J.Crow's® Lugol's Iodine Solution 2% is equivalent to USP standards or higher. This solution delivers 94% distilled water, 4% potassium iodide and 2% iodine. This iodine content is what makes Lugol's Solution so popular. Drops dispense vertically or horizontally. Each VERTICAL drop is approximately 3.00- 3.125 mg's of iodine/potassium iodide (approximately 1.250 mg iodine, 1.875 mg potassium iodide) and 2 drops is about 6.00-6.25 mg's of iodine/potassium iodide (approximately 2.5 mg iodine, 3.75 mg potassium iodide). For use as a talisman only. Keep away from children.