Dietary Supplement Deglycyrrhizinated Licorice Root Extract Protects Stomach Lining & Intestinal Wall Purity & Potency Guaranteed Deglycyrrhizinated Licorice (DGL) is a safe and effective licorice extract. It is specially processed to have glycyrrhizin removed to avoid potential side effects such as elevated blood pressure. DGL improves the integrity of the natural mucus lining of the stomach and intestinal wall. It stimulates the protective factors which guard against weaknesses in these linings. Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.