Licorice also slows down the breakdown of adrenal hormones in your body, helping to maintain optimal levels. There is no licorice in licorice candies in the United States because of this. Another beneficial effect of the licorice is that it helps in the treatment of indigestion, and it is even as effective as the prescription heartburn medication Tagamet. Do not take licorice if you have high blood pressure, as too much licorice can cause excess adrenal function and worsen high blood pressure. You can safely take 200–400 mg a day of a licorice extract standardized to contain 5 percent glycyrrhizic acid.