Povidone Iodine Mouth Wash, Rinse, Gargle for COVlD-19 Dilute by adding 2-3 drops of the 10% Povidone Iodine into a full glass of water. Now it is dilute enough to use as a mouth rinse, or gargle. — Posted by jeffreydachmd.com ___ https://www.therecipes.info/iodine-gargle-recipe