I suggest that you use licorice root tea. I get it in bags, but you could get it in bulk by the pound, perhaps where you get the olive leaf? The tea bags have around 1.6 grams of licorice root, so a pound of it is good for almost 300 cups. I drink a cup or two of it at a time. I guess you could get an extract of it or swallow capsules, but the tea tastes so great, so why not drink the tea?