, or another beverage. Use the included glass dropper for consistent, precise measurement. At 20%, each drop is the most concentrated in the lineup — begin with fewer drops than you used at any lower concentration and adjust with care. Consult a qualified healthcare provider before use if you are pregnant, nursing, taking prescription medications, or have a known sensitivity to iodine.

Frequently Asked Questions

Is the formula the same as the 2oz version?

Yes — identical formula, larger bottle. The 4oz contains the same 20% Lugol's Solution: molecular iodine (I₂) and potassium iodide (KI) in purified water. The only difference is volume and supply duration.

How long does the 4oz bottle last?

At a standard serving, one 4oz bottle provides approximately a 60-day supply. Because 20% delivers the most iodine per drop of any formula in the lineup, you will use very few drops per serving. Exact duration depends on your daily serving size.

Should I start with the 4oz or the 2oz?

If you are new to 20% Lugol's Solution, start with the 2oz bottle to establish your preferred serving size before purchasing the larger format. The 4oz is best suited to users who already know how many drops they use daily at this concentration.

Is this product shelf-stable for long-term storage?

Lugol's Solution is chemically stable when stored in a cool, dark location away from direct light and heat. The amber glass dropper bottle preserves solution integrity over time.

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.

100% No-Risk Money Back Guarantee

Lugols Originals has manufactured over 100 iodine products and stands behind every one. If you are not completely satisfied for any reason, contact us for a full refund — no questions asked. Add to Cart and try it risk-free.

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Lugol's Solution 20% Iodine Drops 4oz | 60-Day Supply | Lugols Originals