Equivalent to USP or Higher 2 oz Dropper Bottle FREE DOMESTIC SHIPPING!  Calculating Number of MG’s of Iodine and Iodide per Drop of LUGOL’S 2%: Each VERTICAL “metric” drop (= 1/20 ml) is approximately 1.0 mg of iodine and 2.0 mg of potassium iodide. The Iodide portion of Potassium Iodide is about 75% so that is 1.5 mg
— Read on www.jcrowsllc.com/products/j-crows-lugols-solution-of-iodine-2-2-oz-twin-pack-2-bottles-24-98-12-49-ea-bottle-free-us-canada-shipping